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US 8,894,964 B2Granted
Crystalline carbonaceous material with controlled interlayer spacing and method of preparing same
AssigneeSamsung SDI Co., Ltd.
InventorsBok-Hyun Ka, Kyeu-Yoon Sheem, Da-Un Han, Hyun-Uk Jo, Sumihito Ishida, Eui-Hwan Song
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Abstract
A crystalline carbon material with controlled interlayer spacing and a method of manufacturing the crystalline carbon material are disclosed. The crystalline carbon material has peaks of a (002) plane at 2θ=23°±5.0° and 2θ=26.5°±1.0° when X-ray diffraction is measured using a CuKα ray. The peak height at 2θ=23°±5.0° is higher than the one at 2θ=26.5°±1.0°.
Claims16
An energy storage device, comprising:
- a crystalline carbon material comprising a crystal structure including a plurality of atom layers with a controlled interlayer spacing between two adjacent atom layers formed in a crystal plane (002), the controlled interlayer spacing represented by peaks of the crystal plane (002), measured by a X-ray diffraction using CuKα ray, at scattering angles of the CuKα ray 23°±5.0° and 26.5°±1.0°, with the peak height at the scattering angle of the CuKα ray 23°±5.0° being higher than the one at the scattering angle 26.5°±1.0°, and
- the crystalline carbon material has a specific surface area ranging from 21.8 m2/g to 58.4 m2/g;
- the crystalline carbon material has surface pH ranging from 5 to 8.
An energy storage device, comprising:
- a crystalline carbon comprising:
- a plurality of atom layers with a controlled interlayer spacing between two adjacent atom layers, the controlled interlayer spacing comprising a first interlayer spacing and a second interlayer spacing where the second interlayer spacing is larger than the first interlayer spacing, and the second and first interlayer spacings respectively represented by peaks of a crystal plane (002), measured by X-ray diffraction using CuKα ray, at scattering angles of the CuKα ray 23°±5.0° and 26.5°±1.0°, and
- the crystalline carbon has a specific surface area ranging from 21.8 m2/g to 58.4 m2/g;
- the crystalline carbon has surface pH ranging from 5 to 8.
1 more element
Dependencies are inferred from the claim text.