Carbonaceous electrode material for secondary battery

Details Carbonaceous electrode material for secondary battery Carbonaceous electrode material for secondary battery

1994-02-22

1996-12-24

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429194, 423445R, H01M 402

Patent

active

055872557

ABSTRACT:
A carbonaceous electrode having improved capacities of doping and dedoping a cell active substance, such as lithium, and suitable for a non-aqueous solvent-type secondary battery, is constituted by a carbonaceous material having a specific microtexture. The carbonaceous material is characterized by having an average (002)-plane spacing of at least 0.365 nm according to an X-ray diffraction test, and by providing a residual carbonaceous substance showing an average (002) plane-spacing of at most 0.350 nm according to an X-ray diffraction test when the carbonaceous material is treated with an H.sub.2 O--N.sub.2 equi-molar gaseous mixture at 900.degree. C. up to a weight reduction of 60%.

REFERENCES:
patent: 4702977 (1987-10-01), Hiratsuka et al.
patent: 4959281 (1990-09-01), Nishi et al.
patent: 5176969 (1993-06-01), Miyabayashi et al.
Abstract of JP-4319265, Masayuki et al., "Non-aqueous Electrolyte Secondary Battery", Oct. 11, 1992.
Abstract of JP-521065, Norio et al., "Lithium Secondary Battery", Jan. 29, 1993.
Abstract of JP-6363193463, Yuichi et al., "Nonaqueous Solvent Secondary Battery", Oct. 8, 1988.

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