Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 82, Issue -, Pages 150-154Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2017.08.008
Keywords
Potassium-ion batteries; Cathode; Ternary material; K0.67Ni0.17Co0.17Mn0.66O2
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Funding
- National Natural Science Foundation of China [51374056, 51404055, 51674068]
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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 76.5 mAh/g with average voltage of 3.1 V and shows good cycling performance with capacity retention of 87% after 100 cycles at 20 mA/g. This work may give a new insight into developing cathode materials for potassium-ion batteries.
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