EP0249331A1
Expired / Lapsed
EP
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Method of manufacturing a secondary battery
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1987-05-07
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Granted: —
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Expires: 2007-05-07
Abstract
Abstract A secondary battery comprising a rechargeable positive electrode (5), a rechargeable lithium-containing negative electrode (3), a separator (4) allowing the positive electrode (5) and negative electrode (3) to be separated from each other, and organic electrolyte solution for connecting the positive electrode and negative electrode. The negative electrode (3) includes a complex having a carbon molded article made of carbon fiber of carbon powder having an interfacial distance (d₀₀₂) of 3.38 to 3.56 Å as measured by X-ray diffraction analysis using silicon as standard material, where lithium has been absorbed into the carbon molded article beforehand. The above value of interfacial distance corresponds to 3.36 to 3.48 Å as measured by X-ray diffraction analysis using no standard material.
Inventors
- 👤 Yuzuru Takahashi
- 👤 Yoshio Kawai
- 👤 Naoto Sakurai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 04:04
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/583; H01M4/587; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; H01M4/64; H01M4/66; H01M4/663; H01M10/056; H01M10/0564; H01M10/0566; H01M10/0568; H01M4/13; H01M4/133; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
99 words
A secondary battery comprising a rechargeable positive electrode (5), a rechargeable lithium-containing negative electrode (3), a separator (4) for separating said positive electrode (5) and negative electrode (3) from each other, and organic electrolyte solution for connecting said positive electrode (5) and negative electrode (3), characterised in that said negative electrode (3) includes a complex having a carbon molded article made of carbon fiber or carbon powder having an interfacial distance (d₀₀₂) of 3.38 to 3.56 Å as measured by X-ray diffraction analysis using silicon as standard material, wherein lithium has been absorbed into said carbon molded article beforehand.
Claim 2
Dependent Claim
99 words
A secondary battery comprising a rechargeable positive electrode (5), a rechargeable lithium-containing negative electrode (3), a separator (4) for separating said positive electrode (5) and negative electrode (3) from each other, and organic electrolyte solution for connecting said positive electrode (5) and negative electrode (3), characterised in that said negative electrode (3) includes a complex having a carbon molded article made of carbon fiber or carbon powder having an interfacial distance (d₀₀₂) of 3.38 to 3.56 Å as measured by X-ray diffraction analysis using silicon as standard material, wherein lithium has been absorbed into said carbon molded article beforehand.
Claim 3
Dependent Claim
34 words
A secondary battery according to claim 1, wherein said carbon fiber or carbon powder has an interfacial distance (d₀₀₂) or 3.36 to 3.48 Å as measured by X-ray diffraction analysis using no standard material.
Claim 4
Dependent Claim
19 words
A secondary battery according to claim 1, wherein said carbon fiber has a diameter of 0.01 to 100 µm.
Claim 5
Dependent Claim
21 words
A secondary battery according to claim 1, wherein said carbon powder has a mean particle size of 0.1 to 30 µm.
Claim 6
Dependent Claim
16 words
A secondary battery according to claim 1, wherein said carbon molded article is a laminated product.
Claim 7
Dependent Claim
25 words
A secondary battery according to claim 1, wherein said carbon molded article contains binder of 50 weight % of the carbon molded article or less.
Claim 8
Dependent Claim
24 words
A secondary battery according to claim 6, wherein said carbon molded article made of carbon fiber contains binder of 2 to 50 weight %.
Claim 9
Dependent Claim
24 words
A secondary battery according to claim 6, wherein said carbon molded article made of carbon powder contains binder of 1 to 20 weight %.
Claim 10
Dependent Claim
22 words
A secondary battery according to claim 1, wherein said carbon molded article has a specific electric resistance of 10⁶ Ω·cm or less.
Claim 11
Dependent Claim
21 words
A secondary battery according to claim 1, wherein said carbon molded article has a bulk density of 1 to 2 g/cm³.
Claim 12
Dependent Claim
29 words
A secondary battery according to claim 1, wherein said carbon molded article includes absorbed lithium, the amount of which is 0.1 to 65 g per 100 g carbon product.
Claim 13
Dependent Claim
22 words
A secondary battery according to claim 1, wherein said organic electrolyte solution contains organic solvent into which lithium salt has been dissolved.
Claim 14
Dependent Claim
19 words
A secondary battery according to claim 12, wherein said lithium salt has a concentration of 0.1 to 5 moℓ/ℓ.
Claim 15
Dependent Claim
17 words
A secondary battery according to claim 1, wherein said separator includes synthetic resin containing organic electrolyte solution.
References Cited (Backward Citations)
US4615959A
Cited
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