CN110120542B - High-energy-density lithium slurry battery and working method thereof - Google Patents
High-energy-density lithium slurry battery and working method thereof Download PDFInfo
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- CN110120542B CN110120542B CN201810119986.2A CN201810119986A CN110120542B CN 110120542 B CN110120542 B CN 110120542B CN 201810119986 A CN201810119986 A CN 201810119986A CN 110120542 B CN110120542 B CN 110120542B
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 48
- 239000002002 slurry Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 11
- 239000011267 electrode slurry Substances 0.000 claims abstract description 255
- 239000003792 electrolyte Substances 0.000 claims abstract description 136
- 239000002245 particle Substances 0.000 claims abstract description 127
- 239000006258 conductive agent Substances 0.000 claims abstract description 49
- 239000007787 solid Substances 0.000 claims abstract description 44
- 238000003860 storage Methods 0.000 claims description 80
- 238000002360 preparation method Methods 0.000 claims description 45
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 11
- -1 lithium hexafluorophosphate Chemical compound 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000006256 anode slurry Substances 0.000 claims description 8
- 239000006257 cathode slurry Substances 0.000 claims description 8
- 239000002003 electrode paste Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 6
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- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 150000002466 imines Chemical class 0.000 claims description 4
- 239000002608 ionic liquid Substances 0.000 claims description 4
- 239000011244 liquid electrolyte Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 125000001889 triflyl group Chemical group FC(F)(F)S(*)(=O)=O 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000003575 carbonaceous material Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- TYOCDPIZUIQUSO-UHFFFAOYSA-N 1-butyl-2,3-dimethyl-2h-imidazole Chemical compound CCCCN1C=CN(C)C1C TYOCDPIZUIQUSO-UHFFFAOYSA-N 0.000 claims description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- QTHKJEYUQSLYTH-UHFFFAOYSA-N [Co]=O.[Ni].[Li] Chemical compound [Co]=O.[Ni].[Li] QTHKJEYUQSLYTH-UHFFFAOYSA-N 0.000 claims description 2
- FDLZQPXZHIFURF-UHFFFAOYSA-N [O-2].[Ti+4].[Li+] Chemical compound [O-2].[Ti+4].[Li+] FDLZQPXZHIFURF-UHFFFAOYSA-N 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 claims description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 2
- 239000002041 carbon nanotube Substances 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 229910021389 graphene Inorganic materials 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 229910000625 lithium cobalt oxide Inorganic materials 0.000 claims description 2
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims description 2
- JVZGJLAPJLXQKT-UHFFFAOYSA-N lithium iron(2+) manganese(2+) nickel(2+) oxygen(2-) Chemical compound [O-2].[Fe+2].[Mn+2].[Li+].[Ni+2] JVZGJLAPJLXQKT-UHFFFAOYSA-N 0.000 claims description 2
- 229910002102 lithium manganese oxide Inorganic materials 0.000 claims description 2
- FRMOHNDAXZZWQI-UHFFFAOYSA-N lithium manganese(2+) nickel(2+) oxygen(2-) Chemical compound [O-2].[Mn+2].[Ni+2].[Li+] FRMOHNDAXZZWQI-UHFFFAOYSA-N 0.000 claims description 2
- ILXAVRFGLBYNEJ-UHFFFAOYSA-K lithium;manganese(2+);phosphate Chemical compound [Li+].[Mn+2].[O-]P([O-])([O-])=O ILXAVRFGLBYNEJ-UHFFFAOYSA-K 0.000 claims description 2
- BFZPBUKRYWOWDV-UHFFFAOYSA-N lithium;oxido(oxo)cobalt Chemical compound [Li+].[O-][Co]=O BFZPBUKRYWOWDV-UHFFFAOYSA-N 0.000 claims description 2
- VLXXBCXTUVRROQ-UHFFFAOYSA-N lithium;oxido-oxo-(oxomanganiooxy)manganese Chemical compound [Li+].[O-][Mn](=O)O[Mn]=O VLXXBCXTUVRROQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000003760 magnetic stirring Methods 0.000 claims description 2
- 238000010297 mechanical methods and process Methods 0.000 claims description 2
- 238000010907 mechanical stirring Methods 0.000 claims description 2
- 239000002923 metal particle Substances 0.000 claims description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 230000009969 flowable effect Effects 0.000 claims 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 claims 1
- 239000003273 ketjen black Substances 0.000 claims 1
- VGYDTVNNDKLMHX-UHFFFAOYSA-N lithium;manganese;nickel;oxocobalt Chemical compound [Li].[Mn].[Ni].[Co]=O VGYDTVNNDKLMHX-UHFFFAOYSA-N 0.000 claims 1
- 230000035699 permeability Effects 0.000 claims 1
- 239000007772 electrode material Substances 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 25
- 239000010410 layer Substances 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000002482 conductive additive Substances 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- DEUISMFZZMAAOJ-UHFFFAOYSA-N lithium dihydrogen borate oxalic acid Chemical compound B([O-])(O)O.C(C(=O)O)(=O)O.C(C(=O)O)(=O)O.[Li+] DEUISMFZZMAAOJ-UHFFFAOYSA-N 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Manufacturing & Machinery (AREA)
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- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention provides a high-energy-density lithium slurry battery and a working mode thereof, wherein electrolyte, electrode active material and conductive agent particles are respectively positioned in two device containers, the electrolyte is mainly transported during transportation, the electrolyte, the electrode active material and the conductive agent particles are uniformly mixed and prepared in another device close to a battery reactor to obtain electrode slurry with better fluidity, then the electrode slurry with better fluidity enters the battery reactor, and the redundant electrolyte can flow out through a porous filter screen in an electrode cavity, so that the solid content of the electrode slurry left in the electrode cavity is higher, and the energy density of the battery is improved. The high-energy-density lithium slurry battery can solve the problem of transportation loss caused by high viscosity of electrode slurry, and can improve the solid particle content and stability of electrode suspension in a battery reactor, so that a battery system has high energy density and good stability.
Description
Technical Field
The invention relates to the technical field of lithium slurry batteries, in particular to a structure and a working mode of a high-energy-density lithium slurry battery.
Background
The lithium slurry battery is a novel battery technology and is divided into two structural forms, namely a lithium slurry battery with an external circulation system and a lithium slurry battery without external circulation. The lithium slurry battery takes electrode slurry as a main material for realizing an electrochemical function, and the electrode slurry is in a solid-liquid two-phase mixed state formed by dispersing electrode active particles and a conductive additive in electrolyte. The lithium slurry battery with the external circulating system is also called a lithium ion flow battery, can be applied to the field of large energy storage matched with new energy power generation, mainly comprises a battery reactor, a liquid storage container and a transportation pipeline, electrode slurry continuously or intermittently flows between the liquid storage container and the battery reactor, electrochemical reaction occurs in the battery reactor, and the lithium slurry battery has the characteristic that the energy density and the power density of the battery can be independently designed. The lithium slurry battery without external circulation does not need to consider the fluidity of electrode slurry, so that the lithium slurry battery has higher solid particle content and energy density and can be applied to the fields of small electric vehicles or household energy storage.
Chinese patent 201210144560.5 discloses a pump-less lithium ion flow battery, which comprises a battery subsystem, a liquid preparation tank, a liquid collection tank and a transportation tank, wherein the electrode slurry in the transportation tank is transported by mechanical force or gravity and air pressure. In order to improve the energy density and the conductive performance of the lithium paste battery, the electrode paste generally contains electrode active particles and conductive additives as much as possible, but when the content of the solid particles is too high, the viscosity of the electrode paste increases, the fluidity decreases, and the energy loss during transportation increases. In addition, when the solid particles are dispersed in the electrolyte, a downward settling movement tendency may occur, and when the solid particle content is high or the flow is slow, problems such as unstable state of the electrode slurry, insufficient reaction or blockage of the reaction chamber may occur due to the settling of the particles.
Disclosure of Invention
In order to solve the problems, the invention provides a lithium slurry battery with high energy density and a working mode, wherein liquid electrolyte is mixed with solid electrode active particles and conductive agent particles to form electrode slurry with better fluidity, and the electrode slurry flows between a battery reactor and a storage container; the excessive electrolyte flows out through the battery reactor and a porous filter screen arranged on each storage container, and circularly flows among the storage container, the electrode slurry configuration container and the battery reactor, and solid electrode active particles and conductive agent particles are remained in the battery reactor, so that the solid content of the electrode slurry and the energy density of the battery are improved. The high-energy-density lithium slurry battery can solve the problem of transportation loss caused by high viscosity of electrode slurry, and can improve the solid particle content and stability of the electrode slurry in a battery reactor, so that a battery system has high energy density and good stability.
The technical scheme provided by the invention is as follows:
the utility model provides a high energy density lithium thick liquids battery, including electrolyte storage device, electrode thick liquids prepare the device, electrode thick liquids storage device, drive arrangement and battery reactor, electrolyte storage device, electrode thick liquids prepare the device, electrode thick liquids storage device, pass through the pipe connection between drive arrangement and the battery reactor respectively, be equipped with valve and metering device on every connecting tube, be equipped with porous filter screen in the electrode cavity of battery reactor, be arranged in separating excessive liquid electrolyte and solid-state electrode active particle and the conducting agent granule in the electrode thick liquids, thereby obtain the electrode thick liquids that solid content and energy density are higher. Wherein, the high solid content means that the solid content in the electrode slurry is between 30% and 80%, and preferably between 40% and 60%.
In the invention, the electrode slurry comprises solid electrode active particles, conductive agent particles and liquid electrolyte, and the solid content refers to the mass ratio of the electrode active particles and the conductive agent particles in the electrode slurry.
The electrode slurry preparation device comprises a positive electrode slurry preparation device and a negative electrode slurry preparation device, and in order to obtain uniformly mixed electrode slurry, an electrode slurry stirring device is arranged in the electrode slurry preparation device; or, an electrode slurry vibration device is arranged on the surface of the electrode slurry configuration device; or, an electrode slurry stirring device is arranged in the electrode slurry configuration device, and an electrode slurry vibration device is arranged on the surface of the electrode slurry configuration device, so that the electrode slurry can be uniformly mixed, wherein the electrode slurry stirring device comprises a mechanical stirring paddle and/or a magnetic stirring rotor, and the electrode slurry vibration device comprises an ultrasonic vibrator and/or an electromagnetic vibrator.
The electrode slurry preparation device is also provided with: an injection port for injecting electrode active particles and conductive agent particles; the electrolyte port is used for flowing in and flowing out of electrolyte; and the electrode slurry port is used for the inflow and outflow of the electrode slurry. And a porous screen for separating the electrolyte and the electrode active particles and the conductive agent particles in the electrode slurry. The electrolyte port is communicated with the electrolyte storage device through a pipeline, and the electrode slurry port is connected with an electrode cavity of the battery reactor through a pipeline.
When the electrode slurry is prepared, calculating and weighing electrode active particles and conductive agent particles which need to be added according to the capacity of the battery, and injecting the electrode active particles and the conductive agent particles into the electrode slurry preparation device through a filling port of the electrode slurry preparation device; under the action of the driving device, electrolyte in the electrolyte storage device enters the electrode slurry preparation device through a pipeline and an electrolyte port of the electrode slurry preparation device, and is mixed with electrode active particles and conductive agent particles in the device to form electrode slurry with good fluidity, namely the electrode slurry with 5-30% of solid content. Injection amount m of electrolyte1Controlled by valves and metering devices on the piping. In order to fully and uniformly mix the electrode slurry, the electrode slurry stirring device and/or the electrode slurry vibration device can be started, and the uniformly mixed electrode slurry enters the battery reactor through the electrode slurry port and the pipeline under the action of the driving device and the self weight of the electrode slurry.
The battery reactor comprises an anode cavity, a cathode cavity and an isolating layer arranged between the anode cavity and the cathode cavity, wherein an anode current collector and a porous filter screen are arranged in the anode cavity, and a cathode current collector and a porous filter screen are arranged in the cathode cavity. The two ends of the positive electrode cavity are respectively provided with a positive electrode slurry inlet and a positive electrode slurry outlet, and the positive electrode slurry inlet is communicated with an electrode slurry port of the positive electrode slurry preparation device through a pipeline; and a negative electrode slurry inlet and a negative electrode slurry outlet are respectively arranged at two ends of the negative electrode cavity, and the negative electrode slurry inlet is communicated with an electrode slurry port of the negative electrode slurry preparation device through a pipeline.
And an electrolyte port is also formed in one side of the electrode cavity of the battery reactor, the electrolyte port is communicated with an electrolyte storage device through a pipeline, and redundant electrolyte in the electrode cavity flows out of the electrolyte port through a porous filter screen and enters the electrolyte storage device.
Preferably, when the electrode slurry is prepared, the electrolyte injected into the electrode slurry preparation device is in an excessive state, so that the viscosity of the electrode slurry is reduced, the fluidity of the electrode slurry is improved, and the driving energy consumption is reduced. Electrode slurry with good fluidity enters an electrode cavity of the battery reactor, and redundant electrolyte can flow out to an electrolyte storage device through a porous filter screen in the electrode cavity, so that the electrolyteOutflow amount m of2The amount of electrolyte remained in the electrode cavity is (m) controlled by a valve and a metering device on the pipeline1-m2) The relative proportions of the electrode active particles and the conductive agent particles can be increased to form an electrode slurry having a high solid content and a high energy density.
When electrode paste with particularly high solid content and energy density is required to be obtained, a driving device or a suction device can be arranged to be communicated with a pipeline to continuously discharge the redundant electrolyte in the electrode paste out of the electrode paste under the condition that the electrolyte cannot flow out in a sufficient amount only by the natural flow force of the electrolyte.
Electrode thick liquids storage device includes anodal thick liquids storage device and negative pole thick liquids storage device, and electrode thick liquids storage device is equipped with: the electrode slurry port is respectively communicated with a positive electrode slurry outlet and a negative electrode slurry outlet of the battery reactor through pipelines; a porous screen for separating the electrolyte from the electrode active particles and the conductive agent particles in the electrode slurry; the electrolyte port is communicated with the electrolyte storage device through a pipeline, and electrolyte of the electrode slurry in the electrode slurry storage device enters the electrolyte storage device through the porous filter screen.
A plurality of independent electrode slurry storage devices can be arranged in parallel according to requirements, are respectively communicated with the electrode cavity of the battery reactor and are used for independently storing the electrode slurry after multiple charge/discharge reactions.
In the invention, the electrode slurry comprises anode slurry and cathode slurry, the anode slurry is a mixture of anode active particles, conductive agent particles and electrolyte, and the anode slurry is positioned in an anode cavity. The particle size of the positive active particles is 0.1-100 μm, and the positive active particles are one or a mixture of more of lithium-containing lithium iron phosphate, lithium manganese phosphate, doped lithium manganese oxide, lithium cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt oxide, lithium nickel manganese iron oxide, other lithium-containing metal oxides and the like.
The negative electrode slurry is a mixture of negative electrode active particles, conductive agent particles and electrolyte, and is positioned in the negative electrode cavity. The particle size of the negative active particles is 0.1-100 μm, and the negative active particles are one or a mixture of more of aluminum-based alloy, silicon-based alloy, tin-based alloy, lithium titanium oxide, carbon material and the like capable of reversibly intercalating lithium.
The particle diameter of the conductive agent particles is 0.1-10 μm, and the mass ratio of the conductive agent particles in the electrode slurry is 0.1-5%. The conductive agent material is one or a mixture of more of conductive carbon black, carbon fiber, carbon nano tube, graphene, metal particles and the like.
Or, the electrode slurry comprises composite electrode active particles and electrolyte, and the composite electrode active particles are high-conductivity composite electrode active particles formed by compositing the electrode active particles and conductive agent particles through a mechanical method or a chemical method.
The electrolyte is a solution prepared by dissolving lithium hexafluorophosphate or lithium bis (oxalate) borate in an organic solvent or an ionic liquid, wherein the organic solvent comprises one or more of dimethyl carbonate, diethyl carbonate, ethylene carbonate, propylene carbonate and the like, and the ionic liquid comprises one or more of N-methyl-N-propyl pyrrole-bis (trifluoromethyl sulfonyl) imine, 1-methyl-4-butyl pyridine-bis (trifluoromethyl sulfonyl) imine, 1, 2-dimethyl-3-N-butyl imidazole, 1-methyl-3-ethyl imidazole tetrafluoroboric acid, 1-methyl-3-butyl imidazole hexafluorophosphoric acid and the like.
In the invention, the solid content in the electrode slurry with good fluidity is 5-30%, preferably 10-20%, and the solid content in the electrode slurry with high solid content is 30-80%, preferably 40-60%.
The porous filter screen can resist electrolyte corrosion and comprises one or more of a porous metal screen, a porous inorganic fabric, high-permeability honeycomb ceramics, metal or nonmetal porous foam, a porous carbon felt and the like, the porous filter screen has a one-layer or multi-layer structure, the pore diameter is smaller than the minimum particle diameter of electrode active particles and conductive agent particles, or the pore diameter of the porous filter screen is smaller than the minimum particle diameter of composite electrode active particles, and the pore diameter of the porous filter screen is 0.005-0.01 mu m. The porous filter screen is used for solid-liquid separation of the electrode slurry and can allow electrolyte to pass through, but electrode active particles and conductive agent particles cannot pass through.
The positive current collector is positioned in the positive electrode cavity and is in contact with the positive electrode slurry, and the negative current collector is positioned in the negative electrode cavity and is in contact with the negative electrode slurry. The positive current collector and the negative current collector can resist electrolyte corrosion and have electronic conductivity, and comprise one of conductive metal, carbon fiber conductive cloth or metal wire and organic fiber wire mixed conductive cloth, wherein the conductive metal can be a metal plate, a metal foil or a metal net and is made of one or more of aluminum, copper, stainless steel, nickel, titanium, silver, tin-plated copper, nickel-plated copper, silver-plated copper and the like. In the present invention, the positive electrode current collector is preferably aluminum, and the negative electrode current collector is preferably copper. Further, the surface of the positive electrode current collector or the negative electrode current collector may be coated with a conductive carbon material coating.
The isolating layer is an isolating layer through which lithium ions can pass but electrons cannot pass, and is made of one of electronically non-conductive polymer materials such as polyethylene, polypropylene and polyvinylidene fluoride, or one of electronically non-conductive microporous inorganic non-metallic materials such as glass fiber non-woven fabrics, synthetic fiber non-woven fabrics and ceramic fiber paper, or the isolating layer is made of a gel polymer electrolyte composite material formed by compounding an electronically non-conductive polymer matrix, a liquid organic plasticizer and lithium salt. The separator functions to block the passage of the positive electrode active particles and the negative electrode active particles while allowing lithium ions to pass therethrough.
Compared with the traditional Chinese patent 201210144560.5, the high-energy-density lithium slurry battery provided by the invention has the advantages that the driving device mainly drives the electrolyte to circularly flow or the diluted electrode slurry with good fluidity to circularly flow, so that the driving energy consumption is reduced, and the cost is saved. Compared with the traditional lithium flow battery, the battery has the advantages that the redundant electrolyte in the electrode cavity of the battery reactor is discharged, so that the electrode slurry with high solid content is obtained, and the energy density of the battery can be improved.
Particularly, according to the high-energy-density lithium slurry battery provided by the invention, when the electrode slurry enters the electrode cavity and releases redundant electrolyte according to the requirement until the electrode slurry reaches the required energy density, an external circulation pipeline system of the battery reactor can be cancelled, and the battery reactor is singly used together with an external battery shell and an electrode terminal to form the lithium slurry battery without external circulation, and the lithium slurry battery is mainly used for a power battery of an electric automobile. Compared with the traditional lithium slurry battery manufacturing mode, the lithium slurry battery obtained by the mode has the advantages that the energy density and solid content of the electrode slurry are high, the battery manufacturing operation is simple, the slurry injection mode and the site are flexible, and the maintainability degree is high.
The invention also provides a working mode of the high-energy-density lithium slurry battery, which comprises the following steps:
a) feeding: calculating the mass of the required electrode active particles and the required conductive agent particles according to the requirement of the battery capacity, and injecting the electrode active particles and the conductive agent particles into the electrode slurry preparation device through a filling port of the electrode slurry preparation device;
b) electrolyte in the electrolyte storage device enters the electrode slurry preparation device through an electrolyte port of the electrode slurry preparation device under the driving of the driving device, and the electrolyte, the electrode active particles and the conductive agent particles are prepared into electrode slurry with the solid content of 5-30%;
c) the electrode slurry prepared in the step b) enters an electrode cavity of the battery reactor under the driving of a driving device, wherein the anode slurry enters an anode cavity, and the cathode slurry enters a cathode cavity; according to the requirement of the solid content of the electrode slurry, by controlling a valve and a metering device on a pipeline, redundant electrolyte in the electrode slurry flows out from an electrolyte port of an electrode cavity through a porous filter screen under the action of gravity and/or driving force and enters an electrolyte storage device, electrode active particles, conductive agent particles and the residual electrolyte are remained in the electrode cavity to generate sedimentation and accumulation of solid particles, and the electrode slurry with the solid content of 30-80% is formed;
d) the positive electrode slurry in the positive electrode cavity and the negative electrode slurry in the negative electrode cavity are subjected to repeated charge-discharge reaction through the isolating layers, or the positive electrode slurry in the positive electrode cavity and the negative electrode slurry in the negative electrode cavity are subjected to single sufficient charge reaction through the isolating layers, or the positive electrode slurry in the positive electrode cavity and the negative electrode slurry in the negative electrode cavity are subjected to single sufficient discharge reaction through the isolating layers.
In the steps a) to d), the outflow and inflow of the electrolyte and the electrode slurry can be controlled by a valve and a metering device on the pipeline.
Discharging the electrode slurry in the battery reactor if necessary after the charging/discharging in the step d), wherein the electrolyte in the electrolyte storage device can enter the electrode cavity again through a pipeline and an electrolyte port of the electrode cavity, diluting the electrode slurry with higher solid content to form electrode slurry with good fluidity, and the electrode slurry with good fluidity enters the electrode slurry storage device under the driving of the driving device; a plurality of independent electrode slurry storage devices can be arranged in parallel according to requirements, are respectively communicated with the electrode cavity of the battery reactor and are used for independently storing the electrode slurry after multiple charge/discharge reactions.
According to the requirement, the electrolyte in the electrode slurry storage device can enter the electrolyte storage device through the porous filter screen and the electrolyte port of the electrode slurry storage device.
According to the invention, when multiple times of full charge reaction are required, the steps from c) to d) can be repeated, and the charged electrode slurry respectively enters a single or a plurality of electrode slurry storage devices; when the electrode slurry storage device needs to fully discharge and react, the electrode slurry which is subjected to the charging process in the electrode slurry storage device reversely enters an electrode cavity of the battery reactor under the action of the driving device, and electrolyte in the electrolyte storage device can enter the electrode slurry storage device through the porous filter screen and the pipeline to dilute the electrode slurry and improve the flowability of the electrode slurry.
The invention has the advantages that:
1) according to the invention, the electrolyte, the electrode active particles and the conductive agent particles are subjected to solid-liquid separation, and the driving device is used for driving the electrolyte and the relatively diluted electrode slurry with good fluidity, so that the driving energy consumption is reduced;
2) by arranging the porous filter screen in the device and arranging the valve and the metering device on the pipeline, the electrolyte in the electrode slurry can be flexibly injected and flowed out, so that the energy density and the solid content of the battery can be conveniently adjusted;
3) the electrode slurry with high solid content in the electrode cavity can ensure that solid active particles and conductive agent particles are fully contacted, reduce contact internal resistance and improve conductivity and rate capability.
Drawings
Fig. 1 is a schematic structural view of a high energy density lithium paste battery according to the present invention;
fig. 2 is a schematic structural diagram of a battery reactor according to a first embodiment of the present invention, wherein fig. 2(a) is a schematic perspective view of the battery reactor, and fig. 2(b) is a schematic plan view of the battery reactor;
fig. 3 is a schematic structural diagram of a negative electrode cavity according to a first embodiment of the invention, in which fig. 3(a) is a schematic perspective view of the negative electrode cavity, and fig. 3(b) is a schematic plan view of the negative electrode cavity;
fig. 4 is a schematic structural diagram of a negative electrode cavity according to a second embodiment of the present invention, in which fig. 4(a) is a schematic perspective view of the negative electrode cavity, and fig. 4(b) is a schematic plan view of the negative electrode cavity.
List of reference numerals
1-Positive electrode Chamber
101-positive electrode slurry inlet
102-positive electrode slurry outlet
2-isolation layer
201-positive pole ear
202-negative pole tab
203-positive electrode current collector
3-negative pole cavity
301-negative pole slurry inlet
302-cathode slurry outlet
304-filtration pores
305-porous plug
306-flow guiding cavity
4-positive electrode slurry preparation device
4' -negative pole thick liquids configuration device
401. 401' -injection opening
103. 303, 402 ', 601' -electrolyte port
404. 404 ', 602' -electrode slurry port
5. 5' -electrolyte storage device
6-storage device for anode slurry
6' -negative pole thick liquids storage device
7-valve device
8-measuring device
9-pipeline
10-porous filter screen
Detailed Description
The invention will be further explained by embodiments in conjunction with the drawings.
The invention discloses a high-energy density lithium slurry battery, which comprises electrolyte storage devices 5 and 5', an electrode slurry preparation device, an electrode slurry storage device, a driving device and a battery reactor as shown in figure 1, wherein the electrolyte storage device, the electrode slurry preparation device, the electrode slurry storage device, the driving device and the battery reactor are respectively connected through pipelines 9, each connecting pipeline is provided with a valve 7 and a metering device 8, and porous filter screens 10 are arranged in cavities of the electrode slurry preparation device, the electrode slurry storage device and the battery reactor and are used for separating electrode active particles and conductive agent particles in electrolyte and electrode slurry.
The electrode slurry preparation device comprises a positive electrode slurry preparation device 4 and a negative electrode slurry preparation device 4', and the electrode slurry preparation device is also provided with: injection ports 401, 401' for injecting electrode active particles and conductive agent particles; electrolyte ports 402, 402' for inflow and outflow of electrolyte; electrode slurry ports 404, 404' are used for inflow and outflow of the electrode slurry. The electrolyte ports 402, 402 ' communicate with the electrolyte reservoirs 5, 5 ' via a conduit 9, and the electrode slurry ports 404, 404 ' are connected to the electrode chambers of the battery reactor via a conduit 9.
When the electrode slurry is prepared, electrode active particles and conductive agent particles which need to be added are calculated and weighed according to the capacity of a battery, the electrode active particles and the conductive agent particles are injected into the electrode slurry preparation device through the injection ports 401 and 401 'of the electrode slurry preparation device, electrolyte in the electrolyte storage devices 5 and 5' enters the electrode slurry preparation device through the pipelines and the electrolyte ports of the electrode slurry preparation device under the action of the driving device and is mixed with the electrode active particles and the conductive agent particles in the device to form the electrode slurry, and the injection amount of the electrolyte is controlled through the metering device 8 on the pipelines. In order to mix the electrode slurry sufficiently and uniformly, the electrode slurry stirring device and/or the electrode slurry vibrating device can be started. The uniformly mixed electrode slurry enters the battery reactor through the electrode slurry ports 404 and 404' and the pipeline under the driving of the driving device and the self weight of the electrode slurry to carry out charge and discharge reactions.
The battery reactor comprises a positive electrode cavity 1, a negative electrode cavity 3 and an isolating layer 2 arranged between the positive electrode cavity and the negative electrode cavity, wherein a positive current collector and a porous filter screen are arranged in the positive electrode cavity 1, and a negative current collector and a porous filter screen are arranged in the negative electrode cavity. A positive electrode slurry inlet 101 and a positive electrode slurry outlet 102 are respectively arranged at two ends of the positive electrode cavity 1, and the positive electrode slurry inlet 101 is communicated with an electrode slurry port 404 of the positive electrode slurry preparation device 4 through a pipeline 9; the two ends of the negative electrode cavity 3 are respectively provided with a negative electrode slurry inlet 301 and a negative electrode slurry outlet 302, and the negative electrode slurry inlet 301 is communicated with an electrode slurry port 404 'of the negative electrode slurry preparation device 4' through a pipeline.
Electrode thick liquids storage device includes anodal thick liquids storage device 6 and negative pole thick liquids storage device 6', electrode thick liquids storage device is equipped with: the electrode slurry inlets 602 and 602' are respectively communicated with the anode slurry outlet 102 and the cathode slurry outlet 302 of the battery reactor through pipelines; a porous screen for separating the electrolyte and the electrode active particles and the conductive agent particles in the electrode slurry; the electrolyte ports 601 and 601' are communicated with an electrolyte storage device through a pipeline, and electrolyte of electrode slurry in the electrode slurry storage device enters the electrolyte storage device through a porous filter screen 10.
Example one
This embodiment provides a battery reactor of the lithium slurry battery with high energy density, which has several positive electrode cavities and several negative electrode cavities stacked in an intersecting manner, a positive electrode tab 201 is led out from a positive electrode current collector 203, and a negative electrode tab 202 is led out from a negative electrode current collector, as shown in fig. 2.
Fig. 3 is a schematic structural diagram of the negative electrode chamber in the present embodiment, wherein fig. 3(b) is a cross-sectional view of fig. 3 (a). The positive electrode cavity and the negative electrode cavity are formed by a 'return' type insulating sealing frame with a certain thickness, one side inner wall of the insulating sealing frame is provided with 1 or more filter holes 304, and porous filter screens are filled in the filter holes 304, wherein the porous filter screens adopt porous filter plugs 305 for separating electrolyte, electrode active particles and conductive agent particles in electrode slurry. The redundant electrolyte in the cathode slurry in the cathode cavity is filtered by the porous filter plug 305, enters the diversion cavity 306 and finally flows out from the electrolyte port 303. Through earlier stage calculation, the outflow of electrolyte is controlled by controlling a metering device and a valve on a pipeline so as to achieve the purpose of controlling the solid content of the electrode slurry in the electrode cavity.
In this embodiment, the porous filter plug is made of an electrolyte corrosion resistant porous inorganic fabric with a pore size of 0.008 μm.
Example two
This embodiment provides an alternative arrangement of the perforated screen as shown in figure 4. The inner wall of one side of the insulating and sealing frame is provided with 1 or more filter holes 304, and unlike the first embodiment, the porous filter screen 10 is integrally disposed at one side of the filter holes 304. Redundant electrolyte in the cathode slurry in the cathode cavity is filtered by the porous filter screen 10, enters the diversion cavity 306 and finally flows out from the electrolyte port. Through earlier stage calculation, the outflow of electrolyte is controlled by controlling a metering device and a valve on a pipeline so as to achieve the purpose of controlling the solid content of the electrode slurry in the electrode cavity.
In this embodiment, the porous filter screen adopts two stacked porous carbon felts resistant to electrolyte corrosion, and the pore diameter of the single-layer porous carbon felt is 0.01 μm.
The specific embodiments of the present invention are not intended to be limiting of the invention. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (13)
1. A high energy density lithium slurry battery is characterized in that the high energy density lithium slurry battery comprises an electrolyte storage device, an electrode slurry preparation device, an electrode slurry storage device, a driving device and a battery reactor, wherein the battery reactor is respectively communicated with the electrolyte storage device, the electrode slurry preparation device and the electrode slurry storage device through pipelines, the electrode slurry preparation device is communicated with the electrolyte storage device through a pipeline, the electrode slurry storage device is communicated with the electrolyte storage device through a pipeline, each connected pipeline is provided with a valve and a metering device, electrode slurry with the solid content of 5% -30% is configured in the electrode slurry preparation device, a porous filter screen is arranged in an electrode cavity of the battery reactor and used for separating excessive liquid electrolyte, solid electrode active particles and conductive agent particles in the electrode slurry, so as to obtain electrode slurry with solid content of 30-80% in the electrode cavity; the battery reactor electrode cavity one side still is equipped with the electrolyte mouth, the electrolyte mouth pass through the pipeline with electrolyte storage device intercommunication, unnecessary electrolyte in the electrode cavity passes through the porous filter screen in the electrode cavity is followed electrolyte mouth flows out and enters electrolyte storage device.
2. The high energy density lithium slurry battery according to claim 1, wherein the electrode slurry preparation device includes a positive electrode slurry preparation device and a negative electrode slurry preparation device, and an electrode slurry stirring device is provided in the electrode slurry preparation device; or an electrode slurry vibration device is arranged on the surface of the electrode slurry configuration device; or, an electrode slurry stirring device is arranged in the electrode slurry configuration device, and an electrode slurry vibration device is arranged on the surface of the electrode slurry configuration device, so that the electrode slurry can be uniformly mixed, wherein the electrode slurry stirring device comprises a mechanical stirring paddle and/or a magnetic stirring rotor, and the electrode slurry vibration device comprises an ultrasonic vibrator and/or an electromagnetic vibrator.
3. The high energy density lithium paste battery according to claim 2, wherein said electrode paste dispensing device is further provided with: an injection port for injecting electrode active particles and conductive agent particles; the electrolyte port is used for flowing in and flowing out of electrolyte; the electrode slurry port is used for the inflow and outflow of the electrode slurry; the porous filter screen is used for separating electrolyte, electrode active particles and conductive agent particles in the electrode slurry, wherein the electrolyte port is communicated with the electrolyte storage device through a pipeline, and the electrode slurry port is connected with an electrode cavity of the battery reactor through a pipeline.
4. The high energy density lithium slurry battery of claim 3, wherein the battery reactor comprises a positive electrode cavity and a negative electrode cavity, and an isolation layer disposed between the positive electrode cavity and the negative electrode cavity, wherein a positive electrode current collector and a porous filter screen are disposed in the positive electrode cavity, and a negative electrode current collector and a porous filter screen are disposed in the negative electrode cavity; a positive electrode slurry inlet and a positive electrode slurry outlet are respectively arranged at two ends of the positive electrode cavity, and the positive electrode slurry inlet is communicated with an electrode slurry port of the positive electrode slurry preparation device through a pipeline; and the two ends of the negative electrode cavity are respectively provided with a negative electrode slurry inlet and a negative electrode slurry outlet, and the negative electrode slurry inlet is communicated with an electrode slurry port of the negative electrode slurry preparation device through a pipeline.
5. The high energy density lithium slurry battery according to claim 4, wherein the electrode slurry storage device comprises a positive electrode slurry storage device and a negative electrode slurry storage device, the electrode slurry storage device being provided with: the electrode slurry port is respectively communicated with the anode slurry outlet and the cathode slurry outlet of the battery reactor through pipelines; a porous screen for separating the electrolyte and the electrode active particles and the conductive agent particles in the electrode slurry; the electrolyte port is communicated with the electrolyte storage device through a pipeline, and electrolyte of electrode slurry in the electrode slurry storage device passes through a porous filter screen in the electrode slurry storage device and enters the electrolyte storage device.
6. The high energy density lithium slurry battery according to claim 5, wherein a plurality of independent electrode slurry storage devices are arranged in parallel according to requirements, and are respectively communicated with the electrode cavities of the battery reactor for independent storage of the electrode slurry after multiple charge/discharge reactions.
7. The high energy density lithium slurry battery of claim 1 wherein the electrode slurry comprises a positive electrode slurry and a negative electrode slurry, the positive electrode slurry being a mixture of positive electrode active particles, conductive agent particles, and an electrolyte, the positive electrode slurry being located within a positive electrode cavity; the negative electrode slurry is a mixture of negative electrode active particles, conductive agent particles and electrolyte, and is positioned in the negative electrode cavity;
or, the electrode slurry comprises composite electrode active particles and electrolyte, wherein the composite electrode active particles are high-conductivity composite electrode active particles formed by compounding the electrode active particles and conductive agent particles through a mechanical method or a chemical method;
the solid content in the electrode slurry with good fluidity is 5-30%, and the solid content in the electrode slurry with high solid content is 30-80%.
8. The high energy density lithium slurry battery according to claim 7, wherein the positive active particles have a particle size of 0.1 μm to 100 μm, and are one or a mixture of lithium-containing lithium iron phosphate, lithium manganese phosphate, doped lithium manganese oxide, lithium cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt oxide, lithium nickel manganese cobalt oxide, and lithium nickel manganese iron oxide;
the particle size of the negative active particles is 0.1-100 mu m, and the negative active particles are one or a mixture of more of aluminum-based alloy, silicon-based alloy, tin-based alloy, lithium titanium oxide and carbon material which can be reversibly embedded with lithium;
the particle size of the conductive agent particles is 0.1-10 mu m, the mass ratio of the conductive agent particles in the electrode slurry is 0.1-5%, and the conductive agent is one or a mixture of more of conductive carbon black, carbon fibers, carbon nanotubes, Ketjen black, graphene and metal particles;
the electrolyte is a solution prepared by dissolving lithium hexafluorophosphate or lithium bis (oxalato) borate in an organic solvent or an ionic liquid; the organic solvent comprises one or more of dimethyl carbonate, diethyl carbonate, ethylene carbonate and propylene carbonate, and the ionic liquid is one or more of N-methyl-N-propyl pyrrole-bis (trifluoromethyl sulfonyl) imine, 1-methyl-4-butyl pyridine-bis (trifluoromethyl sulfonyl) imine, 1, 2-dimethyl-3-N-butyl imidazole, 1-methyl-3-ethyl imidazole tetrafluoroboric acid and 1-methyl-3-butyl imidazole hexafluorophosphate.
9. The high energy density lithium slurry battery according to claim 1, wherein the porous screen is capable of resisting electrolyte corrosion, the material of the porous screen is one or more of a porous metal mesh, a porous inorganic fabric, a high permeability honeycomb ceramic, a metallic or non-metallic porous foam, and a porous carbon felt, the porous screen has one or more layers of structure, the pore size of the porous screen is smaller than the minimum particle size of the electrode active particles and the conductive agent particles, or the pore size of the porous screen is smaller than the minimum particle size of the composite electrode active particles, and the pore size of the porous screen is 0.005 μm to 0.01 μm.
10. A method of operating a high energy density lithium paste battery as claimed in any one of claims 1 to 9, comprising the steps of:
a) feeding: calculating the mass of the required electrode active particles and the required conductive agent particles according to the requirement of the battery capacity, and injecting the electrode active particles and the conductive agent particles into the electrode slurry preparation device through a filling port of the electrode slurry preparation device;
b) electrolyte in the electrolyte storage device enters the electrode slurry preparation device through an electrolyte port of the electrode slurry preparation device under the driving of the driving device, and the electrolyte, the electrode active particles and the conductive agent particles are prepared into electrode slurry with the solid content of 5-30%;
c) the electrode slurry prepared in the step b) enters an electrode cavity of the battery reactor under the driving of a driving device, wherein the anode slurry enters an anode cavity, and the cathode slurry enters a cathode cavity; according to the requirement of the solid content of the electrode slurry, by controlling a valve and a metering device on a pipeline, redundant electrolyte in the electrode slurry flows out from an electrolyte port of an electrode cavity through a porous filter screen under the action of gravity and/or driving force and enters an electrolyte storage device, electrode active particles, conductive agent particles and the residual electrolyte are remained in the electrode cavity to generate sedimentation and accumulation of solid particles, and the electrode slurry with the solid content of 30-80% is formed;
d) the positive electrode slurry in the positive electrode cavity and the negative electrode slurry in the negative electrode cavity are subjected to repeated charge-discharge reaction through the isolating layers, or the positive electrode slurry in the positive electrode cavity and the negative electrode slurry in the negative electrode cavity are subjected to single sufficient charge reaction through the isolating layers, or the positive electrode slurry in the positive electrode cavity and the negative electrode slurry in the negative electrode cavity are subjected to single sufficient discharge reaction through the isolating layers.
11. The method for operating a high energy density lithium paste battery according to claim 10, wherein the outflow and inflow of the electrolyte and the electrode paste in the steps a) to d) are controlled by a valve and a metering device on the pipe.
12. The method of claim 10, wherein the electrode slurry in the battery reactor is discharged after the charging/discharging operation in step d), the electrolyte in the electrolyte storage device can be re-introduced into the electrode cavity through the pipeline and the electrolyte port of the electrode cavity, the electrode slurry with higher solid content is diluted to form a flowable electrode slurry, and the flowable electrode slurry enters the electrode slurry storage device under the driving of the driving device.
13. The method of operating a high energy density lithium paste battery according to claim 10, wherein the steps c) to d) are repeated for a plurality of times of full charge reactions, and the charged electrode pastes are respectively fed into a single or a plurality of electrode paste storage devices; when the electrode slurry storage device is fully discharged, the electrode slurry which is charged in the electrode slurry storage device reversely enters the electrode cavity of the battery reactor under the action of the driving device.
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