EP0328131A2
Expired / Lapsed
EP
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Secondary battery
Assignee: Mitsubishi Chemical Corp
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Filing: 1989-02-10
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Granted: —
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Expires: 2009-02-10
Abstract
Abstract There is disclosed a secondary battery having a negative electrode composed of an active substance and a carrier carrying the active substance, which comprises (1) the active substance is lithium or an alkali metal mainly composed of lithium, (2) the carrier is a mixture composed of (a) a carbonaceous material having (i) an atomic ratio of hydrogen/carbon of less than 0.15 and (ii) a spacing of (002) planes (d₀₀₂) as determined by X-ray wide angle diffraction of 3.37 Å or more and a crystallite size in the direction of c axis of 150 Å or less, and (b) a metal capable of forming an alloy with the active substance and/or an alloy with the active substance.
Inventors
- 👤 Mitsutaka C/O Advanced Materials Miyabayashi
- 👤 Toshifumi C/O Advanced Materials Lab. Nishii
- 👤 Hiroshi C/O Advanced Materials Laboratory Yui
- 👤 Kuniaki C/O Toshiba Battery Co. Ltd. Inada
- 👤 Katsuji C/O Toshiba Battery Co. Ltd. Ikeda
- 👤 Hiroyoshi C/O Toshiba Battery Co. Ltd. Nose
- 👤 Kenji C/O Toshiba Battery Co. Ltd. Tsuchiya
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 10:28
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/134; H01M10/00; H01M10/05; H01M10/052; H01M4/04; H01M4/0438; H01M4/0459; H01M4/36; H01M4/362; H01M4/364; H01M4/38; H01M4/58; H01M4/583; H01M4/587; H01M2004/026; H01M2004/027; H01M2300/00; H01M2300/0017; H01M2300/0025; H01M2300/0065; H01M2300/0068; H01M2300/0082; H01M4/043; H01M4/0433; H01M4/40; H01M4/405; H01M4/62; H01M4/621; H01M4/624; H01M4/625; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A secondary battery having a negative electrode composed of an active substance and a carrier carrying said active substance, characterized in that (1) said active substance is lithium or an alkali metal mainly composed of lithium, (2) said carrier is a mixture composed of (a) a carbonaceous material having (i) an atomic ratio of hydrogen/carbon of less than 0.15 and (ii) a spacing of (002) planes (d₀₀₂) as determined by X-ray wide angle diffraction of 3.37 Å or more and a crystallite size in the direction of c axis of 150 Å or less, and (b) a metal capable of forming an alloy with said active substance and/or an alloy with said active substance.
Claim 2
Dependent Claim
114 words
A secondary battery having a negative electrode composed of an active substance and a carrier carrying said active substance, characterized in that (1) said active substance is lithium or an alkali metal mainly composed of lithium, (2) said carrier is a mixture composed of (a) a carbonaceous material having (i) an atomic ratio of hydrogen/carbon of less than 0.15 and (ii) a spacing of (002) planes (d₀₀₂) as determined by X-ray wide angle diffraction of 3.37 Å or more and a crystallite size in the direction of c axis of 150 Å or less, and (b) a metal capable of forming an alloy with said active substance and/or an alloy with said active substance.
Claim 3
Dependent Claim
25 words
A secondary battery according to Claim 1, wherein a formulating amount of the carbonaceous material in the mixture is 10 to 97 % by weight.
Claim 4
Dependent Claim
25 words
A secondary battery according to Claim 2, wherein a formulating amount of the carbonaceous material in the mixture is 40 to 95 % by weight.
Claim 5
Dependent Claim
25 words
A secondary battery according to Claim 3, wherein a formulating amount of the carbonaceous material in the mixture is 50 to 93 % by weight.
Claim 6
Dependent Claim
33 words
A secondary battery according to Claim 1, wherein a volume average particle size of the carbonaceous material is 100 µm or less and a specific surface area thereof is 1 m²/g or more.
Claim 7
Dependent Claim
40 words
A secondary battery according to Claim 1, wherein said metal which is capable of being alloyed with said active substance and/or an alloy of said active substance is/are powder having a volume average particle size of 30 µm or less.
Claim 8
Dependent Claim
22 words
A secondary battery according to Claim 1, wherein a while pore of said carbonaceous material is 1.5 x 10⁻³ ml/g or more.
Claim 9
Dependent Claim
16 words
A secondary battery according to Claim 1, wherein a pore radius is 8 to 100 Å.
Claim 10
Dependent Claim
13 words
A secondary battery according to Claim 1, wherein the mixture is in uniform.
References Cited (Backward Citations)
No citation records indexed.
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