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Liquid metal as an efficient protective layer for lithium metal anodes in all-solid-state batteries
Carbon Energy ( IF 20.5 ) Pub Date : 2024-02-15 , DOI: 10.1002/cey2.462
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
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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 mA cm−2 and a significantly higher critical current density of 9.8 mA cm−2 at 25°C. In addition, a full battery assembled with a high-capacity composite LiNbO3@LiNi0.7Co0.2Mn0.1O2 (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.
更新日期:2024-02-17
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