EP0510236A1
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EP
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Electrode for secondary battery
Assignee: Mitsubishi Chemical Corp
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Filing: 1991-04-26
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Granted: —
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Expires: 2011-04-26
Abstract
Abstract Disclosed is an electrode for secondary battery, which comprises lithium or an alkali metal composed mainly of lithium doped as the active substance in a carrier composed of a mixture of a carbonaceous material satisfying the following conditions (A) and an organic polymer having ion conductivity of lithium, (A) a carbonaceous material with a hydrogen/carbon (H/C) atomic ratio of less than 0.15, a spacing (d₀₀₂) of the (002) plane according to the X-ray wide angle diffraction method of 3.37 to 3.75 Å and a crystallite size in the c-axis direction (Lc) of 5 Å or more.
Inventors
- 👤 Mitsutaka c/o Yokkaichi Research Cnt Miyabayashi
- 👤 Manabu c/o Yokkaichi Research Cnt Hayashi
- 👤 Eiki c/o Yokkaichi Research Cnt Yasukawa
- 👤 Kikuko c/o Yokkaichi Research Cnt Miyata
- 👤 Mitsumasa c/o Yokkaichi Research Cnt Kaitoh
- 👤 Hiroshi c/o Yokkaichi Research Cnt Yui
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 00:31
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; H01M4/00; H01M4/02; H01M4/04; H01M4/0438; H01M4/0459; H01M4/0461; H01M4/13; H01M4/131; H01M4/36; H01M4/362; H01M4/364; H01M4/58; H01M4/583; H01M4/587; H01M4/60; H01M4/602; H01M4/62; H01M4/621; H01M4/622; H01M4/623; H01M10/058; H01M10/0587; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M2300/0065; H01M2300/0082; H01M4/0402; H01M4/0404; H01M4/38; H01M4/40; H01M4/405; H01M4/64; H01M4/70; H01M4/72; H01M4/74; H01M6/00; H01M6/04; H01M6/06; H01M6/10; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
110 words
An electrode for secondary battery, comprising lithium or an alkali metal composed mainly of lithium doped as the active substance in a carrier composed of a mixture of a carbonaceous material satisfying the following conditions (A) and a comductive polymer composition composed of lithium ion or an alkali metal ion composed mainly of lithium and a polymer having ion conductivity of lithium, (A) a carbonaceous material with a hydrogen/carbon (H/C) atomic ratio of less than 0.15, a spacing (d₀₀₂) of the (002) plane according to the X-ray wide angle diffraction method of 3.37 to 3.75 Å and a crystallite size in the c-axis direction (Lc) of 5 Å or more.
Claim 2
Dependent Claim
23 words
The electrode according to Claim 1, wherein the carbonaceous material is particles having a volume average particle size of 300 µm or less.
Claim 3
Dependent Claim
25 words
The electrode according to Claim 2, wherein the carbonaceous material has internally fine pores with a total fine pore volume of 1.5 x 10⁻³ ml/g.
Claim 4
Dependent Claim
21 words
The electrode according to Claim 3, wherein the carbonaceous material has an average file pore radium of 8 to 100 Å.
Claim 5
Dependent Claim
18 words
The electrode according to Claim 1, wherein said conductive polymer composition is consist of a polymer and lithium.
Claim 6
Dependent Claim
19 words
The electrode according to Claim 1, wherein the polymer has a lithium ion conductivity of 10⁻⁸ S/cm or more.
Claim 7
Dependent Claim
31 words
The electrode according to Claim 1, wherein the polymer is a polymer containing a monomer having a polar group containing O, S, P, N or a halogen, as a constitutional unit.
Claim 8
Dependent Claim
30 words
The electrode according to Claim 1, wherein the organic polymer is a polymer containing a monomer having a polar group containing O, S, P or N, as a constitutional unit.
Claim 9
Dependent Claim
30 words
The electrode according to Claim 1, wherein the organic polymer is at least one selected from a polymer containing a polyalkylene chain, polyepichlorohydrin, polyphosphazene, polyvinylidene fluoride and vinyl series polymer.
Claim 10
Dependent Claim
19 words
The electrode according to Claim 9, wherein the vinyl series polymer has a dielectric ratio of 4 or more.
Claim 11
Dependent Claim
32 words
The electrode according to Claim 9, wherein the vinyl series polymer is a polymer of at least one selected from a (meth)acrylate, unsaturated nitrile, vinyl ester, N-vinyl lactam, methacrylamide and glycerin (meth)acrylate.
Claim 12
Dependent Claim
22 words
The electrode according to Claim 9, wherein the organic polymer is a vinyl compound containing an organic compound having high dielectric ratio.
Claim 13
Dependent Claim
18 words
The electrode according to Claim 9, wherein the organic polymer is a vinyl compound containing a sorbitol derivative.
Claim 14
Dependent Claim
33 words
The electrode according to Claim 1, wherein an amount of the alkali metal in the conductive polymer composition is 0.01 to 2.0 mole to one unit of the recurring unit of the polymer.
Claim 15
Dependent Claim
24 words
The electrode according to Claim 14, wherein the alkali metal is derived from at least one selected from LiClO₄, LiBF₄, LiPF₆, LiAsF₆ and LiCF₃SO₃.
References Cited (Backward Citations)
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