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Title:
NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND MATERIAL FOR USE IN SAME
Document Type and Number:
WIPO Patent Application WO/2018/128139
Kind Code:
A1
Abstract:
The lithium ion secondary battery according to one embodiment of the present invention comprises, in an electrode, an electrode active material, a conductive auxiliary, and a binding material. The binding material is formed from: a binding component that binds the conductive auxiliary and forms conduction paths between the electrode active material; and a melting point depressant that depresses the melting point of the binding component. The melting point depressant is a PTC-functionality-imparting component that reduces the melting start temperature of the binding material and thereby gives the lithium ion secondary battery PTC functionality. When a conductive foreign substance has generated short circuit heat inside the lithium ion secondary battery, the binding material around the foreign substance is melted, and the conduction paths are cut off.

Inventors:
YAMAMOTO Shinji (Inc. 580-32, Nagaura, Sodegaura-sh, Chiba 65, 〒2990265, JP)
MIZUNO Yu (Inc. 580-32, Nagaura, Sodegaura-sh, Chiba 65, 〒2990265, JP)
ENDO Yuri (Inc. 580-32, Nagaura, Sodegaura-sh, Chiba 65, 〒2990265, JP)
Application Number:
JP2017/046855
Publication Date:
July 12, 2018
Filing Date:
December 27, 2017
Export Citation:
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Assignee:
MITSUI CHEMICALS, INC. (5-2 Higashi-Shimbashi 1-chome, Minato-ku Tokyo, 22, 〒1057122, JP)
International Classes:
H01M4/62; C08L27/16; C08L101/02; H01M10/0566
Domestic Patent References:
WO2016185925A12016-11-24
WO1999034469A11999-07-08
Foreign References:
JP2016170937A2016-09-23
JPH10172573A1998-06-26
JP2011003529A2011-01-06
JP2010157512A2010-07-15
JP2003036838A2003-02-07
JPS5032800B11975-10-24
Other References:
KOBAYASHI SATORUTASAKA SHIGERU ET AL.: "KOBUNSHI RONBUNSHU", JAPANESE JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY), vol. 44, no. 9, 1987, pages 695 - 699
YASUI EIJIYOSHIKAWA HITOSHI: "Nihon Gomu Kyoukai-shi", JOURNAL OF THE SOCIETY OF RUBBER SCIENCE AND TECHNOLOGY, JAPAN, vol. 66, no. 11, 1993, pages 800 - 811
HANADA TOMOMIANDO MINORU: "Tokyo Kasei Gakuin Daigaku Kiyou", JOURNAL OF TOKYO KASEI GAKUIN UNIVERSITY, 1994, pages 31 - 34
HANADA TOMOMIANDO MINORU: "Tokyo Kasei Gakuin Daigaku Kiyou", JOURNAL OF TOKYO KASEI GAKUIN UNIVERSITY, 1995, pages 93 - 98
HANADA TOMOMIANDO MINORU: "Tokyo Kasei Gakuin Daigaku Kiyou", JOURNAL OF TOKYO KASEI GAKUIN UNIVERSITY, 1996, pages 71 - 74
HORIBE HIDEOBABA FUMIAKI ET AL.: "Nihon Kagakukai-shi", JOURNAL OF THE CHEMICAL SOCIETY OF JAPAN, 2000, pages 121 - 126
HANADA TOMOMIANDO MINORU: "Tokyo Kasei Gakuin Daigaku Kiyou", JOURNAL OF TOKYO KASEI GAKUIN UNIVERSITY, 2001, pages 77 - 80
SAITO TAKUTOYODA AKINORI: "KOBUNSHI RONBUNSHU", JAPANESE JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY, vol. 68, no. 6, 2011, pages 353 - 369
Attorney, Agent or Firm:
AYATA&ASSOCIATES (203 Royal-Chateau-Kawasaki, 22-2 Omiya-cho Saiwai-ku, Kawasaki-sh, Kanagawa 14, 〒2120014, JP)
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