Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 31    No. 7    July 2021

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Facile synthesis of high capacity P2-type Na2/3Fe1/2Mn1/2O2 cathode material for sodium-ion batteries
Mu-lan QIN, Chang-yu YIN, Wen XU, Yang LIU, Jun-hao WEN, Bin SHEN, Wei-gang WANG, Wan-min LIU

Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China

Abstract:P2-type Na2/3Fe1/2Mn1/2O2 was synthesized by a facile sol-gel method, and the effect of calcination temperature on the structure, morphology and electrochemical performance of samples was investigated. The results show that the sample obtained at 900 °C is pure P2-type Na2/3Fe1/2Mn1/2O2 phase with good crystallization, which consists of hexagon plate-shaped particles with the size and thickness of 2-4 μm and 200-400 nm, respectively. The sample exhibits an initial specific discharge capacity of 243 mA·h/g at a current density of 26 mA/g with good cycling stability. The high specific capacity indicates that P2-type Na2/3Fe1/2Mn1/2O2 is a promising cathode material for sodium- ion batteries.


Key words: sodium-ion battery; cathode material; Na2/3Fe1/2Mn1/2O2; electrochemical performance; sol-gel method

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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