CN108584945A - A kind of method that shallot and waste prepare porous charcoal - Google Patents
A kind of method that shallot and waste prepare porous charcoal Download PDFInfo
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- CN108584945A CN108584945A CN201810696309.7A CN201810696309A CN108584945A CN 108584945 A CN108584945 A CN 108584945A CN 201810696309 A CN201810696309 A CN 201810696309A CN 108584945 A CN108584945 A CN 108584945A
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- shallot
- porous charcoal
- temperature
- charcoal
- pickling
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- 239000003610 charcoal Substances 0.000 title claims abstract description 82
- 244000291564 Allium cepa Species 0.000 title claims abstract description 66
- 235000010167 Allium cepa var aggregatum Nutrition 0.000 title claims abstract description 63
- 239000002699 waste material Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000005554 pickling Methods 0.000 claims abstract description 23
- 235000002732 Allium cepa var. cepa Nutrition 0.000 claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 239000012190 activator Substances 0.000 claims abstract description 10
- 239000012298 atmosphere Substances 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 39
- 238000001994 activation Methods 0.000 claims description 32
- 230000004913 activation Effects 0.000 claims description 27
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 15
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Substances [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 239000003960 organic solvent Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000008236 heating water Substances 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000003763 carbonization Methods 0.000 claims description 5
- 238000007598 dipping method Methods 0.000 claims description 5
- 239000000284 extract Substances 0.000 claims description 5
- 239000001307 helium Substances 0.000 claims description 5
- 229910052734 helium Inorganic materials 0.000 claims description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- 235000019441 ethanol Nutrition 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 239000011232 storage material Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims 1
- 238000002360 preparation method Methods 0.000 abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 26
- 241000234282 Allium Species 0.000 description 18
- 239000007772 electrode material Substances 0.000 description 15
- 239000011148 porous material Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 13
- 239000003990 capacitor Substances 0.000 description 12
- 229910052799 carbon Inorganic materials 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000003575 carbonaceous material Substances 0.000 description 7
- 239000005539 carbonized material Substances 0.000 description 6
- 238000010792 warming Methods 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 5
- 239000002250 absorbent Substances 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 239000002956 ash Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910000027 potassium carbonate Inorganic materials 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 241000370738 Chlorion Species 0.000 description 3
- 229920002488 Hemicellulose Polymers 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- GAMYVSCDDLXAQW-AOIWZFSPSA-N Thermopsosid Natural products O(C)c1c(O)ccc(C=2Oc3c(c(O)cc(O[C@H]4[C@H](O)[C@@H](O)[C@H](O)[C@H](CO)O4)c3)C(=O)C=2)c1 GAMYVSCDDLXAQW-AOIWZFSPSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 235000013399 edible fruits Nutrition 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 229930003944 flavone Natural products 0.000 description 3
- 150000002212 flavone derivatives Chemical class 0.000 description 3
- 235000011949 flavones Nutrition 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- VHBFFQKBGNRLFZ-UHFFFAOYSA-N vitamin p Natural products O1C2=CC=CC=C2C(=O)C=C1C1=CC=CC=C1 VHBFFQKBGNRLFZ-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 235000017060 Arachis glabrata Nutrition 0.000 description 2
- 244000105624 Arachis hypogaea Species 0.000 description 2
- 235000010777 Arachis hypogaea Nutrition 0.000 description 2
- 235000018262 Arachis monticola Nutrition 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 2
- 241000723346 Cinnamomum camphora Species 0.000 description 2
- 240000003133 Elaeis guineensis Species 0.000 description 2
- 235000001950 Elaeis guineensis Nutrition 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 2
- 239000012620 biological material Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000002484 cyclic voltammetry Methods 0.000 description 2
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- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000020232 peanut Nutrition 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
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- 238000004438 BET method Methods 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
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- 241000234280 Liliaceae Species 0.000 description 1
- 244000302661 Phyllostachys pubescens Species 0.000 description 1
- 235000003570 Phyllostachys pubescens Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004964 aerogel Substances 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011849 charcoal-based material Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002322 conducting polymer Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000005518 electrochemistry Effects 0.000 description 1
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- 235000013305 food Nutrition 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
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- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/26—Electrodes characterised by their structure, e.g. multi-layered, porosity or surface features
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/34—Carbon-based characterised by carbonisation or activation of carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
- H01G11/86—Processes for the manufacture of hybrid or EDL capacitors, or components thereof specially adapted for electrodes
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/14—Pore volume
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/16—Pore diameter
- C01P2006/17—Pore diameter distribution
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- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
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- 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
- Y02E60/13—Energy storage using capacitors
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Organic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
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- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The present invention relates to a kind of methods that shallot and its waste prepare porous charcoal, are related to the preparing technical field of porous charcoal.The method includes：(1) it by shallot raw material stoving and crushes, is subsequently placed in heating furnace, be passed through protective gas, heating charing；(2) after to step (1) products therefrom pickling, then it is washed till neutrality, dried；(3) step (2) products therefrom mixed with activator, impregnated, be subsequently placed in heating furnace the heat-activated under protective atmosphere；(4) to step (3) products therefrom pickling, drying to get green onion base porous charcoal.The present invention is using shallot and its waste as raw material, the porous charcoal ash content of preparation is low, wellability is good, be assembled into two electrode system double electric layers supercapacitors have high specific capacitance, small equivalent series resistance, high charge-discharge efficiencies and low time constant, especially under high magnification charge and discharge have excellent high current charge-discharge ability and energy density.
Description
Technical field
The present invention relates to the preparing technical fields of porous charcoal, and in particular to a kind of ultracapacitor porous carbon electrode material and
Preparation method.
Background technology
Ultracapacitor work is a kind of novel energy storage apparatus between traditional capacitor and rechargeable battery, has both high energy
Metric density high power density, has extended cycle life, the advantage that charge/discharge rates are fast, temperature window is big and high rate performance is excellent, is believing
The multiple fields such as breath technology, electric vehicle, aerospace and science and techniques of defence have application prospect of crucial importance and wide.
Currently, electrode material for super capacitor includes mainly following several classes：Transition metal oxide, conducting polymer and charcoal
Based material.In electrode material for super capacitor, earliest application, using most extensive, current industrialization technology it is most ripe be each
The Carbon Materials of kind various kinds, such as activated carbon, carbon nanotube, graphene, charcoal-aero gel.Commercialization ultracapacitor uses at present
Electrode active material is absorbent charcoal material.Absorbent charcoal material has excellent physicochemical properties, including：High conductivity, height
Specific surface area, excellent chemistry and electrochemical stability, relatively low cost etc..Absorbent charcoal material can be utilized by electrolyte
Effective ratio area (electro-chemical activity surface) size be influence its chemical property key factor.In addition pore size,
The type in hole and the functional group of pore structure charcoal material surface or heteroatom also have a significant impact its electrochemical capacitor performance.
As long as in general, theoretically the substance containing charcoal may serve to prepare activated carbon, therefore can be used for preparing activity
The raw material types very abundant of charcoal.It is several big that raw material according to source can be divided mainly into plant, mineral substance, other wastes etc.
Class.Raw material workable for plant include：Timber, coconut husk, peanut shell, moso bamboo, various stalks etc., plant raw material majority are
Agriculture and forestry organic waste material, content of ashes is low, cheap, is particularly easy to form flourishing microcellular structure after activation, has higher machine
Tool intensity and good absorption property.Plant is the preferred material for preparing activated carbon at present.
Farma et al. exists《Preparation of highly porous binderless activated carbon
electrodes from fibres of oil palm empty fruit bunches for application in
supercapacitors》(DOI:10.1016/j.biortech.2013.01. 044) in a text in oil palm fruit empty fruit cluster
The self-adhesion carbon granules that fiber is processed to is presoma, and specific surface area 1704m is obtained using KOH activation methods2·g-1Porous charcoal,
Its specific capacitance reaches 150Fg-1。
104803383 A of patent application CN disclose a kind of side preparing activated carbon for super capacitors using camphortree leaf
Method, it is obtained through washing, drying, acidleach, charing, pickling, drying and processing using camphortree leaf as raw material.Activated carbon ratio obtained
Surface area reaches 963.70-1424.19m2/ g, under the discharge current of 300mA/g, specific capacity reaches 95-120F/g.
102417179 A of patent application CN, which are disclosed, uses peanut shell for raw material, carries out activation process with KOH, gained is lived
The specific surface area of property Carbon Materials reaches 1227m2/ g shows preferable stability as capacitor electrode material.
However, biomass used by the above-mentioned prior art exists as electrode material for super capacitor presoma is prepared
The specific surface area of absorbent charcoal material that is poor using the activation effect of activator, preparing is smaller, is difficult to hole knot to activated carbon
The problems such as structure and specific surface area are adjusted, therefore, it is necessary to develop a kind of new ultracapacitor porous carbon electrode material and
Preparation method.
Invention content
For the above-mentioned prior art the problem of, the present invention is intended to provide a kind of shallot and its waste prepare it is porous
The method of charcoal.Compared to traditional biological material, the present invention uses shallot and its waste as raw material, since shallot contains
Abundant mineral matter element while can effectively reducing the use of activator, increases the specific surface area of porous charcoal to obtain more
Big charge storage space.Porous charcoal ash content prepared by the present invention is low, and wellability is good, be assembled into two electrode system electric double layers are super
Grade capacitor has higher specific capacitance, smaller equivalent series resistance, higher efficiency for charge-discharge and low time normal
Number, charge and discharge are with excellent high current charge-discharge ability and energy density especially under high magnification.
A kind of method that an object of the present disclosure is to provide shallot and its waste prepares porous charcoal.
The porous charcoal that second purpose of the invention is to provide a kind of shallot and its prepared by waste.
The porous charcoal pole that third purpose of the present invention is to provide a kind of shallot for ultracapacitor and its prepared by waste
Material.
4th purpose of the invention is to provide a kind of ultracapacitor of the porous charcoal prepared comprising the present invention.
5th purpose of the invention is to provide even shallot and its waste prepares method, shallot and its waste system of porous charcoal
The application of porous charcoal pole material, ultracapacitor prepared by standby porous charcoal, shallot and its waste.
For achieving the above object, specifically, the invention discloses following technical proposals：
First, a kind of method that the present invention provides shallot and its waste prepares porous charcoal, includes the following steps：
(1) it by shallot raw material stoving and crushes, is subsequently placed in heating furnace, be passed through protective gas, heating charing；
(2) after to step (1) products therefrom pickling, then it is washed till neutrality, dried；
(3) step (2) products therefrom mixed with activator, impregnated, is subsequently placed in heating furnace under protective atmosphere
Heat-activated；
(4) to step (3) products therefrom pickling, drying to get green onion base porous charcoal.
In the present invention, the shallot raw material includes allium and its waste, preferably shallot and its waste.
Further, further include the pretreatment to shallot raw material, specially in step (1)：After taking shallot raw material to clean,
Shallot raw material is extracted with organic solvent water-bath heating, is dried again after extraction, pulverization process.
The pretreated reason of shallot raw material is：Shallot raw material (especially Bulbus Allii Fistulosi) can be extracted by pretreatment
In extract, to further increase hemicellulose and C content accounting in shallot raw material, C content, hemicellulose level accounting
It is higher, higher specific surface area more is obtained useful as the shallot raw material charcoal for preparing porous charcoal, more preferably pore structure, has
Better chemical property；Moreover, after pretreatment, the products such as general flavone extracted from shallot principle have high medicine
With value, the industrial chain added value of shallot raw material can be significantly widened, realizes that high-qualityization of shallot raw material utilizes.
Preferably, in the pretreatment, the solid-liquid ratio of shallot raw material and organic solvent is 1g：8-15ml, further preferably
For 1g： 10mL.
Preferably, in the pretreatment, organic solvent includes but not limited to the one or more of of the solution such as ethyl alcohol, acetone
Combination.
Preferably, in the pretreatment, a concentration of 80-100% (quality) of organic solvent.
Preferably, in the pretreatment, bath temperature is 80-100 DEG C, and the heating water bath time is 8h.
In step (1), the protective gas includes one or more of the inert gases such as nitrogen, helium, argon gas group
It closes, preferably nitrogen.
In step (1), the protective gas flow is 0.1-2L/min, preferably 1.5L/min.
In step (1), the heating rate of the heating carbonization is 5-100 DEG C/min, preferably 5 DEG C/min.
In step (1), the carbonization temperature is 400-800 DEG C, time 2h, preferably 600 DEG C.
In step (2), acid that the pickling uses include but not limited to one kind in sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid or
Several combinations, preferably hydrochloric acid.
In step (2), a concentration of 0.1-6M, preferably 3M of the acid that the pickling uses.
In step (2), the pickling and the temperature for being washed till neutrality are 80 DEG C.
In step (3), the chemical activating agent includes but not limited to KOH, NaOH, K2CO3、H3PO4, ZnCl one kind or
It is a variety of, preferably KOH.
In step (3), the impregnating ratio (i.e. the mass ratio of product and chemical activating agent) of the product and chemical activating agent is
1：(1-5), preferably 1：4.
In step (3), the dipping temperature is 80-100 DEG C, dip time 1-4h, preferably 80 DEG C, 2h.
In step (3), the protective gas includes one or more of the inert gases such as nitrogen, helium, argon gas group
It closes, preferably nitrogen.
In step (3), the protective gas flow is 0.1-2L/min, preferably 1.5L/min.
In step (3), the activation process is divided into low-temperature activation and high-temperature activation, wherein low-temperature activation temperature is 300-
400 DEG C, time 30-50min, preferably 350 DEG C, 45min；High-temperature activation temperature is 700-900 DEG C, time 60-140min,
Preferably 800 DEG C, 120min.Low temperature pre-activate carbonization stage provides necessary K for the high-temperature activation stage2CO3And K2O is simple substance
The generation of K plays important premise effect.During high-temperature activation, on the one hand by generating K2CO3And the carbon consumed makes hole
Development；On the other hand, K simple substance is generated in the high-temperature activation stage, when temperature is more than metallic potassium boiling point (762 DEG C), potassium steam meeting
Different carbon-coatings is diffused into, new pore structure is formed, gaseous metallic potassium is walked between the synusia of crystallite, and strutting fragrant synusia makes
It is distorted or deforms, and creates new hole.
In step (4), acid that the pickling uses include but not limited to one kind in sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid or
Several combinations, preferably hydrochloric acid.
In step (4), a concentration of 0.1-6M, preferably 0.1M of the acid that the pickling uses.
In step (4), the pickling and the temperature for being washed till neutrality are 80 DEG C.
Secondly, the porous charcoal that the present invention provides a kind of shallot and its prepared by waste, the porous charcoal specific surface area exist
2179m2/ g or more, Kong Rong are in 1.3cm3/ g or more, aperture is within 2.4nm.The specific surface area of superelevation can provide more work
Property site can increase substantially the energy density of ultracapacitor to adsorption charge.
Again, the porous charcoal pole material that the present invention provides a kind of shallot for ultracapacitor and its prepared by waste,
The porous charcoal that porous charcoal pole material is prepared by the present invention is made.
Thirdly, the present invention provides a kind of ultracapacitor, and the charcoal pole material of the ultracapacitor is prepared by the present invention
Porous charcoal be made.
Finally, it is prepared the invention discloses method, shallot and its waste of shallot and its waste preparation porous charcoal
Porous charcoal, the porous charcoal pole material of shallot and its waste preparation, ultracapacitor are in traffic and transport field, energy storage material
Using.
Green onion is Liliaceae allium, and perennial herb is the important seasoning food materials in China, more than China extensive kind
It plants, yield is very big, and the four seasons can harvest.Meanwhile shallot has a high medical value, the normal quilt of the dregs of a decoction after production extraction medicinal ingredient
It is discarded, cause a large amount of green onion waste to be not used.The present invention is had found by studying：Green onion and allium not only have natural
Pore structure, it is often more important that can effectively replace activator containing abundant minerals, play good activation, subtract
The use of few chemical activating agent；Largely absorption, assimilation, storage, ventilation, transfer function are undertaken simultaneously as containing in Bulbus Allii Fistulosi
Parenchymal tissue (nutritive issue), the pore structure in Bulbus Allii Fistulosi is relatively more flourishing, and extract and half fiber in parenchymal tissue
It is higher to tie up cellulose content, therefore C content is also relatively higher；For this purpose, the present invention is extracted by being pre-processed to green onion material in Bulbus Allii Fistulosi
Extract, further increase hemicellulose and C content accounting in Bulbus Allii Fistulosi, and flourishing pore structure, abundant minerals are high
The C element of content accounting can make the Supercapacitor carbon that green onion prepares as presoma have higher specific surface area, more preferably hole
Gap structure, better chemical property, high-performance super capacitor can both be obtained by preparing porous charcoal with shallot and its waste
Electrode material, but high-qualityization that waste may be implemented utilizes, and expands industrial chain added value.
Compared with prior art, the advantageous effect that the present invention obtains is：
1, the present invention has natural hole using shallot and its waste as raw material compared to traditional biological material
Structure, and contain the use that abundant mineral matter element can effectively reduce activator, increase specific surface area to obtain bigger
Charge storage space.
2, the present invention not only improves the percentage composition of wherein C element by the pretreatment to shallot raw material, and can be
More multi-pore structure is obtained before activation so that porous charcoal prepared by the later stage has higher specific surface area, more reasonably hole knot
Structure obtains a kind of more ideal porous carbon material for supercapacitor；Contain in the extracting solution obtained after pre-processing simultaneously
General flavone etc. has high medical value, can significantly widen the industrial chain added value of shallot raw material, realizes shallot raw material
High-qualityization utilizes.
3, the present invention carries out pickling to the product after charing, and the ash content accumulated in material after being carbonized with removing makes activator
It is fully reacted with material surface, improves the utilization ratio of activator, reduce production cost, step is simple, it is easy to accomplish is big
Large-scale production utilizes.
4, the present invention effectively removes the impurity introduced in activation process simultaneously using rational purifying and heat treatment process
Content of ashes is reduced, porosity is improved, optimizes pore-creating effect, further promotes the cycle performance of activated carbon.
5, preparation method is simple, at low cost, clean environment firendly by the present invention, is more easily achieved industrialization.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the SEM figures that sample powder is made in 1 step 1 of embodiment.
Fig. 2 is the SEM figures of porous charcoal made from embodiment 1.
Fig. 3 is the N of porous charcoal made from embodiment 12Adsorption/desorption figure.
Fig. 4 is porous charcoal mesoporous pore size distribution map made from embodiment 1.
Fig. 5 is constant current charge-discharge curve of the porous carbon electrode material made from embodiment 1 under 1A/g current densities.
Fig. 6 is porous carbon electrode material made from embodiment 1 in 10mV/s, 20mV/s, 50mV/s, 100mV/s, 200mV/
Cyclic voltammetry curve under the sweep speed of s.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, biomass used by the prior art is as preparing electrode material for super capacitor
Presoma, the specific surface area that there is the absorbent charcoal material that the activation effect using activator is poor, prepares is smaller, is difficult to activity
The problems such as pore structure and specific surface area of charcoal are adjusted, therefore, the present invention proposes a kind of shallot and its prepared by waste
The method of porous charcoal, the present invention is described further with reference to the accompanying drawings and detailed description.
It should be noted that：Unless otherwise specified, heretofore described unit " M " expression " mol/L ".
Embodiment 1
A kind of method that shallot and its waste prepare porous charcoal, includes the following steps：
Step 1 presses solid-liquid ratio 1g after cleaning shallot chopping：10ml is placed in the ethanol solution that mass concentration is 80%,
It dries and crushes after heating water bath 8h at 80 DEG C；
Sample powder obtained by step 1 is placed in tube type resistance furnace, in nitrogen atmosphere (flow 1.5L/ by step 2
Min 600 DEG C are heated under), heating rate is 5 DEG C/min, keeps the temperature 2h, is cooled to room temperature, and green onion carbonized material is made；
Step 3, first by green onion carbonized material 3M hydrochloric acid solutions pickling at 80 DEG C obtained by step 2, then with 80 DEG C of deionizations
It is washed to neutrality, is dried for standby；
Step 4 weighs step 3 products therefrom 4g, according to charcoal alkali than 1：4 weigh KOH solids 16g and are configured to be saturated molten
Saturation KOH solution is put it into air dry oven with step 3 products therefrom and impregnates 2h with 80 DEG C of high temperature by liquid after mixing,
Material after must impregnating.
Step 5, by material after the dipping in step 4 be put into Muffle furnace in a nitrogen atmosphere (flow 1.5L/min) into
Row activation is warming up to 350 DEG C of progress low-temperature activations from room temperature with 5 DEG C/min of heating rate, 45min is kept the temperature, then with identical
Heating rate is warming up to 800 DEG C of progress high-temperature activations, keeps the temperature 2h, waits for that temperature is cooled to room temperature taking-up to get activated material；
Step 6 first washs the activated material in step 5 at 80 DEG C to neutrality with 0.1M hydrochloric acid solutions, then with 80 DEG C
Deionized water is rinsed repeatedly to chlorion and is all removed, and products therefrom is dried to get green onion base porous charcoal.
Embodiment 2
A kind of method that shallot and its waste prepare porous charcoal, with embodiment 1, difference lies in：Charcoal alkali ratio is 1：3.
Embodiment 3
A kind of method that shallot and its waste prepare porous charcoal, with embodiment 1, difference lies in：In step 1, only need by
Shallot dries and crushes after cleaning, and is pre-processed without heating water bath.
Embodiment 4
A kind of method that shallot and its waste prepare porous charcoal, with embodiment 1, difference lies in：In step 1, raw material is adopted
With shallot waste, the waste is extracts the remaining dregs of a decoction of general flavone using Bulbus Allii Fistulosi.
Embodiment 5
A kind of method that shallot and its waste prepare porous charcoal, includes the following steps：
Step 1 presses solid-liquid ratio 1g after cleaning shallot chopping：8ml is placed in the acetone soln that mass concentration is 100%,
It dries and crushes after heating water bath 8h at 100 DEG C；
Sample powder obtained by step 1 is placed in tube type resistance furnace, in argon gas atmosphere (flow 0.1L/ by step 2
Min 800 DEG C are heated under), heating rate is 100 DEG C/min, keeps the temperature 2h, is cooled to room temperature, and green onion carbonized material is made；
Step 3, first by green onion carbonized material 0.1M sulfuric acid solutions pickling at 80 DEG C obtained by step 2, then with 80 DEG C go from
Son is washed to neutrality, is dried for standby；
Step 4 weighs step 3 products therefrom 4g, according to charcoal alkali than 1：5 weigh K2CO3Solid 20g simultaneously is configured to be saturated
Solution will be saturated K2CO3Solution is put it into air dry oven with step 3 products therefrom and is soaked with 100 DEG C of high temperature after mixing
Stain 1h, material after must impregnating.
Step 5, by material after the dipping in step 4 be put into Muffle furnace under an argon atmosphere (flow 0.1L/min) into
Row activation is warming up to 400 DEG C of progress low-temperature activations from room temperature with 5 DEG C/min of heating rate, 30min is kept the temperature, then with identical
Heating rate is warming up to 700 DEG C of progress high-temperature activations, keeps the temperature 140min, waits for that temperature is cooled to room temperature taking-up to get activated material；
Activated material in step 5 is first washed at 80 DEG C to neutrality with 6M sulfuric acid solutions, then is gone with 80 DEG C by step 6
Ionized water is rinsed repeatedly to chlorion and is all removed, and products therefrom is dried to get green onion base porous charcoal.
Embodiment 6
A kind of method that shallot and its waste prepare porous charcoal, includes the following steps：
Step 1 presses solid-liquid ratio 1g after cleaning shallot chopping：15ml is placed in the ethanol solution that mass concentration is 90%,
It dries and crushes after heating water bath 8h at 90 DEG C；
Sample powder obtained by step 1 is placed in tube type resistance furnace, at nitrogen atmosphere (flow 2L/min) by step 2
Under be heated to 400 DEG C, heating rate is 10 DEG C/min, keeps the temperature 2h, is cooled to room temperature, and green onion carbonized material is made；
Step 3, first by green onion carbonized material 6M hydrofluoric acid solutions pickling at 80 DEG C obtained by step 2, then with 80 DEG C go from
Son is washed to neutrality, is dried for standby；
Step 4 weighs step 3 products therefrom 4g, according to charcoal alkali than 1：1 weighs H3PO4Solid 4g simultaneously is configured to be saturated molten
Liquid will be saturated H3PO4Solution is put it into air dry oven with step 3 products therefrom and is impregnated with 90 DEG C of high temperature after mixing
4h, material after must impregnating.
Material after dipping in step 4 is put into Muffle furnace (flow 2L/min) under helium atmosphere and carried out by step 5
Activation is warming up to 300 DEG C of progress low-temperature activations from room temperature with 5 DEG C/min of heating rate, 50min is kept the temperature, then with identical liter
Warm rate is warming up to 900 DEG C of progress high-temperature activations, keeps the temperature 60min, waits for that temperature is cooled to room temperature taking-up to get activated material；
Activated material in step 5 is first washed at 80 DEG C to neutrality with 3M salpeter solutions, then is gone with 80 DEG C by step 6
Ionized water is rinsed repeatedly to chlorion and is all removed, and products therefrom is dried to get green onion base porous charcoal.
Performance test：
Specific surface area, Kong Rong, the average pore size to the embodiment 1-4 porous charcoals prepared are calculated using BET method, as a result such as table
Shown in 1.
The porous charcoal prepared with embodiment 1-4 presses 8 with electrically conductive graphite, polytetrafluoroethylene (PTFE)：1：What 1 mass ratio was mixed with
Electrode for super capacitor material, constant current charge-discharge test is carried out using the KOH of 6M as electrolyte, and test current density is 1
The specific capacitance value of A/g, 10A/g, the results are shown in Table 2.
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Specific surface area/m2/g | 2855 | 2776 | 2691 | 2179 |
| Kong Rong/cm3/g | 1.7 | 1.6 | 1.6 | 1.3 |
| Average pore size/nm | 2.4 | 2.2 | 2.3 | 2.1 |
Table 2
As can be seen from Table 1：Prepared porous carbon material specific surface area is in 2179m in the embodiment of the present invention2/ g with
On, reach as high as 2855m2/g；Kong Rong is in 1.3cm3/ g or more；Average pore size concentrates on 2.4nm or less.Its specific surface area is far high
Porous carbon material in existing literature and patent.
From Table 2, it can be seen that porous carbon material prepared in the embodiment of the present invention compares electricity under 1A/g current densities
Appearance reaches 278.10F/g or more, reaches as high as 381.51F/g, under the high current density of 10A/g, can still reach
The specific capacitance of 278.98F/g has good high rate performance.Compared to existing porous carbon electrode material, the present invention provides one
Kind chemical property is more excellent, specific capacitance and the more good porous carbon electrode material of high rate performance.
It will be seen from figure 1 that after the pre-treatment step in step 1, there is irregular hole and split in sample surfaces
Seam, contributes to the diffusion and infiltration of KOH in activation process.
Figure it is seen that porous carbon surface made from embodiment 1 is carved wherein having by KOH there are a large amount of pore structure
Losing into has the hole of the elongated crack formula formed due to by high temperature action close to circular hole, also melts and penetrates through and formed random
Hole then, hole is flourishing, well-formed.
From figure 3, it can be seen that the adsorption isothermal curve that porous charcoal is made in embodiment 1 has apparent hysteresis loop, belong to typical
IV type thermoisopleth, show the sign that porous charcoal contains mesoporous pore structure, illustrate during preparation, in addition to micropore give birth to
At mesoporous is also developed, and the appearance of mesoporous makes isothermal shape that corresponding change have occurred.And thermoisopleth is with opposite
The raising of pressure, N2 adsorbances are in always increased trend, when relative pressure is higher, still not up to saturation absorption, and adsorbance
Continuation slowly increases, and the phenomenon that platform does not occur, illustrates to contain a certain number of mesoporous in sample.
From fig. 4, it can be seen that pore-size distribution almost concentrates within 4nm, and, hole high in the voids content of 2nm or so
After diameter is more than 2nm, with the increase in aperture, voids content is reduced rapidly.The pore-size distribution that porous charcoal is made is relatively narrow, aperture point
Cloth is relatively uniform.
From fig. 5, it can be seen that constant current charge-discharge curve of the porous charcoal made from embodiment 1 under the current density of 1A/g
For well-symmetric isosceles triangle, illustrate that it has good electrochemical stability and invertibity.
As can be seen from Figure 6 it can be seen from the figure that under the sweep speed of 10~200mV/s, all cyclic voltammetrics are bent
Line is well-symbolized, and porous carbon material shows quasi- rectangular characteristic, occurs without redox peaks, this illustrated capacitor is almost
It is mainly electric double layer charge transfer reaction not have the presence of fake capacitance, electrode reaction, and electrode material has typical electrochemistry electricity
Container feature.With the gradual increase of sweep speed, the response current of material gradually increases, but the shape of curve is almost kept not
Become.Even if under the rate that exposes thoroughly of 200mV/s, cyclic voltammetry curve remains to keep good quasi- rectangular characteristic, shows fabulous
Symmetry.Therefore electrode material has smaller equivalent series resistance and quick Ion response ability, illustrates the hole of material
Road structure be conducive to electrolyte ion material internal quick diffusion transport, to make material show higher capacitive character
Energy.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for those skilled in the art
For member, the application can have various modifications and variations.Any modification made by within the spirit and principles of this application,
Equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. a kind of method that shallot and its waste prepare porous charcoal, it is characterised in that：Include the following steps：
(1) it by shallot raw material stoving and crushes, is subsequently placed in heating furnace, be passed through protective gas, heating charing；
(2) after to step (1) products therefrom pickling, then it is washed till neutrality, dried；
(3) step (2) products therefrom mixed with activator, impregnated, be subsequently placed in heating furnace and heated under protective atmosphere
Activation；
(4) to step (3) products therefrom pickling, drying to get green onion base porous charcoal.
2. the method that shallot as described in claim 1 and its waste prepare porous charcoal, it is characterised in that：In step (1), institute
It includes the combination of one or more of inert gases such as nitrogen, helium, argon gas, preferably nitrogen to state protective gas；
Or, in step (1), the protective gas flow is 0.1-2L/min, preferably 1.5L/min；
Or, in step (1), the heating rate of the heating carbonization is 5-100 DEG C/min, preferably 5 DEG C/min；
Or, in step (1), the carbonization temperature is 400-800 DEG C, time 2h, preferably 600 DEG C.
3. the method that shallot as described in claim 1 and its waste prepare porous charcoal, it is characterised in that：In step (2), institute
The acid for stating pickling use includes the combination of one or more of sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, preferably hydrochloric acid；
Or, in step (2), a concentration of 0.1-6M, preferably 3M of the acid that the pickling uses；
Or, in step (2), the pickling and the temperature for being washed till neutrality are 80 DEG C.
4. the method that shallot as described in claim 1 and its waste prepare porous charcoal, it is characterised in that：In step (3), institute
It includes KOH, NaOH, K to state chemical activating agent2CO3、H3PO4, ZnCl one or more, preferably KOH；
Or, in step (3), the impregnating ratio of the product and chemical activating agent is 1：(1-5), preferably 1：4；
Or, in step (3), the dipping temperature is 80-100 DEG C, dip time 1-4h, preferably 80 DEG C, 2h；
Or, in step (3), the protective gas includes one or more of the inert gases such as nitrogen, helium, argon gas group
It closes, preferably nitrogen；
Or, in step (3), the protective gas flow is 0.1-2L/min, preferably 1.5L/min；
Or, in step (3), the activation process is divided into low-temperature activation and high-temperature activation, wherein low-temperature activation temperature is 300-
400 DEG C, time 30-50min, preferably 350 DEG C, 45min；High-temperature activation temperature is 700-900 DEG C, time 60-140min,
Preferably 800 DEG C, 120min.
5. the method that shallot as described in claim 1 and its waste prepare porous charcoal, it is characterised in that：In step (4), institute
The acid for stating pickling use includes but not limited to the combination of one or more of sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, preferably salt
Acid；
Or, in step (4), a concentration of 0.1-6M, preferably 0.1M of the acid that the pickling uses；
Or, in step (4), the pickling and the temperature for being washed till neutrality are 80 DEG C.
6. the method that shallot as described in any one in claim 1-5 and its waste prepare porous charcoal, it is characterised in that：Step
(1) further include the pretreatment to shallot raw material, specially in：After taking shallot raw material to clean, heated to big with organic solvent water-bath
Green onion raw material extracts, and is dried again after extraction, pulverization process；
Preferably, in the pretreatment, the solid-liquid ratio of shallot raw material and organic solvent is 1g：8-15ml, further preferably 1g：
10mL；
Or, in the pretreatment, organic solvent includes but not limited to one or more of combinations of the solution such as ethyl alcohol, acetone；
Or, in the pretreatment, a concentration of 80-100% (quality) of organic solvent；
Or, in the pretreatment, bath temperature is 80-100 DEG C, and the heating water bath time is 8h.
7. porous charcoal prepared by method as claimed in any one of claims 1 to 6, it is characterised in that：The porous charcoal specific surface area
In 2179m2/ g or more, Kong Rong are in 1.3cm3/ g or more, aperture is within 2.4nm.
8. a kind of porous charcoal pole material prepared for the shallot of ultracapacitor and its waste, it is characterised in that：It is described more
Hole charcoal pole material is porous described in porous charcoal and/or claim 7 prepared by claim 1-6 any one of them methods
Charcoal.
9. a kind of ultracapacitor, it is characterised in that：The charcoal pole material of the ultracapacitor is according to any one of claims 8 porous
Charcoal pole material.
10. porous charcoal as claimed in claim 7 and/or porous charcoal pole as claimed in claim 8 material and/or as right is wanted
Ask application of the ultracapacitor in traffic and transport field, energy storage material described in 9.
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| CN112047338A (en) * | 2020-10-21 | 2020-12-08 | 南京正森环保科技有限公司 | Method for preparing wood activated carbon with ultralow phosphoric acid consumption |
| CN112723343A (en) * | 2020-12-30 | 2021-04-30 | 安徽工程大学 | Method for directly preparing high-quality graphene from biomass |
| CN115385333A (en) * | 2022-08-24 | 2022-11-25 | 齐鲁工业大学 | Potato seedling-based activated carbon and preparation method and application thereof |
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