Uniform lithium deposition induced by copper phthalocyanine additive for durable lithium anode in lithium-sulfur batteries

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外文摘要：Copper phthalocyanine(CuPc)is adopted as an electrolyte additive to stabilize lithium anode for lithium-sulfur(Li-S)batteries.CuPc with a planar molecular structure and lithiophilic N-containing group,is likely to be adsorbed on the surface of Li anode to form a coating layer,which can restrict the direct contact between Li anode and solvents,and guide the uniform deposition of Li+ions.The Li‖Li symmetric cells demonstrate a stable cycle performance,and Li‖Cu cells show high Coulombic efficiencies.In Li-S batter-ies,the formed stable solid-electrolyte interface(SEI)film containing copper sulfides can protect Li anode from the polysulfide corrosion and side reactions with the electrolyte,leading to the compact and smooth surface morphology of Li anode.Therefore,the Li-S batteries with CuPc additive deliver much higher ca-pacity,better cycle performance and rate capability as compared to the one without CuPc additive.

外文关键词：

Copper phthalocyanineElectrolyte additiveStable SEI filmStabilized Li anodeLithium-sulfur batteries

作者：

Ting Hu、Yuxuan Guo、Yixuan Meng、Ze Zhang、Ji Yu、Jianxin Cai、Zhenyu Yang

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作者单位：

Key Laboratory of Jiangxi Province for Environment and Energy Catalysis,School of Chemistry and Chemical Engineering,Nanchang University,Nanchang 330031,China

基金：

国家自然科学基金国家自然科学基金江西省自然科学基金江西省自然科学基金江西省自然科学基金江西省自然科学基金Key Laboratory of Jiangxi Province for Environment and Energy Catalysis

项目编号：

222690132226300920224ACB21300120202ACB20200420213BCJ2202420212BBE5305120181BCD40004

出版年：

2024

DOI：

10.1016/j.cclet.2023.108603

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCD

影响因子：0.771

ISSN：1001-8417

年,卷(期)：2024.35(5)

参考文献量56