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US 12,749,676 B2Granted
Positive active material for energy storage device, positive electrode for energy storage device, energy storage device, and energy storage apparatus
AssigneeGS Yuasa International Ltd.
InventorsDaisuke Endo, Shinya Otani, Satoshi Hoshino
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Abstract
In a positive active material for energy storage device according to an aspect of the present invention, at least part of a surface is coated with carbon, a ratio of full width at half maximum of a peak in a charged state to a peak in a discharged state is 0.85 or more and 1.13 or less in a peak corresponding to a (131) plane observed by powder X-ray diffraction using CuKα radiation, and the positive active material for energy storage device is a compound represented by the following Formula 1. LiFexMn(1-x)PO4 (0≤x≤1) 1
Claims7
A positive active material for energy storage device, wherein
- at least part of a surface is coated with carbon,
- a ratio of full width at half maximum of a peak in a charged state to a peak in a discharged state is 0.85 or more and 1.13 or less in a peak corresponding to a (131) plane observed by powder X-ray diffraction using CuKα radiation, and
- the positive active material for energy storage device is a compound represented by the following formula:
- LiFexMn(1-x)PO4 (0≤x≤1).
1 more element
Dependencies are inferred from the claim text.