Tdk Corporation

Masayuki Muroi

Hiroshi Sato

Tomohiro Yano

Tetsuya Ueno

Hisaji Oyake

Hiroaki Takahata

This solid-state lithium ion rechargeable battery includes a laminated body which includes a positive electrode layer, a negative electrode layer, and a solid electrolyte sandwiched between the positive electrode layer and the negative electrode layer, and a liquid repellent film which is provided to be in contact with the laminated body, in which the liquid repellent film contains a fluorine element and a carbon element, and has a contact angle of 30&#xb0; or more when an acetic acid aqueous solution is dropped thereon.

All-solid-state lithium ion secondary battery having fluorine and carbon-containing liquid repellent film and mounted body

The present invention aims to provide an all-solid-state lithium ion secondary battery having a high reliability which does not have a decrease in battery capacity due to absorption of moisture in the air. The all-solid-state lithium ion secondary battery is provided with a battery body having an electrolyte layer between a positive electrode layer and a negative electrode layer, a pair of terminal electrodes respectively connected to the positive electrode layer and the negative electrode layer at both end portions of the battery body, and a moisture-proof layer disposed on surfaces excluding the surfaces to be the terminal electrodes, wherein the moisture-proof layer contains a cured product of a composition containing a polymer compound and metal compound particles.

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Tokyo, Japan

Masayuki Muroi