文献类型：期刊文献

英文题名：Study and Property Characterization of LiMn₂O₄ Synthesized from Octahedral Mn₃O₄

作者：Wang, Hao Wang, Jiawei Wang, Haifeng Wang, Song Dong, Xinyu Hao, Wenhao Lu, Ju Lu, Fanghai

第一作者：Wang, Hao

通信作者：Wang, HF[1];Wang, HF[2];Wang, HF[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：2023

卷号：15

期号：18

外文期刊名：SUSTAINABILITY

收录：;WOS:【SSCI(收录号:WOS:001076793100001)，SCI-EXPANDED(收录号:WOS:001076793100001)】；

基金：This research was funded by [Science and technology in Guizhou Province] [(2022)key020],Projects supported by [Science and technology in Guizhou Province] [(2023)243], [Major special projects in Guizhou Province] [(2022)003], and the [Tongren Science and Technology Plan Project][(2021)13].

语种：英文

外文关键词：Mn3O4; octahedral appearance; LiMn2O4

摘要：The structure of Mn3O4 with an octahedron structure was similar to that of LiMn2O4, and the lithium manganate prepared with it had good electrochemical performance. During the preparation of octahedron Mn3O4, the effects of the pH regulator, temperature, and reaction pH on its morphology, specific surface area, and other properties were studied in this paper. LiMn2O4 was prepared from Octahedron Mn3O4 obtained by using better technology. The effects of calcination time and temperature on the physicochemical and electrochemical properties of LiMn2O4 were studied. The research results indicated that the optimal synthesis conditions for Mn3O4 were as follows: ammonia water was used as a pH regulator and complexing agent, reaction pH was 8, reaction temperature was 80 degrees C, reaction time was 12 h, and oxygen flow rate was 3 L center dot min(-1). The LiMn2O4 synthesized had a good octahedron morphology when the calcination temperature was 800 degrees C and the calcination time was 10 h. The first discharge-specific capacity was 121.9 mAh center dot g(-1) at a current density of 0.2 C, the discharge-specific capacity was 114.1 mAh center dot g(-1) after 100 cycles, and the capacity retention rate was 93.6%. Therefore, the lithium manganate prepared by using octahedron manganous oxide had good electrochemical reversibility and a good application prospect.