Title:
蓄電装置用正極活物質の作製方法
Document Type and Number:
Japanese Patent JP6651566
Kind Code:
B2
Abstract:
An energy storage device having high capacity per weight or volume and a positive electrode active material for the energy storage device are manufactured. A surface of a main material included in the positive electrode active material for the energy storage device is coated with two-dimensional carbon. The main material included in the positive electrode active material is coated with a highly conductive material which has a structure expanding two-dimensionally and whose thickness is ignorable, whereby the amount of carbon coating can be reduced and an energy storage device having capacity close to theoretical capacity can be obtained even when a conduction auxiliary agent is not used or the amount of the conduction auxiliary agent is extremely small. Accordingly, the amount of carbon coating in a positive electrode and the volume of the conduction auxiliary agent can be reduced; consequently, the volume of the positive electrode can be reduced.
Inventors:
Kuniharu Nomoto
Takuya Miwa
Masaki Yamakaji
Takahiro Kawakami
Takuya Miwa
Masaki Yamakaji
Takahiro Kawakami
Application Number:
JP2018053057A
Publication Date:
February 19, 2020
Filing Date:
March 20, 2018
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H01G11/06; H01G11/24; H01G11/36; H01G11/86; H01M4/136; H01M4/36; H01M4/58
Domestic Patent References:
| JP2008257894A | ||||
| JP2010040357A | ||||
| JP2013538933A | ||||
| JP2013542903A | ||||
| JP2010092599A |
Foreign References:
| CN101752561A |