A bifunctional ion-electron conducting interlayer for high energy density all-solid-state lithium-sulfur battery

JOURNAL OF POWER SOURCES

卷:351

Article

Zhu, Yuewu¹  Li, Jie¹  Liu, Jin¹ 

[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Hunan, Peoples R China

关键词: Ion-electron conductor;    All-solid-state;    Lithium-sulfur battery;    Active material utilization;    Battery configuration;   

DOI  :  10.1016/j.jpowsour.2017.03.072

来源: Elsevier

【 摘 要 】

A bifunctional ion-electron conducting layer is designed for all-solid-state lithium-sulfur battery. This layer consists of electronic conductor and solid polymer electrolyte that is intercalated between the cathode and electrolyte. By forming a gradient of electrons and lithium ions, the electrochemical performance and interfacial compatibility of the battery are obviously enhanced. When a pure sulfur powder is directly used as an active material of the cathode, the battery with the interlayer delivers the initial discharge capacity of 1457 mAh g(-1) and the discharge capacity of 792.8 mAh g(-1) after 50 cycles at 0.5 C and 80 degrees C, while the battery with the same cathode and without the interlayer only has the discharge capacity of 291.9 mAh g(-1) after the same number of cycles. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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