Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6469614 | Electrochemistry Communications | 2017 | 5 Pages |
â¢A novel layered ternary material, K0.67Ni0.17Co0.17Mn0.66O2 has been synthesized.â¢K0.67Ni0.17Co0.17Mn0.66O2 was introduced as a cathode for potassium ion batteries.â¢Highly reversible K+ intercalation/deintercalation is demonstrated.â¢A reversible discharge capacity of 76.5 mAh/g at 20 mA/g was obtained.
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 76.5Â mAh/g with average voltage of 3.1Â V and shows good cycling performance with capacity retention of 87% after 100Â cycles at 20Â mA/g. This work may give a new insight into developing cathode materials for potassium-ion batteries.
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