An olivine LiFe0.5Mn0.5PO4/rGO composite cathode material prepared from manganese ore tailings with excellent lithium storage performance

Wen-Han Xu ¹Jin-Huan Yao ²Qi-Ze Huang ²Shao-Shuai Bai ²Yan-Wei Li ³Ji-Qiong Jiang ²Jian-Wen Yang²

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作者信息

1. Guangxi Key Laboratory of New Processing Technology for Nonferrous Metal and Materials,Ministry of Education,College of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,China
2. Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials,College of Chemistry and Bioengineering,Guilin University of Technology,Guilin 541004,China
3. Guangxi Key Laboratory of New Processing Technology for Nonferrous Metal and Materials,Ministry of Education,College of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,China;Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials,College of Chemistry and Bioengineering,Guilin University of Technology,Guilin 541004,China
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Abstract

The high-value utilization of manganese ore tail-ings is of great significance for saving mineral resources and achieving environmental protection.Herein,an olivine LiFe0.5Mn0.5PO4/rGO composite is synthesized by a simple precipitation method and subsequent high-temperature calci-nation process using the manganese ore tailings as raw material.The prepared LiFe0.5Mn0.5PO4/rGO composite exhibits supe-rior cycling stability(with 113.5 mAh·g-1 after 300 cycles at 1.0C(1.0C=170 mA·g-1))and superior rate performance(with 65.6 mAh·g-1 at 10.0C).Ex-situ XRD and electro-chemical impedance spectroscopy(EIS)analyses evidence that the LiFe0.5Mn0.5PO4/rGO material has excellent structural sta-bility and electrochemical reversibility during charge and dis-charge processes.Furthermore,the LiFe0.5Mn0.5PO4/rGO//graphite full Li-ion battery also exhibits excellent cycling stability indicating its potential commercialization value.

Key words

Lithium-ion batteries/Cathode materials/LiFe0.5Mn0.5PO4/Manganese ore tailings/Composite

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出版年

2024

稀有金属(英文版)

中国有色金属学会

稀有金属(英文版)

CSTPCDCSCDEI

影响因子：0.801

ISSN：1001-0521

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