Room-temperature liquid metal-based anodes for high-energy potassium-based electrochemical devices

Lei Qin; Wei Yang; Wei Lv; Liang Liu; Yu Lei; Wei Yu; Feiyu Kang; Jang-Kyo Kim; Dengyun Zhai; Quan-Hong Yang

doi:10.1039/C8CC03545H

Room-temperature liquid metal-based anodes for high-energy potassium-based electrochemical devices†

Lei Qin,‡^ab Wei Yang,‡^a Wei Lv,^a Liang Liu,^c Yu Lei,^a Wei Yu,^a Feiyu Kang,^a Jang-Kyo Kim,

^b Dengyun Zhai

*^a and Quan-Hong Yang

*^d

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* Corresponding authors

^a Engineering Laboratory for Functionalized Carbon Materials, Shenzhen Key Laboratory for Graphene-Based Materials, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
E-mail: zhaidy0404@sz.tsinghua.edu.cn

^b Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China

^c Department of Physics, Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China

^d School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
E-mail: qhyangcn@tju.edu.cn

Abstract

A liquid Na–K alloy is adsorbed onto a super-aligned carbon nanotube membrane (denoted CM) at room temperature, which is driven by capillary force, fabricating a flexible CM@NaK membrane. The anode directly using the CM@NaK membrane exhibits a smooth electrode–electrolyte (liquid–liquid) interface, contributing to fast ion transport and a dendrite-free stripping/plating process.

Chemical Communications

Room-temperature liquid metal-based anodes for high-energy potassium-based electrochemical devices†

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Room-temperature liquid metal-based anodes for high-energy potassium-based electrochemical devices

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