Liquid K–Na Alloy Anode Enables Dendrite‐Free Potassium Batteries | Zendy

Xue Leigang | Zendy; Gao Hongcai | Zendy; Zhou Weidong | Zendy; Xin Sen | Zendy; Park Kyusung | Zendy; Li Yutao | Zendy; Goodenough John B. | Zendy

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Liquid K–Na Alloy Anode Enables Dendrite‐Free Potassium Batteries

Author(s) -

Xue Leigang,

Gao Hongcai,

Zhou Weidong,

Xin Sen,

Park Kyusung,

Li Yutao,

Goodenough John B.

Publication year - 2016

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.201602633

Subject(s) - anode , electrolyte , battery (electricity) , materials science , cathode , potassium , alloy , battery capacity , interface (matter) , dendrite (mathematics) , chemical engineering , metallurgy , composite material , chemistry , thermodynamics , physics , power (physics) , geometry , mathematics , electrode , engineering , capillary number , capillary action

A K–Na liquid alloy allows a dendrite‐free high‐capacity anode ; its immiscibility with an organic liquid electrolyte offers a liquid–liquid anode–electrolyte interface. Working with a sodiated Na 2 MnFe(CN) 6 cathode, the working cation becomes K + to give a potassium battery of long cycle life with an acceptable capacity at high charge/discharge rates.

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