Sodium insertion cathode material Na-0.67[Ni0.4Co0.2Mn0.4]O-2 with excellent electrochemical properties
Sodium insertion cathode material Na-0.67[Ni0.4Co0.2Mn0.4]O-2 with excellent electrochemical properties
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钠嵌入正极材料Na-0.67[Ni0.4Co0.2Mn0.4]O-2具有优异的电化学性能
DOI：
10.1016/j.electacta.2016.04.067
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发表时间：
2016
影响因子：
6.6
通讯作者：
Chen Chun-Hua
中科院分区：
文献类型：
--
作者：
Sun Xin;Ji Xiao-Yang;Xu Hao-Yang;Zhang Chen-Yu;Shao Yu;Zang Yong;Chen Chun-Hua
合成了钠离子电池正极材料层状三元氧化物Na 0. 67 [Ni 0. 4Co 0. 2 Mn 0. 4] O2。在合成过程中采用液氮淬冷工艺，得到了具有P2-O3混合结构的Na0.67[Ni0.4Co0.2Mn0.4] O2粉体，并对其进行了表征。Na//Na0.67[Ni0.4Co0.2Mn0.4] O2电池提供167 mA h g− 1的可逆容量，并表现出优异的循环和倍率性能，而没有异常的初始库仑效率。
Layered-structured ternary oxide Na0.67[Ni0.4Co0.2Mn0.4]O2is synthesized as cathode material for sodium-ion batteries. Using a liquid nitrogen quenching process during the synthesis procedure, a Na0.67[Ni0.4Co0.2Mn0.4]O2powder with a mixed P2-O3 structure is obtained, and then characterized. The Na//Na0.67[Ni0.4Co0.2Mn0.4]O2cell delivers a reversible capacity of 167 mA h g−1and exhibits excellent cycling and rate performances without abnormal initial coulombic efficiency.