Title:
リチウムイオン二次電池
Document Type and Number:
Japanese Patent JP5664941
Kind Code:
B2
Abstract:
The lithium-ion secondary battery 100 includes: a positive electrode current collector 221; a positive electrode active material layer 223 held on the positive electrode current collector 221; a negative electrode current collector 241; and a negative electrode active material layer 243 that is held on the negative electrode current collector 241 and covers the positive electrode active material layer 223. A separator substrate 265 formed of a porous resin sheet is disposed between the positive electrode active material layer 223 and the negative electrode active material layer 243. The separator substrate 265 holds a heat-resistant layer 266. The heat-resistant layer 266 contains an inorganic filler, a binder and a thickener. The weight ratio P between the binder and the thickener (binder/thickener) in the heat-resistant layer is P<7.2.
Inventors:
上木 智善
島村 治成
福本 友祐
島村 治成
福本 友祐
Application Number:
JP2013506905A
Publication Date:
February 04, 2015
Filing Date:
March 28, 2011
Export Citation:
Assignee:
トヨタ自動車株式会社
International Classes:
H01M10/0525; H01M10/058; H01M50/451; H01M50/491
Domestic Patent References:
| JP2011171290A | 2011-09-01 |
Other References:
JPN6014032717; はじめての二次電池技術 初版, 2001, ｐｐ． １３５-１３７, 株式会社工業調査会
JPN6014032717; はじめての二次電池技術 初版, 2001, ｐｐ． １３５-１３７, 株式会社工業調査会
JPN6014032717; はじめての二次電池技術 初版, 2001, ｐｐ． １３５-１３７, 株式会社工業調査会
Attorney, Agent or Firm:
Makoto Abe
Michiko Oi
Hiroaki Yamane
Michiko Oi
Hiroaki Yamane