Composite electrolyte membranes incorporating viscous copolymers with cellulose for high performance lithium-ion batteries
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- 作者：Jinfang Zhang ; Cheng Ma ; Qingbing Xia ; Jiatu Liu ; Zhengping Ding ; Mingquan Xu ; Libao Chen ; Weifeng Wei ; weifengwei@csu.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Lithium-ion batteries ; Composite electrolyte membrane ; Poly (ethylene oxide) ; Interfacial contact ; Cycling performance
- 刊名：Journal of Membrane Science
- 出版年：2016
- 出版时间：1 January 2016
- 年：2016
- 卷：497
- 期：Complete
- 页码：259-269
- 全文大小：3405 K
文摘
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A novel composite electrolyte membrane, consisting of a viscous PEGMEM-co-SMA copolymer, lithium salt and cellulose matrix, has been prepared as a new class of electrolyte for high performance lithium-ion batteries.
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The composite electrolyte membrane exhibits a wide electrochemical stability window (>5 V vs. Li/Li+) and improved thermal stability up to 315 °C.
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The interfacial resistance (Rintf ) of the fresh cell based on this composite electrolyte membrane is extremely low (3.8 惟 cm−2) owing to the viscous flow state of the PEGMEM-co-SMA copolymer at 80 °C.
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The Li/LiFePO4 cells based on this composite electrolyte membrane deliver a discharge capacity as high as 156.9 mAh g−1 with a current density of 1 C at 80 °C.