材料科学
汞齐(化学)
接口(物质)
金属
自愈
复合材料
冶金
电极
毛细管数
医学
病理
物理化学
化学
毛细管作用
替代医学
作者
Ye Fan,Tao Tao,Yuxuan Gao,Chao Deng,Baozhi Yu,Ying Chen,Sheng‐Guo Lu,Shaoming Huang
标识
DOI:10.1002/adma.202004798
摘要
Poor cyclability and safety concerns caused by the uncontrollable dendrite growth and large interfacial resistance severely restrict the practical applications of metal batteries. Herein, a facile, universal strategy to fabricate ceramic and glass phase compatible, and self-healing metal anodes is proposed. Various amalgam-metal anodes (Li, Na, Zn, Al, and Mg) show a long cycle life in symmetric cells. It has been found that liquid Li amalgam shows a complete wetting with the surface of lanthanum lithium titanate electrolyte and a glass-phase solid-state electrolyte. The interfacial compatibility between the lithium metal anode and solid-state electrolyte is dramatically improved by using an in situ regenerated amalgam interface with high electron/ion dual-conductivity, obviously decreasing the anode/electrolyte interfacial impedance. The lithium-amalgam interface between the metal anode and electrolyte undergoes a reversible isothermal phase transition between solid and liquid during the cycling process at room temperature, resulting in a self-healing surface of metal anodes.
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