CN1790781A - Lithium-ferrous disulfide disposable button cell and its preparing method - Google Patents
Lithium-ferrous disulfide disposable button cell and its preparing method Download PDFInfo
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- CN1790781A CN1790781A CN200510045551.0A CN200510045551A CN1790781A CN 1790781 A CN1790781 A CN 1790781A CN 200510045551 A CN200510045551 A CN 200510045551A CN 1790781 A CN1790781 A CN 1790781A
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- lithium
- negative
- button
- ferrous disulfide
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- 229940095991 ferrous disulfide Drugs 0.000 title claims description 50
- 238000000034 method Methods 0.000 title description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000006230 acetylene black Substances 0.000 claims abstract description 22
- 239000006258 conductive agent Substances 0.000 claims abstract description 22
- 239000010439 graphite Substances 0.000 claims abstract description 22
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 238000000576 coating method Methods 0.000 claims abstract description 19
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 50
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 50
- 229920001577 copolymer Polymers 0.000 claims description 36
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 35
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 35
- 239000003960 organic solvent Substances 0.000 claims description 29
- 239000007774 positive electrode material Substances 0.000 claims description 25
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 22
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 22
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 21
- 239000003792 electrolyte Substances 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 16
- 239000000839 emulsion Substances 0.000 claims description 16
- 238000002360 preparation method Methods 0.000 claims description 16
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 15
- 229910052744 lithium Inorganic materials 0.000 claims description 15
- 230000004888 barrier function Effects 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 239000007773 negative electrode material Substances 0.000 claims description 7
- -1 Polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 4
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical class CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 3
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 claims description 3
- 238000004821 distillation Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 claims description 3
- 229910001486 lithium perchlorate Inorganic materials 0.000 claims description 3
- 239000012046 mixed solvent Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 5
- 229910006608 Li—FeS2 Inorganic materials 0.000 abstract 1
- GBFLZEXEOZUWRN-VKHMYHEASA-N S-carboxymethyl-L-cysteine Chemical compound OC(=O)[C@@H](N)CSCC(O)=O GBFLZEXEOZUWRN-VKHMYHEASA-N 0.000 abstract 1
- 239000004809 Teflon Substances 0.000 abstract 1
- 229920006362 Teflon® Polymers 0.000 abstract 1
- 229910052960 marcasite Inorganic materials 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 229910052683 pyrite Inorganic materials 0.000 abstract 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 abstract 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 13
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 13
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 12
- 229910001416 lithium ion Inorganic materials 0.000 description 8
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 239000011257 shell material Substances 0.000 description 6
- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 description 2
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical class [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000011258 core-shell material Substances 0.000 description 2
- CJYZTOPVWURGAI-UHFFFAOYSA-N lithium;manganese;manganese(3+);oxygen(2-) Chemical compound [Li+].[O-2].[O-2].[O-2].[O-2].[Mn].[Mn+3] CJYZTOPVWURGAI-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- GOPYZMJAIPBUGX-UHFFFAOYSA-N [O-2].[O-2].[Mn+4] Chemical compound [O-2].[O-2].[Mn+4] GOPYZMJAIPBUGX-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- OTCVAHKKMMUFAY-UHFFFAOYSA-N oxosilver Chemical compound [Ag]=O OTCVAHKKMMUFAY-UHFFFAOYSA-N 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 229910001923 silver oxide Inorganic materials 0.000 description 1
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Substances [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- Y02E60/12—
Abstract
The one-use Li-FeS2 button cell comprises: a button positive electrode shell, a button negative electrode cover, a membrane between positive and negative electrode, a web positive collector fixed on side surface of positive electrode near the shell, a web negative collector fixed on inner side of negative cover, or a conductive coating on positive shell and negative cover, respectively. Wherein, the components with weight share in positive electrode comprises: 86~95% FeS2, 2~8% acetylene black or ultrathin conductive graphite as conductive agent, and 3~6% teflon or SCMC. The advantages of this invention include: portable, high capacity, high discharge platform, high specific energy, low cost, and environmental friend.
Description
Technical field
The present invention relates to a kind of button cell that utilizes converting chemical energy into electric energy and preparation method thereof, be specifically a kind of be negative pole with lithium (Li), ferrous disulfide (FeS
2) powder is anodal lithium-ferrous disulfide disposable button cell and preparation method thereof
Background technology
Zn-AgO of common in the market 1.5V
2Button cell and alkaline Zn-MnO
2Button cell.Zn-AgO
2The button cell specific energy is low, and expensive, and the SR927 capacity is about 40mAh.Alkalescence Zn-MnO
2Button cell contains mercury has pollution to environment, is difficult to long term survival in the international market.
Application number is that 200410025777.X, denomination of invention are the patent application of " lithium ion battery of portable electric appts ", a kind of lithium ion battery of portable electric appts is disclosed, comprise electrode, interelectrode barrier film and electrolyte etc. that positive electrode active materials, negative active core-shell material and these materials in housing, the housing constitute, it is characterized in that: positive electrode active materials is to adopt lithium and cobalt oxides (LiCoO
2) and lithium manganese oxide (LiMn
2O
4) composite material that mixes.Carry the power supply of electronic equipment as mobile phone, digital camera, MP3 etc., have that the battery cost is low, performance is excellent, overcome the easy expansion issues of lithium ion battery, improved the performance of overcharging of battery.
Its principal claim be " 1, a kind of lithium ion battery of portable electric appts; comprise electrode, interelectrode barrier film and electrolyte etc. that positive electrode active materials, negative active core-shell material and these materials in housing, the housing constitute, it is characterized in that: positive electrode active materials is to adopt lithium and cobalt oxides (LiCoO
2) and lithium manganese oxide (LiMn
2O
4) composite material that mixes.”
Application number is 01144621.8, denomination of invention is the patent of " a kind of polymer lithium ion chargeable button cell and preparation method ", relate to a kind of polymer Li-ion and can fill button cell, this battery is made up of anode cover 1, anodal coating 9, plus plate current-collecting body 3, plus plate current-collecting body coating 10, positive pole 5, electrolyte membrance 7, negative pole 6, negative current collector coating 11, negative current collector 4, negative pole coating 12, negative electrode shell 2, sealing ring 8.The present invention also provides a kind of preparation method of polymer lithium ion chargeable button cell, the preparation method who it is characterized in that conductive coating, this method are that spray treatment is carried out on the surface of the inner surface of positive electrode shell 1, negative electrode shell 2 to battery component and plus plate current-collecting body 3, negative current collector 4.The present invention compares with existing button cell, and it is light to have safety, specific energy height, characteristics such as high load capability, life-span length.
Its principal claim is " 1; a kind of polymer lithium ion chargeable button cell; this battery is by anode cover (1); anodal coating (9); plus plate current-collecting body (3); plus plate current-collecting body coating (10), anodal (5), electrolyte membrance (7), negative pole (6), negative current collector coating (11), negative current collector (4), negative pole coating (12), negative electrode shell (2), sealing ring (8) is formed, it is characterized in that: a) positive pole of this battery (5), at least contain a kind of polymer assemblies in negative pole (6) and the electrolyte membrance elements such as (7), this polymer assemblies is insoluble to carbonates, organic solvents such as lithium hexafluoro phosphate can be polyvinylidene fluoride, polyacrylic polymer of hexafluoro or mutual copolymer; B) surface of the inner surface of the positive electrode shell (1) of this battery, negative electrode shell (2) and plus plate current-collecting body (3), negative current collector (4) all is coated with one deck conductive coating.”
Summary of the invention
Because Zn-AgO of 1.5V
2The button cell specific energy is low, 1.5V primary alkali Zn-MnO
2The environment that the button cell harm humans is depended on for existence all can not adapt to the needs of modern small consuming device, so the purpose of this invention is to provide lithium-ferrous disulfide disposable button cell of a kind of low cost, high-energy-density environmental protection and preparation method thereof.
For overcoming the prior art weak point, realize above-mentioned purpose, technical scheme of the present invention is:
A kind of lithium-ferrous disulfide disposable button cell comprises: button anode cover and button negative cover, positive pole and negative pole are arranged in the housing, and have barrier film between positive pole and the negative pole, it is characterized in that: positive active material is a ferrous disulfide; Negative electrode active material is a lithium.
According to described lithium-ferrous disulfide disposable button cell, it is characterized in that: be fixed with plus plate current-collecting body by on the side surface of button anode cover at positive pole; The inboard of button negative cover is fixed with negative current collector.
According to described lithium-ferrous disulfide disposable button cell, it is characterized in that: the inner surface of button anode cover and button negative cover is coated with one deck conductive coating respectively.
According to described lithium-ferrous disulfide disposable button cell, it is characterized in that: anodal composition percentage by weight comprises: ferrous disulfide powder 86～95%; Conductive agent acetylene black or ultrafine electricity conductive graphite 2～8%; Polytetrafluoroethylene or sodium carboxymethylcellulose 3～6%.
According to described lithium-ferrous disulfide disposable button cell, it is characterized in that: anodal composition percentage by weight is: ferrous disulfide powder 93%; Conductive agent acetylene black or ultrafine electricity conductive graphite 4%; Polytetrafluoroethylene or sodium carboxymethylcellulose 3%.
A kind of preparation method of lithium-ferrous disulfide disposable button cell, it is characterized in that: (1) positive active material adopts the ferrous disulfide powder, conductive agent is acetylene black or ultrafine electricity conductive graphite, add high molecular weight ptfe emulsion or sodium carboxymethyl cellulose solution and organic solvent ethanol or acetone then and form mixed copolymer, the round pie positive pole of given size, vacuum bakeout drying are then made in punching press; (2) button anode cover, button negative cover are done clean; (3) plus plate current-collecting body is pressed into anodal mixed copolymer by on the surface of anode cover one side, and negative current collector spots weld the inboard of negative cover; Perhaps anode cover and negative cover inner surface all are coated with one deck conductive coating; (4) negative electrode active material is a lithium; (5) negative pole lithium sheet is put in the button negative cover, the folded then barrier film of going up is folded and had been soaked electrolytical anodal cake, and the button anode cover that closes at last gets final product.
Preparation method according to described lithium-ferrous disulfide disposable button cell is characterized in that: the consumption of positive active material ferrous disulfide is 86～95%; The consumption of conductive agent acetylene black or ultrafine electricity conductive graphite is 2～8% of a dried mixed copolymer weight; The solid content of high molecular weight ptfe emulsion or sodium carboxymethyl cellulose solution is 3～6% of a dried mixed copolymer weight; The consumption of organic solvent ethanol or acetone is 5～20% of wet mixed copolymer weight, and organic solvent ethanol or acetone is evaporation after toasting drying; 80～120 ℃ of described vacuum bakeout baking temperatures, stoving time 4～12 hours.
Preparation method according to described lithium-ferrous disulfide disposable button cell, it is characterized in that: the electrolyte preparation method that soaks anodal cake is: will be mixed with mixed solvent according to 1: 1: 1 part by weight by organic solvent propene carbonate, dimethyl carbonate, the two luxuriant pentanes that impurity and moisture content are removed in distillation, the lithium chloride electrolyte that adds 1M lithium perchlorate electrolyte and 1% percentage by weight fully dissolves and makes electrolyte; It is 10 minutes that anodal cake soaks the electrolytical time, and temperature is a normal temperature.
Advantageous effect of the present invention is: adopt cheap positive active material ferrous disulfide (FeS
2) and the 1.5V Li-FeS that makes of the negative electrode active material lithium (Li) of density metal minimum
2A button cell has light, high power capacity, high discharge platform, the advantage of the low and environmental protection of cost.Owing to be coated with one deck conductive coating in the cap inboard or connect reticulated collectors, the internal resistance of cell is reduced significantly, thereby improve the electrical property of battery, have high-energy-density, improved the operating efficiency of battery.For example make button cell of 1.5VFR927, the internal resistance of cell 500 Ω, capacity reaches more than the 70mAh, than Zn-AgO of 1.5V
2Button cell exceeds about 1 times.
Description of drawings
Figure is a structural representation of the present invention.
In the accompanying drawing: 1, button anode cover; 2, positive pole; 3, barrier film; 4, negative pole; 5, button negative cover.
Embodiment
The present invention is specially adapted to 1.5VLi-FeS
2Disposable button cell.The Li-FeS that also can be used for other voltage
2Disposable button cell.The embodiment of the invention is high-energy-density environmental protection 1.5V Li-FeS
2Disposable button cell.
A kind of lithium-ferrous disulfide disposable button cell of the present invention, as shown in the figure, comprising: button anode cover 1 and button negative cover 5 have positive pole 2 and negative pole 4 in the housing, have barrier film 3 between positive pole 2 and the negative pole 4, it is characterized in that: positive active material is a ferrous disulfide; Negative electrode active material is a lithium.
The present invention is fixed with plus plate current-collecting body anodal 2 by on the side surface of button anode cover 1; The inboard of button negative cover 5 is fixed with negative current collector; Collector is netted.Perhaps the present invention is coated with one deck conductive coating respectively at the inner surface of button anode cover and button negative cover.
Anodal 2 composition percentage by weight comprises among the present invention: ferrous disulfide powder 86～95%; Conductive agent acetylene black or ultrafine electricity conductive graphite 2～8%; Polytetrafluoroethylene or sodium carboxymethylcellulose 3～6%.
Advantage of the present invention is:
1, positive active material ferrous disulfide (FeS
2) resource Feng Yuan, cheap, the density of negative electrode active material Li is minimum in all metals, therefore utilizes ferrous disulfide (FeS
2) and lithium (Li) as a button cell specific energy of 1.5V height, low, the environmental protection of cost of both positive and negative polarity active material.
2, the anode cover of this battery and negative cover inner surface all are coated with one deck conductive coating, or connect the shape collector of throwing the net, and can reduce the conduction internal resistance greatly, increase work efficiency.
The preparation method of lithium-ferrous disulfide disposable button cell of the present invention:
1) positive active material is the higher ferrous disulfide (FeS of purity
2), conductive agent can be acetylene black or ultrafine electricity conductive graphite, add high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution and organic solvent ethanol or acetone then and form mixed copolymer, the round pie positive pole of given size is made in punching press.Vacuum bakeout drying then, 80～120 ℃ of baking temperatures, stoving time 4～12 hours.Positive active material ferrous disulfide (FeS
2), consumption be 86～95%; The consumption of conductive agent acetylene black or ultrafine electricity conductive graphite is 2～8% of a dried mixed copolymer weight; The solid content of high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution is 3～6% of a dried mixed copolymer weight; The consumption of organic solvent ethanol or acetone is 5～20% of wet mixed copolymer weight, and organic solvent ethanol or acetone is all evaporations after toasting drying.
2) organic solvent can be ethanol or acetone etc.
3) button anode cover, button negative cover, collector are done clean.
4) plus plate current-collecting body is pressed into anodal mixed copolymer by on the surface of anode cover one side.Negative current collector spots weld the inboard of negative cover.
5) or button anode cover and button negative cover inner surface all be coated with one deck conductive coating.
6) negative pole is to have laminated to be die-cut into the regulation shape.
7) negative pole lithium (Li) sheet is put in the negative cover, the folded then barrier film of going up is folded and had been soaked electrolytical anodal cake, and the anode cover that closes at last gets final product.Electrolyte can be selected conventional electrolysis matter for use, also can adopt other electrolyte, as: will be mixed with mixed solvent according to 1: 1: 1 part by weight by organic solvent propene carbonate (PC), dimethyl carbonate (DME), the two luxuriant pentanes (DOL) that impurity and moisture content are removed in distillation, add the very high 1M lithium perchlorate (LiClO of purity
4) lithium chloride (LiCl) electrolyte of electrolyte and 1% percentage by weight fully dissolves and make electrolyte.It is 10 minutes that anodal cake soaks the electrolytical time, and temperature is a normal temperature.
Embodiment 1
Positive active material is the higher ferrous disulfide (FeS of purity
2), conductive agent can be acetylene black or ultrafine electricity conductive graphite, add high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution and organic solvent ethanol or acetone then and form mixed copolymer, the round pie positive pole of given size is made in punching press.Vacuum bakeout drying then, 80～120 ℃ of baking temperatures, stoving time 4～12 hours.Positive active material ferrous disulfide (FeS
2), consumption be 93%; The consumption of conductive agent acetylene black or ultrafine electricity conductive graphite is 4% of a dried mixed copolymer weight; The solid content of high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution is 3% of a dried mixed copolymer weight; The consumption of organic solvent ethanol or acetone is 10% of wet mixed copolymer weight, and organic solvent ethanol or acetone is all evaporations after toasting drying.
Embodiment 2
Positive active material is the higher ferrous disulfide (FeS of purity
2), conductive agent can be acetylene black or ultrafine electricity conductive graphite, add high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution and organic solvent ethanol or acetone then and form mixed copolymer, the round pie positive pole of given size is made in punching press.Vacuum bakeout drying then, 80～120 ℃ of baking temperatures, stoving time 4～12 hours.Positive active material ferrous disulfide (FeS
2), consumption be 89%; The consumption of conductive agent acetylene black or ultrafine electricity conductive graphite is 7% of a dried mixed copolymer weight; The solid content of high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution is 4% of a dried mixed copolymer weight; The consumption of organic solvent ethanol or acetone is 5% of wet mixed copolymer weight, and organic solvent ethanol or acetone is all evaporations after toasting drying.
Positive active material is the higher ferrous disulfide (FeS of purity
2), conductive agent can be acetylene black or ultrafine electricity conductive graphite, add high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution and organic solvent ethanol or acetone then and form mixed copolymer, the round pie positive pole of given size is made in punching press.Vacuum bakeout drying then, 80～120 ℃ of baking temperatures, stoving time 4～12 hours.Positive active material ferrous disulfide (FeS
2), consumption be 91%; The consumption of conductive agent acetylene black or ultrafine electricity conductive graphite is 3% of a dried mixed copolymer weight; The solid content of high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution is 6% of a dried mixed copolymer weight; The consumption of organic solvent ethanol or acetone is 15% of wet mixed copolymer weight.Organic solvent ethanol or acetone is all evaporations after toasting drying.
Positive active material is the higher ferrous disulfide (FeS of purity
2), conductive agent can be acetylene black or ultrafine electricity conductive graphite, add high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution and organic solvent ethanol or acetone then and form mixed copolymer, the round pie positive pole of given size is made in punching press.Vacuum bakeout drying then, 80～120 ℃ of baking temperatures, stoving time 4～12 hours.Positive active material ferrous disulfide (FeS
2), consumption be 92%; The consumption of conductive agent acetylene black or ultrafine electricity conductive graphite is 4% of a dried mixed copolymer weight; The solid content of high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution is 4% of a dried mixed copolymer weight; The consumption of organic solvent ethanol or acetone is 10% of wet mixed copolymer weight.Organic solvent ethanol or acetone is all evaporations after toasting drying.
Positive active material is the higher ferrous disulfide (FeS of purity
2), conductive agent can be acetylene black or ultrafine electricity conductive graphite, add high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution and organic solvent ethanol or acetone then and form mixed copolymer, the round pie positive pole of given size is made in punching press.Vacuum bakeout drying then, 80～120 ℃ of baking temperatures, stoving time 4～12 hours.Positive active material ferrous disulfide (FeS
2), consumption be 92%; The consumption of conductive agent acetylene black or ultrafine electricity conductive graphite is 5% of a dried mixed copolymer weight; The solid content of high molecular weight ptfe (PTFE) emulsion or sodium carboxymethylcellulose (CMC) aqueous solution is 3% of a dried mixed copolymer weight; The consumption of organic solvent ethanol or acetone is 5% of wet mixed copolymer weight.Organic solvent ethanol or acetone is all evaporations after toasting drying.
The chemical formula title is described as follows among the present invention:
1) Li lithium
2) FeS
2Ferrous disulfide
3) Zn zinc
4) AgO
2Silver oxide
5) MnO
2Manganese dioxide
6) PTFE polytetrafluoroethylene
7) CMC sodium carboxymethylcellulose
Claims (8)
1, a kind of lithium-ferrous disulfide disposable button cell, comprise: button anode cover (1) and button negative cover (5), positive pole (2) and negative pole (4) are arranged in the housing, have barrier film (3) between anodal (2) and the negative pole (4), it is characterized in that: positive active material is a ferrous disulfide; Negative electrode active material is a lithium.
2, lithium-ferrous disulfide disposable button cell according to claim 1 is characterized in that: be fixed with plus plate current-collecting body in anodal (2) by on the side surface of button anode cover (1); The inboard of button negative cover (5) is fixed with negative current collector.
3, lithium-ferrous disulfide disposable button cell according to claim 1 is characterized in that: the inner surface of button anode cover and button negative cover is coated with one deck conductive coating respectively.
4, lithium-ferrous disulfide disposable button cell according to claim 1 is characterized in that: the composition percentage by weight of anodal (2) comprising: ferrous disulfide powder 86～95%; Conductive agent acetylene black or ultrafine electricity conductive graphite 2～8%; Polytetrafluoroethylene or sodium carboxymethylcellulose 3～6%.
5, lithium-ferrous disulfide disposable button cell according to claim 4 is characterized in that: the composition percentage by weight of anodal (2) is: ferrous disulfide powder 93%; Conductive agent acetylene black or ultrafine electricity conductive graphite 4%; Polytetrafluoroethylene or sodium carboxymethylcellulose 3%.
6, a kind of preparation method of lithium-ferrous disulfide disposable button cell, it is characterized in that: (1) positive active material adopts the ferrous disulfide powder, conductive agent is acetylene black or ultrafine electricity conductive graphite, add high molecular weight ptfe emulsion or sodium carboxymethyl cellulose solution and organic solvent ethanol or acetone then and form mixed copolymer, the round pie positive pole of given size, vacuum bakeout drying are then made in punching press; (2) button anode cover, button negative cover are done clean; (3) plus plate current-collecting body is pressed into anodal mixed copolymer by on the surface of anode cover one side, and negative current collector spots weld the inboard of negative cover; Perhaps anode cover and negative cover inner surface all are coated with one deck conductive coating; (4) negative electrode active material is a lithium; (5) negative pole lithium sheet is put in the button negative cover, the folded then barrier film of going up is folded and had been soaked electrolytical anodal cake, and the button anode cover that closes at last gets final product.
7, the preparation method of lithium-ferrous disulfide disposable button cell according to claim 6 is characterized in that: the consumption of positive active material ferrous disulfide is 86～95%; The consumption of conductive agent acetylene black or ultrafine electricity conductive graphite is 2～8% of a dried mixed copolymer weight; The solid content of high molecular weight ptfe emulsion or sodium carboxymethyl cellulose solution is 3～6% of a dried mixed copolymer weight; The consumption of organic solvent ethanol or acetone is 5～20% of wet mixed copolymer weight, and organic solvent ethanol or acetone is evaporation after toasting drying; 80～120 ℃ of described vacuum bakeout baking temperatures, stoving time 4～12 hours.
8, the preparation method of lithium-ferrous disulfide disposable button cell according to claim 6, it is characterized in that: the electrolyte preparation method that soaks anodal cake is: will be mixed with mixed solvent according to 1: 1: 1 part by weight by organic solvent propene carbonate, dimethyl carbonate, the two luxuriant pentanes that impurity and moisture content are removed in distillation, the lithium chloride electrolyte that adds 1M lithium perchlorate electrolyte and 1% percentage by weight fully dissolves and makes electrolyte; It is 10 minutes that anodal cake soaks the electrolytical time, and temperature is a normal temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100455510A CN100352086C (en) | 2005-12-14 | 2005-12-14 | Lithium-ferrous disulfide disposable button cell and its preparing method |
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| CNB2005100455510A CN100352086C (en) | 2005-12-14 | 2005-12-14 | Lithium-ferrous disulfide disposable button cell and its preparing method |
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| CN1790781A true CN1790781A (en) | 2006-06-21 |
| CN100352086C CN100352086C (en) | 2007-11-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8785044B2 (en) | 2008-10-17 | 2014-07-22 | Eveready Battery Company, Inc. | Lithium-iron disulfide cathode formulation having pyrite content and low conductive additives |
| CN106654173A (en) * | 2016-12-23 | 2017-05-10 | 安徽国威电动车制造有限公司 | Negative electrode material of lithium-iron sulfide lithium-ion battery and preparation method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5776758A (en) * | 1980-10-31 | 1982-05-13 | Toshiba Corp | Production of positive electrode for organic solvent battery |
| JPS57194461A (en) * | 1981-05-27 | 1982-11-30 | Toshiba Corp | Organic solvent cell |
| JPS598276A (en) * | 1982-07-06 | 1984-01-17 | Fuji Elelctrochem Co Ltd | Battery |
-
2005
- 2005-12-14 CN CNB2005100455510A patent/CN100352086C/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8785044B2 (en) | 2008-10-17 | 2014-07-22 | Eveready Battery Company, Inc. | Lithium-iron disulfide cathode formulation having pyrite content and low conductive additives |
| CN106654173A (en) * | 2016-12-23 | 2017-05-10 | 安徽国威电动车制造有限公司 | Negative electrode material of lithium-iron sulfide lithium-ion battery and preparation method |
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| Publication number | Publication date |
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| CN100352086C (en) | 2007-11-28 |
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