K0.67Ni0.17Co0.17Mn0.66O2: A cathode material for potassium-ion battery
K0.67Ni0.17Co0.17Mn0.66O2: A cathode material for potassium-ion battery
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DOI：
10.1016/j.elecom.2017.08.008
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发表时间：
2017
影响因子：
5.4
通讯作者：
王志远;刘彩玲;郝爱民;罗绍华;翟玉春
中科院分区：
文献类型：
--
作者：
王志远;刘彩玲;郝爱民;罗绍华;翟玉春
采用共沉淀辅助固相法制备了一种新型层状三元材料k0.67 ni0.17 co0.17 mn0.66 o2，并首次对其作为钾离子电池正极材料进行了进一步评价。证明了该材料具有高度可逆的K+嵌入/脱嵌过程。在平均电压为3.1 V时，其可逆容量为76.5 mAh/g，在20 mA/g下循环100次后容量保持率为87%，具有良好的循环性能。这项工作可能为钾离子电池正极材料的开发提供新的思路。
A novel layered ternary material K0.67Ni0.17Co0.17Mn0.66O2has 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.