CN101562079B - Super-capacitor - Google Patents
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- CN101562079B CN101562079B CN2009101073189A CN200910107318A CN101562079B CN 101562079 B CN101562079 B CN 101562079B CN 2009101073189 A CN2009101073189 A CN 2009101073189A CN 200910107318 A CN200910107318 A CN 200910107318A CN 101562079 B CN101562079 B CN 101562079B
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- 239000003990 capacitor Substances 0.000 title abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000003792 electrolyte Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 10
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 10
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 9
- 239000010439 graphite Substances 0.000 claims abstract description 9
- 150000003624 transition metals Chemical class 0.000 claims abstract description 7
- 239000011149 active material Substances 0.000 claims description 19
- 239000002178 crystalline material Substances 0.000 claims description 19
- -1 methyl ethyl carbonate alkene ester Chemical class 0.000 claims description 18
- 239000011230 binding agent Substances 0.000 claims description 14
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 12
- 239000006258 conductive agent Substances 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000003610 charcoal Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 6
- SIXOAUAWLZKQKX-UHFFFAOYSA-N carbonic acid;prop-1-ene Chemical compound CC=C.OC(O)=O SIXOAUAWLZKQKX-UHFFFAOYSA-N 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- WDXYVJKNSMILOQ-UHFFFAOYSA-N 1,3,2-dioxathiolane 2-oxide Chemical compound O=S1OCCO1 WDXYVJKNSMILOQ-UHFFFAOYSA-N 0.000 claims description 3
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 3
- SJHAYVFVKRXMKG-UHFFFAOYSA-N 4-methyl-1,3,2-dioxathiolane 2-oxide Chemical compound CC1COS(=O)O1 SJHAYVFVKRXMKG-UHFFFAOYSA-N 0.000 claims description 3
- 239000004966 Carbon aerogel Substances 0.000 claims description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 3
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 3
- 150000003863 ammonium salts Chemical class 0.000 claims description 3
- 125000000129 anionic group Chemical group 0.000 claims description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 229910003002 lithium salt Inorganic materials 0.000 claims description 3
- 159000000002 lithium salts Chemical class 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 229910052711 selenium Inorganic materials 0.000 claims description 3
- 159000000000 sodium salts Chemical class 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 229910052714 tellurium Inorganic materials 0.000 claims description 3
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 2
- 229920000178 Acrylic resin Polymers 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 abstract description 7
- 239000013078 crystal Substances 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 239000013543 active substance Substances 0.000 abstract 2
- 150000001450 anions Chemical class 0.000 abstract 1
- 150000001768 cations Chemical class 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000004146 energy storage Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000006230 acetylene black Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 150000004706 metal oxides Chemical class 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000005030 aluminium foil Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001290 LiPF6 Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a novel super-capacitor which comprises an anode, a cathode, a diaphragm between the anode and the cathode and an electrolyte; the active substance of the anode is a sandwich structure crystal material which can inversely embed and disassemble the anion in the electrolyte and the mixture or composite material of a porous carbon material; the active substance of the cathode is a sandwich structure crystal material which can embed and disassemble inversely the cation in the electrolyte and the mixture or composite material of the porous carbon material; the sandwich structure crystal material is graphite which is at least one kind of the disulphide of the transition metal. The super-capacitor utilizes the sandwich clearance of the sandwich structure crystal material to embed-disassemble ions, thus greatly improving the charge storage capability of the electrode and leading the energy density to be far higher than that of the traditional porous carbon super-capacitor.
Description
[technical field]
The present invention relates to the energy storage device technical field, especially relate to a kind of ultracapacitor.
[background technology]
Ultracapacitor be development in recent years get up a kind of based on electrode/solution interface electrochemical process, be specifically designed to the extraordinary capacitor of energy storage.Ultracapacitor has the super large capacitor amount of farad level even thousand farads of levels; Its energy density is than the high hundreds of times of traditional electrolytic capacitor; Power density ratio secondary cell height nearly a hundred times; Do not need care and maintenance in the use, charge and discharge circulation life reaches more than 500,000 times, is a kind of desirable high stability, high-power physics secondary power supply.All be widely used in miniature electric instrument, electric automobile auxiliary power, solar energy/wind energy power plant and military field.
Just proposed the notion of electric double layer first and set up the physical model of electric double layer as far back as H.L.F.Helmhotz in 1879, but just developed initial double electric layer capacitor, be called ultracapacitor again by General Electric company up to 1954.Since the seventies in 20th century, countries such as Japan, the U.S., Russia have made big quantity research aspect ultracapacitor, and its research and development and industrialization process are mainly carried out respectively by each big trans-corporation.NEC, PANASONIC, field, village company etc. have reached more than 20 year to the research of ultracapacitor, and various types of ultracapacitors have formed series of products.PANASONIC was succeeded in developing the 10F that is made up of active carbon and organic electrolyte solution in 1978,1.6V low-voltage large value capacitor, and its commodity are called " gold capacitor device " (gold capacitor).NEC is also at the 20 beginnings of the century FA that releases one after another, FZ, and FS, FYH and FYD, FR, FE, series of products such as FK, commodity " ultracapacitor " by name are (Supercapacitor).Also have companies such as Japanese NEC and U.S. ELNA also all to be devoted to the research and development of ultracapacitor in addition, and all developed the product of a series of function admirables.
The subject matter of restriction ultracapacitor development is that its energy density is still lower at present.The energy density of ultracapacitor is about 8～20Wh/kg, and (110～160Wh/kg) compare the gap that an one magnitude is arranged with lithium ion battery.This is also to a great extent with the application limitations of the ultracapacitor auxiliary power field in low energy densities, high power output.How to improve the energy density of ultracapacitor greatly, become the focus of ultracapacitor research in the world.
The performance of ultracapacitor at first depends on the performance characteristics of the electrode material that is adopted.The electrode material that is currently applied to commercialization ultracapacitor product mainly contains active carbon and metal oxide.The development of commercialization active carbon ultracapacitor at present is comparatively ripe, and its actual capacity has also approached theoretical capacity, is subject to its physical characteristic and is difficult to have further raising; Though the metal oxide containing precious metals and the hyrate material that with RuO2 are representative have higher specific capacity; But owing to the high practicability that is difficult to of its prices of raw and semifnished materials; Though be the base metal oxide material practicability of representative with MnO2; But the specific energy density advantage is also not obvious mutually with absorbent charcoal material, and cycle life also still remains to be improved.
[summary of the invention]
Based on this, be necessary to provide a kind of ultracapacitor that improves energy density.
A kind of ultracapacitor; Comprise positive pole, negative pole, the barrier film between both positive and negative polarity and electrolyte; The active material of said positive pole be for can embedding, take off anionic layer structure crystalline material and the mixture or the composite material of porous carbon material in the embedding electrolyte reversiblely, and the active material of said negative pole is for can embed, take off cationic layer structure crystalline material and the mixture or the composite material of porous carbon material in the embedding electrolyte reversiblely.
Above-mentioned ultracapacitor utilizes the interlayer gap of layer structure crystalline material to embed, take off the embedding ion, has improved charge storage capability greatly, and its energy density is far above traditional porous charcoal super capacitor.Energy density reaches as high as 60Wh/kg, and is suitable with nickel-hydrogen secondary cell, is equivalent to 1/2nd of lithium rechargeable battery.
In a preferred embodiment, at least a in the described layer structure crystalline material disulphide that is graphite, transition metal.
In a preferred embodiment, the disulphide general formula of described transition metal is MX2, and wherein M is IVB～VIIB group 4 transition metal element, and X is S, Se, Te.
In a preferred embodiment, described porous carbon material comprises at least a in active carbon powder, NACF, carbon aerogels, the CNT.
In a preferred embodiment, the composition of the coating material of described negative or positive electrode and percentage by weight are active material 70～90%, conductive agent 3～20%, binding agent 1～10%.
In a preferred embodiment, the solute in the described electrolyte is at least a in lithium salts, sodium salt, sylvite, the ammonium salt.
In a preferred embodiment, the solvent in the described electrolyte is at least a in ethylene carbonate, propene carbonate, butylene, methyl ethyl carbonate alkene ester, dimethyl carbonate, diethyl carbonate, ethylene sulfite, propylene sulfite, gamma-butyrolacton, ethyl acetate, the acetonitrile.
In a preferred embodiment, described conductive agent is at least a in electrically conductive graphite, conductive black, the conduction charcoal fiber.
In a preferred embodiment, described binding agent is at least a in polytetrafluoroethylene, Kynoar, carboxymethyl cellulose, polyvinyl alcohol, the acrylic resin.
In a preferred embodiment, described barrier film is a kind of in polypropylene porous membrane, polyethylene porous membrane, the glass fiber porous membrane.
[embodiment]
The tradition ultracapacitor adopts porous carbon material (especially active carbon powder) as active material fully, and its capacitance is mainly determined by the effective surface area of porous carbon material.Its energy storage principle is surperficial energy storage, promptly has only the surface of active material to participate in the energy storage, participates in energy storage with all active materials of secondary cell and compares, and the difference of essence is arranged.This causes traditional ultracapacitor to be compared with secondary cell, and the energy density gap is usually about one to two one magnitude.
In following execution mode, propose to adopt the layer structure crystalline material as active material, utilize the lamellar spacing store charge of layer structure crystalline material.Select for use suitable layered crystal structure material to cooperate with electrolyte ion, make electrolyte ion can embed reversiblely-Tuo is embedded in the interlayer gap of layer structure crystalline material.The utilance of its active material is much higher than traditional ultracapacitor.
A kind of novel ultracapacitor, the crystalline material that will have layer structure is as electrode material.Ultracapacitor comprises positive pole, negative pole, the barrier film between both positive and negative polarity and electrolyte.Anodal active material be for can embedding, take off anionic layer structure crystalline material and the mixture or the composite material of porous carbon material in the embedding electrolyte reversiblely, and the active material of negative pole is for can embed, take off cationic layer structure crystalline material and the mixture or the composite material of porous carbon material in the embedding electrolyte reversiblely.Above-mentioned ultracapacitor utilizes the interlayer gap of layer structure crystalline material to embed, take off the embedding ion, has improved charge storage capability greatly, and its energy density is far above traditional porous charcoal super capacitor.Energy density reaches as high as 60Wh/kg, and is suitable with nickel-hydrogen secondary cell, is equivalent to 1/2nd of lithium rechargeable battery.
At least a in the disulphide that above-mentioned layer structure crystalline material is graphite, transition metal.The disulphide general formula of transition metal is MX2, and wherein M is IVB～VIIB group 4 transition metal element, and X is S, Se, Te.Described porous carbon material comprises at least a in active carbon powder, NACF, carbon aerogels, the CNT.
Active material needs to cooperate with conductive agent, binding agent that modulate can moulding.In preferred embodiment, the composition of negative or positive electrode and percentage by weight are active material 70～90%, conductive agent 3～20%, binding agent 1～10%.
With active material, binding agent (like polytetrafluoroethylene), conductive agent furnishing slurry, on twin rollers, be rolled into diaphragm repeatedly, be pressed onto again and process positive and negative plate on the collector; Or, be coated in coating machine and process positive and negative plate on the collector active material, binding agent (like Kynoar), conductive agent furnishing slurry.The binding agent that adopts is at least a in polytetrafluoroethylene, Kynoar, carboxymethyl cellulose, the polyvinyl alcohol.The conductive agent that adopts is at least a of electrically conductive graphite, conductive black, conduction charcoal fiber.Collector can adopt LITHIUM BATTERY aluminium foil, Copper Foil, the etched foil of capacitor, stainless (steel) wire etc.
Between positive pole, negative pole, sandwich barrier film, the stack alignment is wound into capacitor body on up-coiler.The barrier film that adopts is a kind of in polypropylene porous membrane, polyethylene porous membrane, the glass fiber porous membrane.
Capacitor body is placed housing, seal after pouring into an amount of electrolyte, obtain the ultracapacitor monomer.Solute in the electrolyte is at least a in lithium salts, sodium salt, sylvite, the ammonium salt.Solvent in the electrolyte is at least a of ethylene carbonate, propene carbonate, butylene, methyl ethyl carbonate alkene ester, dimethyl carbonate, diethyl carbonate, ethylene sulfite, propylene sulfite, gamma-butyrolacton, ethyl acetate, acetonitrile.According to the needs of different application occasion, that above-mentioned ultracapacitor housing can adopt is cylindrical, square, coin shape etc.
Above-mentioned ultracapacitor adopts the layer structure crystalline material as active material, utilizes the lamellar spacing store charge of layer structure crystalline material.Select for use suitable layered crystal structure material to cooperate with electrolyte ion, make electrolyte ion can embed reversiblely-Tuo is embedded in the interlayer gap of layer structure crystalline material.Improved charge storage capability greatly, its energy density is far above traditional porous charcoal super capacitor.Energy density can reach 60Wh/kg, and is suitable with nickel-hydrogen secondary cell, is equivalent to 1/2nd of lithium rechargeable battery.Make ultracapacitor no longer be confined to the low-density stored energy application of high power.Expanded following application of ultracapacitor greatly.
Enumerating embodiment below more specifically explains foregoing and characteristics.But the present invention not only is confined to the following stated embodiment.
Embodiment 1
Negative pole adopts commercialization graphite powder (as the layer structure crystalline material), activated carbon powder (as porous carbon material), acetylene black (as conductive agent) and Kynoar (as binding agent), and mass percent was followed successively by 70: 15: 10: 5.Earlier graphite powder, activated carbon powder, three kinds of powder of acetylene black are mixed in colter formula mixer or ball mill.Simultaneously binding agent is added an amount of NMP (N-methyl pyrrolidone), stirring and dissolving.The powder that mixes is slowly added continuation stirring in the binding agent slurries, process slurry.Utilize coating machine evenly to be coated on the Copper Foil material that mixes, dual coated, copper thickness is 15 μ m, 120 ℃ of baking temperatures.Anodal commercialization graphite powder, activated carbon powder, acetylene black and the Kynoar of adopting, mass percent was followed successively by 10: 75: 10: 5.Earlier graphite powder, activated carbon powder, three kinds of powder of acetylene black are mixed in colter formula mixer or ball mill.Simultaneously binding agent is added stirring and dissolving among an amount of NMP.The powder that mixes is slowly added continuation stirring in the binding agent slurries, process slurry.Utilize coating machine evenly to be coated on the aluminium foil material that mixes, dual coated, aluminum foil thickness is 20 μ m, 120 ℃ of baking temperatures.Positive and negative electrode is cut into given size respectively, between positive pole, negative pole, sandwich barrier film, the stack alignment is wound into capacitor body on up-coiler.The barrier film that adopts is the polypropylene porous membrane.Capacitor body is placed housing, pour into an amount of electrolyte, electrolyte is that (wherein, EC is an ethylene carbonate for the LiPF6/ (EC+DMC) of 1mol/L and the Et3MeNBF4/PC of 1mol/L; DMC is a dimethyl carbonate; PC is a propene carbonate) with 1: 1 mixed of volume ratio, seal then, obtain the winding type super capacitor monomer.
Embodiment 2
The positive and negative plate manufacture method is with embodiment 1, and it is that the composite material of 200m2/g CNT replaces the active carbon among the embodiment that difference is with active carbon and specific area, and the energy density of the ultracapacitor that obtains is higher by about 5% than embodiment 1.
Embodiment 3
Other conditions are with embodiment 1, and difference is to replace the graphite among the embodiment 1 with the composite material of graphite and molybdenum bisuphide, and the energy density of the ultracapacitor that obtains is than embodiment 1 low about 3%.
Embodiment 4
The positive and negative pole material proportioning is with embodiment 1.Earlier graphite powder, activated carbon powder, three kinds of powder of acetylene black are mixed in colter formula mixer or ball mill.In mixer, stir on one side, Yi Bian utilize gases at high pressure to spray the bonding ptfe emulsion.The material that mixes is rolled in twin rollers repeatedly, make it film forming.Seam through the adjustment twin rollers is wide, makes diaphragm reach appointed thickness.Diaphragm is 80～110 ℃ of down oven dry, on twin rollers, diaphragm and stainless (steel) wire as collector forced together and processes pole piece.Pole piece is struck out disk, sandwich barrier film, assembling obtains button-shaped ultracapacitor.
Embodiment 5
Other conditions are with embodiment 1, and difference adopts AN (acetonitrile) to replace the PC (propene carbonate) among the embodiment 1 at electrolyte solvent, and the internal resistance of the ultracapacitor that obtains is lower by about 10% than embodiment 1, and energy density is higher by about 3% than embodiment 1.
The above embodiment has only expressed several kinds of execution modes of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with accompanying claims.
Claims (9)
1. a ultracapacitor comprises positive pole, negative pole, the barrier film between both positive and negative polarity and electrolyte, it is characterized in that the coating material of said negative or positive electrode comprises active material and conductive agent; The active material of said positive pole be for can embedding, take off anionic layer structure crystalline material and the mixture or the composite material of porous carbon material in the embedding electrolyte reversiblely, and the active material of said negative pole is for can embed, take off cationic layer structure crystalline material and the mixture or the composite material of porous carbon material in the embedding electrolyte reversiblely; At least a in the disulphide that described layer structure crystalline material is graphite and transition metal.
2. ultracapacitor according to claim 1 is characterized in that: the disulphide general formula of described transition metal is MX2, and wherein M is IVB～VIIB group 4 transition metal element, and X is S, Se, Te.
3. ultracapacitor according to claim 1 is characterized in that: described porous carbon material comprises at least a in active carbon powder, NACF, carbon aerogels, the CNT.
4. ultracapacitor according to claim 1 is characterized in that: the composition of the coating material of described negative or positive electrode and percentage by weight are active material 70～90%, conductive agent 3～20% and binding agent 1～10%.
5. ultracapacitor according to claim 1 is characterized in that: the solute in the described electrolyte is at least a in lithium salts, sodium salt, sylvite, the ammonium salt.
6. ultracapacitor according to claim 1 is characterized in that: the solvent in the described electrolyte is at least a in ethylene carbonate, propene carbonate, butylene, methyl ethyl carbonate alkene ester, dimethyl carbonate, diethyl carbonate, ethylene sulfite, propylene sulfite, gamma-butyrolacton, ethyl acetate, the acetonitrile.
7. ultracapacitor according to claim 4 is characterized in that: described conductive agent is at least a in electrically conductive graphite, conductive black, the conduction charcoal fiber.
8. ultracapacitor according to claim 4 is characterized in that: described binding agent is at least a in polytetrafluoroethylene, Kynoar, carboxymethyl cellulose, polyvinyl alcohol, the acrylic resin.
9. ultracapacitor according to claim 1 is characterized in that: described barrier film is a kind of in polypropylene porous membrane, polyethylene porous membrane, the glass fiber porous membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101073189A CN101562079B (en) | 2009-05-15 | 2009-05-15 | Super-capacitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101073189A CN101562079B (en) | 2009-05-15 | 2009-05-15 | Super-capacitor |
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| Publication Number | Publication Date |
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| CN101562079A CN101562079A (en) | 2009-10-21 |
| CN101562079B true CN101562079B (en) | 2012-03-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103198928B (en) * | 2012-01-09 | 2016-07-06 | 中国科学院长春应用化学研究所 | A kind of sodium ion electrochemical capacitor |
| EP2837009B1 (en) | 2012-04-13 | 2024-06-19 | Polyjoule, Inc. | Devices and methods including polyacetylenes |
| CN102683039A (en) * | 2012-05-15 | 2012-09-19 | 中国科学院长春应用化学研究所 | Electrochemical capacitor |
| CN102903540A (en) * | 2012-10-18 | 2013-01-30 | 中国科学院长春应用化学研究所 | Electrochemical capacitor |
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| CN1632893A (en) * | 2004-11-18 | 2005-06-29 | 复旦大学 | Electrochemical ultra-capacitor taking lithium ion battery electrode material as cathode |
| WO2008056791A1 (en) * | 2006-11-10 | 2008-05-15 | Fuji Jukogyo Kabushiki Kaisha | Lithium-ion secondary battery |
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