期刊
NANO LETTERS
卷 17, 期 1, 页码 565-571出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b04695
关键词
Surface modification; ZnO interface; garnet solid-state electrolyte; Li metal batteries
类别
资金
- NASA Advanced Energy Storage System Project within the Game Changing Development Program of the Space Technology Mission Directorate
- Maryland NanoCenter
- Maryland NanoCenter AIMLab
Solid-state electrolytes are known for nonflammability, dendrite blocking, and stability over large potential windows. Garnet based solid-state electrolytes have attracted much attention for their high ionic conductivities and stability with lithium metal anodes. However, high-interface resistance with lithium anodes hinders their application to lithium metal batteries. Here, we demonstrate an ultrathin, conformal ZnO surface coating by atomic layer deposition for improved wettability of garnet solid-state electrolytes to molten lithium that significantly decreases the interface resistance to as low as similar to 20 Omega.cm(2). The ZnO coating demonstrates a. high reactivity with lithium metal, which is systematically characterized. As a proof-of-concept, we successfully infiltrated lithium metal into porous garnet electrolyte, which can potentially serve as a self-supported lithium metal composite anode having both high ionic and electrical conductivity for solid-state lithium metal batteries. The facile surface treatment method offers a simple strategy to solve the interface problem in solid-state lithium metal batteries with garnet solid electrolytes.
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