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US 5,344,726 AGranted
Carbon anode for secondary battery
AssigneeSharp Kabushiki Kaisha
InventorsHideaki Tanaka, Takehito Mitate, Hiroyuki Kitayama, Kuzuo Yamada
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Abstract
A carbon anode for a secondary battery in which a carbon active material of the carbon anode is covered with an amorphous carbon.
Claims3
A carbon anode for a secondary battery comprising a core of highly crystalline carbon covered with a layer of amorphous carbon:
- in which the highly crystalline carbon has an interlayer distance in the c-axis direction of from 0.335 to 0.340 nm and a ratio of the peak value at 1360 cm.sup.-1 to the peak value at 1580 cm.sup.-1 in argon ion laser Raman spectra is less than 0.4.
Dependencies are inferred from the claim text.