Suppression and Mechanism of Voltage Decay in Sb-Doped Lithium-Rich Layered Oxide Cathode Materials

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成果类型：

期刊论文

作者：

Chen, Zhaoyong;Liu, Qiming;Yan, Xiaoyan;Zhu, Huali;Liu, Jun;...

通讯作者：

Zhaoyong Chen

作者机构：

[Liu, Qiming; Yan, Xiaoyan; Wang, Yanxia; Chen, Zhaoyong; Liu, Jun; Duan, Junfei] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410114, Peoples R China.

[Liu, Qiming; Yan, Xiaoyan; Wang, Yanxia; Zhu, Huali; Chen, Zhaoyong; Liu, Jun; Duan, Junfei] Changsha Univ Sci & Technol, Inst New Energy & Power Battery, Changsha 410114, Peoples R China.

[Zhu, Huali] Changsha Univ Sci & Technol, Sch Phys & Elect Sci, Changsha 410114, Peoples R China.

通讯机构：

[Zhaoyong Chen] C

College of Materials Science and Engineering, Changsha University of Science and Technology, Changsha 410114, PR China<&wdkj&>Institute of New Energy and Power Battery, Changsha University of Science and Technology, Changsha 410114, PR China

语种：

英文

期刊：

Journal of Physical Chemistry Letters

ISSN：

1948-7185

年：

2022

卷：

期：

页码：

8214-8220

DOI：

10.1021/acs.jpclett.2c02070

基金类别：

National Natural Science Foundation of China [51874048]; Scientific Research Fund of Changsha Science and Technology Bureau [kh2003021]; Research Foundation of Education Bureau of Hunan Province [19B010, 19A003]

机构署名：

本校为第一机构

院系归属：

物理与电子科学学院

材料科学与工程学院

摘要：

Voltage decay during cycling is the major problem for lithium-rich layered oxide cathodes. Here, we designed Sb-doped lithium-rich layered oxides prepared by a coprecipitation-solvent thermal method, aiming to alleviate the voltage decay of lithium-rich layered oxides. The midpoint discharge voltage and specific capacity of Li(1.20)Ni(0.133)Co(0.133)Mn(0.633)Sb(0.01)O(2) (LLMO-Sb1) demonstrate almost no decaying after 100 cycles at 1 C. Moreover, it exhibits a large rate capacity (215 mAh g(-1) at 5 C). The suppressed voltage decay and enhanced cycle performance of Sb-doped material are attrib...

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Suppression and Mechanism of Voltage Decay in Sb-Doped Lithium-Rich Layered Oxide Cathode Materials

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