发明名称 |
Graphitic electrode material for secondary battery and process for production thereof |
摘要 |
A graphitic electrode material suitable for use in a non-aqueous solvent-type secondary battery is provided. The graphitic material is characterized by an average (002)-plane spacing d002 of 0.336-0.345 nm, a crystallite size along c-axis Lc(002) of 15-60 nm, and a lattice strain epsilon of at most 2.0x10-2 nm-1 as measured by X-ray diffraction method. The graphitic material may suitably be formed through a process including the steps of: thermally polymerizing a condensed polycyclic aromatic compound in the presence of a Lewis acid catalyst to form a polymerizate, and heat-treating the polymerizate at 2100 DEG -2600 DEG C. under a reduced pressure or in an inert gas atmosphere. The graphitic electrode material exhibits large doping and dedoping capacities which provide only a small difference therebetween (i.e., irreversible capacity) and cause only a small decrease at the time of quick charging and discharging.
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申请公布号 |
US5721071(A) |
申请公布日期 |
1998.02.24 |
申请号 |
US19960718939 |
申请日期 |
1996.09.24 |
申请人 |
KUREHA KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
SONOBE, NAOHIRO;MASUKO, JIRO;HOSHI, AKIO |
分类号 |
C01B31/02;C01B31/04;C04B35/524;D01F9/24;H01M4/02;H01M4/04;H01M4/58;H01M10/40;(IPC1-7):H01M4/58 |
主分类号 |
C01B31/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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