- Liquid K-Na Alloy Anode Enables Dendrite-Free Potassium Batteries.
Liquid K-Na Alloy Anode Enables Dendrite-Free Potassium Batteries.
Advanced materials (Deerfield Beach, Fla.) (2016-09-16)
Leigang Xue, Hongcai Gao, Weidong Zhou, Sen Xin, Kyusung Park, Yutao Li, John B Goodenough
PMID27628913
ABSTRACT
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 Na2 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.
MATERIALS