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Quan Li1 Hong Pan1 Tian Yi2 Bao Quan1 Xue Wang1 Howard Wang3 Xi Qian Yu1 Hong Li1

1, Institute of Physics, Chinese Academy of Sciences, Beijing, , China
2, Institute of High Energy Physics, Chinese Academy of Sciences, Dongguan, Guangdong, China
3, Department of Materials Science and Engineering, University of Maryland, College Park, Maryland, United States

Lithium metal anodes have been considered as the ultimate choice for anode electrodes for rechargeable batteries because of the high theoretical specific capacity (3860 mAh/g), the lowest electrode potential (3.040 V versus standard hydrogen electrode) and low density (0.534 g/cm3). The safety problem caused by the uncontrollable lithium dendrite and the poor cycling performance has limited the application of lithium second batteries several decades. Here the lithium plating/stripping (P/S) behavior are investigated respectively with non-aqueous electrolyte and solid-state electrolyte by combining interfacial modification and ordered three-dimensional structure methods. Lithium plating/stripping (P/S) behavior is regulated by both the interfacial conductivity and distribution of electric field induced by the structure. It was demonstrated that homogenous surface electronic conductivity and ordered three-dimensional structure could be beneficial to significantly improve lithium plating-stripping behavior and reach a high performance lithium metal anode.

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