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research-article

Influence of Roasting Temperature on Electrochemical Performance of LiNi0.5Mn1.5O4 Cathode for Lithium-ion Battery

[+] Author and Article Information
Lei Niu

School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
528039060@qq.com

Shan Geng

College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
295647060@qq.com

Hongliang Li

College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
1406382145@qq.com

Songli Du

College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
1510421152@qq.com

Xiaoling Cui

School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China; College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
xlcuilw@163.com

ShiYou Li

College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
sylilw@163.com

1Corresponding author.

ASME doi:10.1115/1.4038799 History: Received July 02, 2017; Revised September 14, 2017

Abstract

Nano-micro spheres of LiNi0.5Mn1.5O4 materials are prepared by carbonate co-precipitation method. The effect of calcination temperatures on morphology and electrochemical property is explored. Results show that the structure of the material becomes more compact with the increase of the temperature, which is propitious to the improvement of electrical conductivity and activation level of the material. And the charge-discharge tests show that the sample obtained at 850 °C (LNMO850) exhibits optimal rate capability and cyclic stability, due to the fact that LNMO850 has a high diffusion coefficient, which is propitious to the improvement of electrical conductivity and activation level of the material.

Copyright (c) 2017 by ASME
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