非水電解質電池、組電池及びバッテリーシステム

Title:

非水電解質電池、組電池及びバッテリーシステム

Document Type and Number:

Japanese Patent JP6921484

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte battery which enables the materialization of a battery system capable of showing a high energy density and superior charge/discharge cycle characteristics.SOLUTION: A nonaqueous electrolyte battery 1 is provided according to an embodiment, which comprises: a positive electrode 6; a negative electrode 7; and a nonaqueous electrolyte. The positive electrode 6 has a positive electrode layer 62 including a positive electrode active material. The positive electrode active material has a spinel type crystal structure, and includes an aluminum-containing lithium manganate represented by the following general formula: LiMnAlMO. In the positive electrode layer 62, the content of the positive electrode active material is 91 wt% or more and less than 96 wt% to a weight of the positive electrode layer 62. In the nonaqueous electrolyte battery, the proportion of a capacity C2 to a capacity C1 is 92 to 99%, where the capacity C1 is a charging capacity when the nonaqueous electrolyte battery 1 is charged from a voltage of 1.5 V to a voltage of 3 V, and the capacity C2 is a charging capacity when the nonaqueous electrolyte battery 1 is charged from 2.3 V to 2.7 V.SELECTED DRAWING: Figure 1

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Inventors:

Teruaki Yoshikawa
Yasuaki Murashi
Nao Nishio
Toru Yajima

Application Number:

JP2016097340A

Publication Date:

August 18, 2021

Filing Date:

May 13, 2016

Export Citation:

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Assignee:

Toshiba Corporation

International Classes:

H01M10/0525; H01M4/131; H01M4/485; H01M4/505; H01M4/525; H01M10/058; H01M10/44; H01M16/00

Domestic Patent References:

JP2012094460A
JP2007294164A
JP2007273405A
JP2013041844A
JP2012190569A

Foreign References:

WO2013108841A1
WO2014142078A1
US20150050527

Attorney, Agent or Firm:

Kurata Masatoshi
Nobuhisa Nogawa
Takashi Mine
Naoki Kono

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