EP0165589A2
Expired / Lapsed
EP
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Secondary battery and method of manufacturing the same
Assignee: Hitachi Ltd
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Filing: 1985-06-18
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Granted: —
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Expires: 2005-06-18
Abstract
Abstract The anode (2) and cathode (4) of a secondary battery are constructed by assembling graphite in its form. By employing the graphite as the starting material of the manufacture of the battery in this manner, the disintegration of the electrodes during the manufacture can be prevented. The battery thus manufactured exhibits battery function once it is charged and thenceforth, each time discharge and charge is repeated, the electrodes switch between the states of the graphite and graphite interlayer compounds owing to their reactions with ions and release of the ions, so that a high battery performance is achieved.
Inventors
- 👤 Atsuko Toyama
- 👤 Kazunori Fujita
- 👤 Shigeoki Nishimura
- 👤 Hiroyuki Sugimoto
- 👤 Noboru Ebato
- 👤 Shinpei Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 04:03
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/583; H01M4/587; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02P; Y02P70/00; Y02P70/50
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
73 words
A method of manufacturing a secondary battery wherein an organic solvent and an electrolyte are interposed between an anode (2) and a cathode (4), characterized in that said anode (2) and cathode (4) are made of graphite which produces interlayer compounds by reacting with anions and cations of said electrolyte respectively during charge, and that the graphite in a form before producing the interlayer compounds is assembled into a battery envelope (1, 3).
Claim 2
Independent Claim
73 words
A method of manufacturing a secondary battery wherein an organic solvent and an electrolyte are interposed between an anode (2) and a cathode (4), characterized in that said anode (2) and cathode (4) are made of graphite which produces interlayer compounds by reacting with anions and cations of said electrolyte respectively during charge, and that the graphite in a form before producing the interlayer compounds is assembled into a battery envelope (1, 3).
Claim 3
Dependent Claim
40 words
The method of claim 1, wherein the graphite of said anode (2) and/or said cathode (4) is fibrous or powdery graphite which is baked at a temperature of at least 2000°C and which is thereafter molded into a predetermined shape.
Claim 4
Independent Claim
18 words
The method of claim-2, wherein after the baking, the graphite is press-molded into the form of a sheet.
Claim 5
Independent Claim
77 words
A method of manufacturing a secondary battery wherein an organic solvent and an electrolyte are interposed between an anode (2) and a cathode (4), characterized in that said anode (2) and cathode (4) are made of graphite which produces interlayer compounds by reacting with anions and cations of said electrolyte respectively during charge, and that the interlayer compounds once produced have intercalary materials removed therefrom and are assembled into a battery envelope (1, 3) in those states.
Claim 6
Independent Claim
77 words
A method of manufacturing a secondary battery wherein an organic solvent and an electrolyte are interposed between an anode (2) and a cathode (4), characterized in that said anode (2) and cathode (4) are made of graphite which produces interlayer compounds by reacting with anions and cations of said electrolyte respectively during charge, and that the interlayer compounds once produced have intercalary materials removed therefrom and are assembled into a battery envelope (1, 3) in those states.
Claim 7
Dependent Claim
19 words
The method of claim 4, wherein said intercalary material is formed by the anions or cations of said electrolyte.
Claim 8
Dependent Claim
26 words
The method of claim 4 or 5, wherein after the removal of the intercalary material, the interlayer compound is press-molded into the form of a sheet.
Claim 9
Independent Claim
19 words
The method of any of claims 1 and 4 to 6, wherein the graphite is fibrous or powdery graphite.
Claim 10
Independent Claim
25 words
The method of any of claims 1 to 7, wherein the cations of said electrolyte are ions of an alkali metal or quaternary ammonium ions.
Claim 11
Independent Claim
22 words
The method of any of claims 1 to 8, wherein the anions of said electrolyte are halogen ions or halogen compound ions.
Claim 12
Independent Claim
22 words
The method of any of claims 1 to 9, wherein said anode and/or said cathode is in the form of a sheet.
Claim 13
Independent Claim
16 words
The method of any of claims 1 to 10, wherein said organic solvent is propylene carbonate.
References Cited (Backward Citations)
No citation records indexed.
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