Electrode and secondary battery using the same
First Claim
1. An electrode which comprises a sheet of uni-directionally arranged carbon fibers extending be essentially in a single direction, which sheet is placed on a metal foil, wherein the electrode is rolled up so that the arranged direction of the carbon fibers is approximately perpendicular to the rolling direction of the electrode.
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Abstract
The invention relates to an electrode suitable for a chargeable/dischargeable secondary battery in which a carbonaceous material capable of doping and dedoping of lithium ions is used as a negative electrode active material, wherein carbon fibers are used as the carbonaceous material in a form of an uni-directionally arranged body or in combination of electrically conductive foil or fibers, and further relates to a secondary battery using the electrode. The invention enables to provide a secondary battery having high capacitance and high outputtng property.
29 Citations
16 Claims
- 1. An electrode which comprises a sheet of uni-directionally arranged carbon fibers extending be essentially in a single direction, which sheet is placed on a metal foil, wherein the electrode is rolled up so that the arranged direction of the carbon fibers is approximately perpendicular to the rolling direction of the electrode.
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16. An electrode which comprises a sheet of uni-directionally arranged carbon fibers extending essentially in a single direction, which sheet is placed on a metal foil, wherein the electrode is rolled up so that the arranged direction of the carbon fibers is approximately parallel to the rolled direction of the electrode.
Specification