An olivine LiFe_(0.5)Mn_(0.5)PO_(4)/rGO composite cathode material prepared from manganese ore tailings with excellent lithium storage performance  

作　　者：Wen-Han Xu Jin-Huan Yao Qi-Ze Huang Shao-Shuai Bai Yan-Wei Li Ji-Qiong Jiang Jian-Wen Yang 

机构地区：[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

出　　处：《Rare Metals》2024年第11期5664-5676,共13页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.51964012)。

摘　　要：The high-value utilization of manganese ore tailings is of great significance for saving mineral resources and achieving environmental protection.Herein,an olivine LiFe_(0.5)Mn_(0.5)PO_(4)/rGO composite is synthesized by a simple precipitation method and subsequent high-temperature calcination process using the manganese ore tailings as raw material.The prepared LiFe_(0.5)Mn_(0.5)PO_(4)/rGO composite exhibits superior cycling stability(with 113.5 mAh·g^(-1)after 300 cycles at1.0C(1.0C=170 mA·g^(-1)))and superior rate performance(with 65.6 mAh·g^(-1)at 10.0C).Ex-situ XRD and electrochemical impedance spectroscopy(EIS)analyses evidence that the LiFe_(0.5)Mn_(0.5)PO_(4)/rGO material has excellent structural stability and electrochemical reversibility during charge and discharge processes.Furthermore,the LiFe_(0.5)Mn_(0.5)PO_(4)/rGO//graphite full Li-ion battery also exhibits excellent cycling stability indicating its potential commercialization value.

关 键 词：Lithium-ion batteries Cathode materials LiFe_(0.5)Mn_(0.5)PO_(4) Manganese ore tailings Composite 

分 类 号：TM912[电气工程—电力电子与电力传动] TB332[一般工业技术—材料科学与工程] TD926.4[矿业工程—选矿]