Liquid metal as an efficient protective layer for lithium metal anodes in all-solid-state batteries

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作者
Shiqiang Zhou [1 ,2 ]
Mengrui Li [1 ,2 ]
Peike Wang [1 ,2 ]
Lukuan Cheng [1 ,2 ]
Lina Chen [1 ,2 ]
Yan Huang [1 ,2 ,3 ]
Boxuan Cao [1 ,2 ,3 ]
Suzhu Yu [1 ,2 ]
Qingju Liu [4 ]
Jun Wei [1 ,2 ,3 ]
机构
[1] Shenzhen Key Laboratory of Flexible Printed Electronics Technology, Harbin Institute of Technology
[2] School of Materials Science and Engineering, Harbin Institute of Technology
[3] State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology
[4] Yunnan Key Laboratory for Micro/Nano Materials and Technology, School of Materials and Energy, Yunnan
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中图分类号
TM912 [蓄电池]; TG178 [各种金属及合金的腐蚀、防腐与表面处理];
学科分类号
摘要
Lithium metal batteries with inorganic solid-state electrolytes have emerged as strong and attractive candidates for electrochemical energy storage devices because of their high-energy content and safety. Nonetheless, inherent challenges of deleterious lithium dendrite growth and poor interfacial stability hinder their commercial application. Herein, we report a liquid metal-coated lithium metal(LM@Li) anode strategy to improve the contact between lithium metal and a Li6PS5Cl inorganic electrolyte. The LM@Li symmetric cell shows over 1000 h of stable lithium plating/stripping cycles at 2 m A cm-2and a significantly higher critical current density of 9.8 m A cm-2at 25°C. In addition, a full battery assembled with a high-capacity composite LiNbO3@-Li Ni0.7Co0.2Mn0.1O2(LNO@NCM721) cathode shows stable cycling performance. Experimental and computational results have demonstrated that dendrite growth tolerance and physical contact in solid-state batteries can be reinforced by using LM interlayers for interfacial modification.
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页码:223 / 233
页数:11
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