Performance of Na0.44Mn1−xMxO2 (M = Ni, Mg; 0 ≤ x ≤ 0.44) as a cathode for rechargeable sodium ion batteries

被引：0
作者：
Yu Shao
Yu-Ting Zhou
Miao-Miao Deng
Zhong-Feng Tang
Jia-Ying Liao
Henny J. M. Bouwmeester
Chun-Hua Chen
机构：
[1] University of Science and Technology of China,CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering and Collaborative Innovation Center of Suzhou Nano Science and Technology
[2] University of Twente,Electrochemistry Research Group, Membrane Science and Technology, Department of Science and Technology, MESA+ Institute for Nanotechnology
来源：
Journal of Solid State Electrochemistry | 2019年 / 23卷
关键词：
Sodium ion battery; Cathode; Na; MnO; Substitution;
D O I：
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中图分类号：
学科分类号：
摘要：
The influence of partial substitution of manganese by nickel or magnesium in Na0.44MnO2on cathode performance in sodium ion batteries has been investigated. Partial substitution changes the structure of parent Na0.44MnO2 from tunnel into layered P2-type, or a mixture of P2- and P3-type materials. Substitution smoothes the charge/discharge curves and may significantly improve capacity, albeit with a lower capacity retention relative to pristine Na0.44MnO2. In particular, high discharge capacities are found in the voltage range 2.0–4.2 V at 0.1 C rate for Na0.44Mn0.89Ni0.11O2 (193 mAh g−1) and Na0.44Mn0.89Mg0.11O2 (188 mAh g−1), with a capacity retention of 74% and 81%, respectively, after 70 cycles.
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页码：2979 / 2988
页数：9
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