Ethylene carbonate (EC)-propyl acetate (PA) based electrolyte for low temperature performance of li-ion rechargeable batteries

Hiroki Nagano, Hackho Kim, Suguru Ikeda, Seiji Miyoshi, Motonori Watanabe, Tatsumi Ishihara

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)

抄録

Charge-discharge performance at -30°C was studied using low-viscosity ester solvents (propyl acetate (PA), propyl propionate (PP), and ethyl propionate (EP)) as electrolyte for improving the low-temperature performance of li-ion rechargeable batteries. Among the studied ester, PA based electrolyte showed the most superior cycle stability. EC-PA based electrolyte increased the discharge capacity of the cell at -30°C by 6% compared to the EC-DEC based electrolyte. Although the cell capacity at low temperature was increased, favorable solid electrolyte interface (SEI) may not be formed and the cycle stability was decreased in the cell using PA component as the electrolyte. Using an electrolyte additive for SEI formation in combination with PA based electrolyte, the low temperature discharge capacity and cycle stability were much increased which was strongly demanded for electric vehicle application.

本文言語英語
ページ(範囲)2202-2209
ページ数8
ジャーナルBulletin of the Chemical Society of Japan
94
9
DOI
出版ステータス出版済み - 2021

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)

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