Title:
Accumulating electricity device
Document Type and Number:
Japanese Patent JP5973250
Kind Code:
B2
Abstract:
An object is to provide graphene which has high conductivity and is permeable to ions of lithium or the like. Another object is to provide, with use of the graphene, a power storage device with excellent charging and discharging characteristics. Graphene having a hole inside a ring-like structure formed by carbon and nitrogen has conductivity and is permeable to ions of lithium or the like. The nitrogen concentration in graphene is preferably higher than or equal to 0.4 at. % and lower than or equal to 40 at. %. With use of such graphene, ions of lithium or the like can be preferably made to pass; thus, a power storage device with excellent charging and discharging characteristics can be provided.
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Inventors:
Takuya Hirohashi
Teppei Oguni
Teppei Oguni
Application Number:
JP2012138897A
Publication Date:
August 23, 2016
Filing Date:
June 20, 2012
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H01M4/62; H01G11/24; H01M10/052; H01M10/0566
Foreign References:
| WO2011141486A1 | ||||
| WO2011069348A1 | ||||
| WO2012075960A1 |
Other References:
Pramanik, Panchanan et al.,A Novel Method for Preparation of Graphene and Study of Mechanism of It's Reduction,World Journal of Engineering,2010年,Vol. 7, Supplement 2,Page 387
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