Sumitomo Seika Chemicals Co., Ltd.

Osaka Research Institute of Industrial Science and Technology

Ryo Miyabara

Kiyoshi Nishioka

Shuichi Karashima

Yukiyasu Kashiwagi

Mari Yamamoto

Masashi Saitoh

Masanari Takahashi

Yasuyuki Kobayashi

Shingo Ikeda

General Formula (I) Provided is an all solid state secondary-battery additive comprising a polyalkylene carbonate (I) represented by general formula (I), and by providing such additive, properties such as the charge-discharge capacity and interfacial resistance of an all-solid-state secondary battery are improved. (In general formula (I), Rand Rare each a C1-10 chain-like alkylene group or C3-10 cycloalkylene group, m is 0, 1, or 2 and n is an integer of 10 to 15000, and each R, Rand m in the polyalkylene carbonate (I) chain is independently the same or different.)

All solid state secondary-battery additive, all-solid-state secondary battery, and method for producing same

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Osaka, Japan

Ryo Miyabara