Accumulating electricity device - Semiconductor Energy Laboratory Co., Ltd.

Title:

Accumulating electricity device

Document Type and Number:

Japanese Patent JP6218349

Kind Code:

B2

Abstract:

Provided are an electrode for a power storage device having much better charge/discharge characteristics and a power storage device using the electrode. A plurality of cavities is provided in a surface of an active material layer over a current collector. A graphene covering the active material layer facilitates rapid charge/discharge and prevents breakdown of the current collector caused by charge/discharge. With improved charge/discharge characteristics, an electrode for a power storage device which does not easily deteriorate and a power storage device using the electrode can be provided.

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Inventors:

Go Nagata
Ryota Tajima
Teppei Oguni
Shunpei Yamazaki

Application Number:

JP2011217911A

Publication Date:

October 25, 2017

Filing Date:

September 30, 2011

Export Citation:

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Assignee:

Semiconductor Energy Laboratory Co., Ltd.

International Classes:

H01M4/134; H01M4/13; H01M50/469

Domestic Patent References:

JP2008159589A
JP2010275186A

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