Effect of V doping on electrochemical properties of LiNi1/3Co1/3Mn1/3O2 as cathode material for lithium-ion battery

Zheng Hao; Wang Shiwei; Meng Weiwei

doi:10.7513/j.issn.1004-7638.2022.04.002

Volume 43 Issue 4

Sep. 2022

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Zheng Hao, Wang Shiwei, Meng Weiwei. Effect of V doping on electrochemical properties of LiNi1/3Co1/3Mn1/3O2 as cathode material for lithium-ion battery[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(4): 10-15. doi: 10.7513/j.issn.1004-7638.2022.04.002

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Zheng Hao, Wang Shiwei, Meng Weiwei. Effect of V doping on electrochemical properties of LiNi_1/3Co_1/3Mn_1/3O₂ as cathode material for lithium-ion battery[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(4): 10-15. doi: 10.7513/j.issn.1004-7638.2022.04.002

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Effect of V doping on electrochemical properties of LiNi_1/3Co_1/3Mn_1/3O₂ as cathode material for lithium-ion battery

doi: 10.7513/j.issn.1004-7638.2022.04.002

Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China

Received Date: 2022-04-14
Publish Date: 2022-09-14

Abstract

Abstract

LiNi_1/3Co_1/3Mn_1/3O₂ (LNCM) cathode material with high specific capacity has received extensive attention in power batteries. However, the serious safety issues and poor cycle performance limit its application prospect. Doping is one of the effective methods to boost the electrochemical performance of electrode materials. Vanadium-doped LiNi_1/3-xCo_1/3Mn_1/3V_xO₂ cathode material was successfully prepared by the sol-gel method using NH₄VO₃ as vanadium source. The research results show that by replacing some Ni²⁺ ions in the LiNi_1/3Co_1/3Mn_1/3O₂ cathode material by V⁵⁺, the cation mixing is effectively reduced, the crystal structure of the cathode material is stabilized, and the diffusion coefficient of Li⁺ in the lattice increases. And the LiNi_1/3-0.02Co_1/3Mn_1/3V_0.02O₂ (LNCM-V) electrode material exhibits excellent lithium storage performance (the discharge capacity is 169 mAh/g at 0.5 C after 80 cycles).
- lithium ion battery,
- cathode material,
- LiNi_1/3Co_1/3Mn_1/3O₂,
- V doping,
- electrochemical properties

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References(22)

References

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