Title:
Accumulating electricity device
Document Type and Number:
Japanese Patent JP6087101
Kind Code:
B2
Abstract:
A power storage device a positive electrode including a positive electrode active material layer and a negative electrode including a negative electrode active material layer. The positive electrode active material layer includes a plurality of particles of x[Li2MnO3]-(1−x)[LiCo1/3Mn1/3Ni1/3O2] (obtained by assigning 0.5 to x, for example) which is a positive electrode active material, and multilayer graphene with which the plurality of particles of the positive electrode active material are at least partly connected to each other. In the multilayer graphene, a plurality of graphenes are stacked in a layered manner. The graphene contains a six-membered ring composed of carbon atoms, a poly-membered ring which is a seven or more-membered ring composed of carbon atoms, and an oxygen atom bonded to one or more of the carbon atoms in the six-membered ring and the poly-membered ring, which is a seven or more-membered ring.
Inventors:
Takahiro Kawakami
Todoroki Hiroshi
Teppei Oguni
Go Nagata
Shunpei Yamazaki
Todoroki Hiroshi
Teppei Oguni
Go Nagata
Shunpei Yamazaki
Application Number:
JP2012221174A
Publication Date:
March 01, 2017
Filing Date:
October 03, 2012
Export Citation:
Assignee:
Semiconductor Energy Laboratory Co., Ltd.
International Classes:
H01M4/131; H01M4/505; H01M4/525; H01M4/62
Domestic Patent References:
| JP2010275186A |
Foreign References:
| US20110121240 | ||||
| WO2011105832A2 |