Promoting homogeneous tungsten doping in LiNiO2 through a grain boundary phase induced by excessive lithium

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成果类型：

期刊论文

作者：

Wang, Junjie (57322107100);Yan, Yucen (57218509552);Zhao, Zilan (59416271400);Li, Jiayi (57210323427);Luo, Gui (57455297100);...

通讯作者：

Jiexi Wang

作者机构：

[Peng, Wenjie (7202994938); Guo, Huajun (7404404226); Zheng, Junchao (12772675700); Yan, Guochun (55607429800); Duan, Hui (57195422677); Ou, Xing (57189729504); Yan, Yucen (57218509552); Wang, Zhixing (7410045624); Zhao, Zilan (59416271400); Wang, Jiexi (56191368700); Wang, Junjie (57322107100); Wang, Jiexi] Cent South Univ, Sch Met & Environm, Natl Energy Met Resources & New Mat Key Lab, Engn Res Ctr,Minist Educ Adv Battery Mat,Hunan Pro, Changsha 410083, Peoples R China.

[Li, Jiayi (57210323427)] Univ Washington, Dept Chem, Seattle, WA 98195 USA.

[Deng, Duo (59273476200); Peng, Wenjie (7202994938); Wang, Zhixing (7410045624); Luo, Gui (57455297100)] BASF Shanshan Battery Mat Co LTD, Res Inst, Changsha 410205, Peoples R China.

[Peng, Wenjie (7202994938); Guo, Huajun (7404404226); Yan, Guochun (55607429800); Duan, Hui (57195422677); Dong, Mingxia (57194504905); Wang, Jiexi] Natl Engn Res Ctr Anvanced Energy Storage Mat, Changsha 410205, Peoples R China.

[Li, Lingjun (55730888000)] Changsha Univ Sci & Technol, Sch Mat Sci & Engn, Changsha 410114, Peoples R China.

通讯机构：

[Wang, JX ] C

Cent South Univ, Sch Met & Environm, Natl Energy Met Resources & New Mat Key Lab, Engn Res Ctr,Minist Educ Adv Battery Mat,Hunan Pro, Changsha 410083, Peoples R China.

语种：

英文

关键词：

Grain size and shape;Layered semiconductors;Semiconductor doping;Tungsten compounds;Cathodes material;Doping mechanism;Doping process;Existing forms;Grain boundary phasis;H2↔h3 phase transition;Ion batteries;Lithium ions;Tungsten doping;W-doping;Lithium compounds

期刊：

Advanced Powder Materials

ISSN：

2772-834X

年：

2025

卷：

期：

页码：

100248

DOI：

10.1016/j.apmate.2024.100248

基金类别：

BASF National Natural Science Foundation of China, NSFC, (52122407, 52174285, 52404317) National Natural Science Foundation of China, NSFC Science and Technology Program of Hunan Province, (2022RC3048) Science and Technology Program of Hunan Province

机构署名：

本校为其他机构

院系归属：

材料科学与工程学院

摘要：

LiNiO 2 (LNO) is one of the most promising cathode materials for lithium-ion batteries. Tungsten element in enhancing the stability of LNO has been researched extensively. However, the understanding of the specific doping process and existing form of W are still not perfect. This study proposes a lithium-induced grain boundary phase W doping mechanism. The results demonstrate that the introduced W atoms first react with the lithium source to generate a Li–W–O phase at the grain boundary of primary particles. With the increase of lithium ratio...

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Promoting homogeneous tungsten doping in LiNiO2 through a grain boundary phase induced by excessive lithium

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