文献类型：期刊文献

英文题名：Morphological evolution and surface orientation effects of nickel manganese oxide in the preparation of LNMO cathode material

作者：Pei, Zhengqing Wang, Jiawei Wang, Haifeng Zheng, Kexin Wang, Qian Zhou, Jiexin Ma, Dehua Lu, Ju Lu, Fanghai

第一作者：Pei, Zhengqing

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

机构：[1]Guizhou Univ, Sch Mat & Met, Guiyang 550025, Peoples R China;[2]Guizhou Prov Engn Technol Res Ctr Manganese Mat Ba, Tongren 554300, 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, Peoples R China

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

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

年份：2025

卷号：509

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20244617365236);Scopus(收录号：2-s2.0-85208764147);WOS:【SCI-EXPANDED(收录号:WOS:001358673100001)】；

基金：This study was supported by the key projects supported by Science and Technology in Guizhou Province ([2022]key020) , the Guizhou Province ([2022]003), and the Tongren Science and Technology Plan Project ([2021]13).

语种：英文

外文关键词：Cathode materials; LNMO; Lithium-ion battery; Morphology; Surface orientation

摘要：The study investigated the evolution of LNMO (LiNi0.5Mn1.5O4) morphology and surface orientation as a function of increasing temperature. The results show that at an initial calcination temperature of 750 degrees C, LNMO exhibits spherical polyhedral with (111), (110), and (100) facets and relatively small particle sizes. In response to increasing temperatures, the particle size increases, the number of crystal facets decreases, and the material ultimately transitions to a typical spinel structure. Notably, the LNMO material calcined at 750 degrees C demonstrates a high lithium-ion migration rate, retaining 81.24% of its capacity after 500 cycles at a 2 C rate. This exceptional performance is attributed to the exposure of multiple crystal facets, suitable particle size, and the presence of Mn3+, which collectively stabilize the crystal structure and provide suitable pathways for Li+ transport.