Propelling electrochemical kinetics of transition metal oxide for high-rate lithium-ion battery through in situ deoxidation.
Propelling electrochemical kinetics of transition metal oxide for high-rate lithium-ion battery through in situ deoxidation.
复制标题
通过原位脱氧提升过渡金属氧化物用于高倍率锂离子电池的电化学动力学。
DOI：
10.1016/j.jcis.2020.11.016
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发表时间：
2020-11
影响因子：
9.9
通讯作者：
Jing Peng;Weicai Zhang;Mingtao Zheng;Hang Hu;Yong Xiao;Yingliang Liu;Yeru Liang
中科院分区：
文献类型：
--
作者：
Jing Peng;Weicai Zhang;Mingtao Zheng;Hang Hu;Yong Xiao;Yingliang Liu;Yeru Liang
To engineer advanced anodes for high-rate lithium-ion battery, rational structural design with insightful understanding of rapid reaction kinetics is important and still highly desirable. In this work, a high-temperaturein situdeoxidation strategy is used to propel electrochemical kinetics of NiO through incorporating an intrinsic Ni component. Both theoretical calculation and experimental study demonstrate that the Ni-NiO heterojunction significantly enhances the electronic conductivity and ion diffusion properties. Accordingly, the lithium-ion battery modified with the heterostructured Ni-NiO shows remarkably improved charge transfer efficiency and rate performance, substantially outperforming many reported NiO-based anodes. This work opens up the exploration of heterostructured metal compounds as kinetic regulators for high-rate lithium-ion battery and also enlightens the understanding of defect chemistry in propelling electrochemical reactions.
