Mn-doped LiFePO_(4)@C as a high-performance cathode material for lithium-ion batteries

作     者：Wenjing Chen Fangxiang Song Yumei Yang Qianlin Chen 

作者机构：School of Chemistry and Chemical EngineeringGuizhou UniversityGuiyang550025China Collaborative Innovation Center of Guizhou Province for Efficient Utilization of Phosphorus and Fluorine ResourcesGuizhou UniversityGuiyang550025China 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2024年第90卷第7期

页      面：418-428页

核心收录：

学科分类：0808[工学-电气工程] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the Natural Science Research Project of the Education Department of Guizhou Province(grant No.QJ001) 

主　　题：Mn-doped LiFePO_(4) Lithium-ion battery High temperature 

摘      要：In this work,LiFe_(1-x)MnxPO_(4)@C(x=0,0.01,0.02,0.03)cathode materials were obtained by a simple co-precipitation method and heat treatment,and the influence of Mn-doped modification on the electrochemical performance of LiFePO_(4)@C cathode materials was *** show that by doping an appropriate amount of Mn,the cell volume became larger,and the electronic conductivity increased,which improved the Li+diffusion rate and thus its rate capability and cycle performance of Li-ion *** them,LiFe_(0.98)Mn_(0.02)PO_(4)@C showed superior lithium storage capability;the discharge capacity can reach 150.7 mAh g^(−1)at 0.1 *** cell could discharge up to 155.9 mAh g^(−1)at 1 C under high temperature at 45°C,which was higher than LiFePO_(4)@C(142 mAh g^(−1))under the same test *** discharge capacity of 1 C at room temperature was 139.9 mAh g^(−1),and the cycle stability was 95.9%after 200 *** showed that it had good rate capability and excellent cycle *** results indicate that Mn-doped LFP is a simple and effective strategy for developing high-performance cathode materials.