文献类型：期刊文献

英文题名：Preparation and Carbon Nanotube Modification of High Voltage LiNi0.5Mn1.5O4 Cathode Materials

作者：Lu, Ju Wang, Jiawei Wang, Haifeng Wang, Hao Lu, Fanghai

第一作者：Lu, Ju

通信作者：Wang, HF[1];Wang, HF[2];Wang, HF[3]

机构：[1]Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China;[2]Guizhou Prov Engn Technol Res Ctr Manganese Mat Ba, Tongren 554300, Guizhou, Peoples R China;[3]Guizhou Prov Key Lab Met Engn & Energy Saving, Guiyang 550025, Peoples R China;[4]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550002, Guizhou, Peoples R China

第一机构：Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Sch Mat & Met, Guiyang 550025, Guizhou, Peoples R China;corresponding author), Guizhou Prov Engn Technol Res Ctr Manganese Mat Ba, Tongren 554300, Guizhou, Peoples R China;corresponding author), Guizhou Prov Key Lab Met Engn & Energy Saving, Guiyang 550025, Peoples R China.

年份：2025

卷号：511

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20244817430536);Scopus(收录号：2-s2.0-85209995933);WOS:【SCI-EXPANDED(收录号:WOS:001367104900001)】；

基金：The funding supports for this study were obtained from Key projects supported by science and technology in Guizhou Province ( [2022] key020) , Major special projects in Guizhou Province ( [2022] 003) , Tongren Science and Technology Plan Project ( [2021] 13) . The authors sincerely thanks the reviewers for their views and suggestions to further improve the quality of the manuscript.

语种：英文

外文关键词：Lithium ion battery; Ni-Mn composite oxide; Conductive agent modification

摘要：In this study, the nickel-manganese binary cathode material was synthesized using a high-temperature solid-state roasting method. The effects of roasting temperature and roasting time on the electrochemical performance of the cathode material was investigated. The research demonstrated that under conditions of 850 degrees C for 12 h, the synthesized LNMO exhibited an Fd-3 m space group structure characterized. The initial discharge-specific capacity reached 135 mAh center dot g-1 at a rate of 0.2C, while the capacity retention rate was 91.8 % after 100 cycles. Following the modification with carbon nanotubes, exhibited an initial discharge capacity of 140 mAh center dot g-1 at a rate of 0.2 C, maintaining a capacity retention rate of 92.9 % after 100 cycles. Carbon nanotube modification was implemented to address the poor conductivity and unstable electrochemical performance of LNMO when utilizing acetylene black as a conductive agent. This finding suggests that the unique three-dimensional conductive network formed by carbon nanotube offers superior modification effects compared to acetylene black, while the reduced quantity of conductive agent used also contributes to cost savings.