Electrochemistry Communications
Electrochemistry Communications
5 years ago

K0.67Ni0.17Co0.17Mn0.66O2: A cathode material for potassium-ion battery

K0.67Ni0.17Co0.17Mn0.66O2: A cathode material for potassium-ion battery
A novel layered ternary material K0.67Ni0.17Co0.17Mn0.66O2 has been fabricated via a co-precipitation assisted solid-phase method and further evaluated as a cathode for potassium-ion batteries for the first time. Highly reversible K+ intercalation/deintercalation is demonstrated in this material. It delivers a reversible capacity of 76.5mAh/g with average voltage of 3.1V and shows good cycling performance with capacity retention of 87% after 100cycles at 20mA/g. This work may give a new insight into developing cathode materials for potassium-ion batteries.

Publisher URL: www.sciencedirect.com/science

DOI: S1388248117302217

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