Improvement of long-term cycling performance of high-nickel cathode materials by ZnO coating

Fangfang Wang; Ruoyu Hong; Xuesong Lu; Huiyong Liu; Yuan Zhu; Ying Zheng; David Hui

doi:10.1515/ntrev-2021-0020

Improvement of long-term cycling performance of high-nickel cathode materials by ZnO coating

Fangfang Wang, Ruoyu Hong^*, Xuesong Lu, Huiyong Liu, Yuan Zhu, Ying Zheng, David Hui

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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Abstract

The high-nickel cathode material of LiNi_0.8Co_0.15Al_0.05O₂ (LNCA) has a prospective application for lithium-ion batteries due to the high capacity and low cost. However, the side reaction between the electrolyte and the electrode seriously affects the cycling stability of lithium-ion batteries. In this work, Ni²⁺ preoxidation and the optimization of calcination temperature were carried out to reduce the cation mixing of LNCA, and solid-phase Al-doping improved the uniformity of element distribution and the orderliness of the layered structure. In addition, the surface of LNCA was homogeneously modified with ZnO coating by a facile wet-chemical route. Compared to the pristine LNCA, the optimized ZnO-coated LNCA showed excellent electrochemical performance with the first discharge-specific capacity of 187.5 mA h g^-1, and the capacity retention of 91.3% at 0.2C after 100 cycles. The experiment demonstrated that the improved electrochemical performance of ZnO-coated LNCA is assigned to the surface coating of ZnO which protects LNCA from being corroded by the electrolyte during cycling.

Original language	English
Pages (from-to)	210-220
Number of pages	11
Journal	Nanotechnology Reviews
Volume	10
Issue number	1
DOIs	https://doi.org/10.1515/ntrev-2021-0020
Publication status	Published - 20 Apr 2021

Keywords

cathode material
LiNiCoAlO
lithium-ion battery
ZnO coating

ASJC Scopus subject areas

Biotechnology
Medicine (miscellaneous)
Materials Science (miscellaneous)
Energy Engineering and Power Technology
Engineering (miscellaneous)
Process Chemistry and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Improvement of long-term cycling performance of high-nickel cathode materials by ZnO coating",

abstract = "The high-nickel cathode material of LiNi0.8Co0.15Al0.05O2 (LNCA) has a prospective application for lithium-ion batteries due to the high capacity and low cost. However, the side reaction between the electrolyte and the electrode seriously affects the cycling stability of lithium-ion batteries. In this work, Ni2+ preoxidation and the optimization of calcination temperature were carried out to reduce the cation mixing of LNCA, and solid-phase Al-doping improved the uniformity of element distribution and the orderliness of the layered structure. In addition, the surface of LNCA was homogeneously modified with ZnO coating by a facile wet-chemical route. Compared to the pristine LNCA, the optimized ZnO-coated LNCA showed excellent electrochemical performance with the first discharge-specific capacity of 187.5 mA h g-1, and the capacity retention of 91.3% at 0.2C after 100 cycles. The experiment demonstrated that the improved electrochemical performance of ZnO-coated LNCA is assigned to the surface coating of ZnO which protects LNCA from being corroded by the electrolyte during cycling.",

keywords = "cathode material, LiNiCoAlO, lithium-ion battery, ZnO coating",

author = "Fangfang Wang and Ruoyu Hong and Xuesong Lu and Huiyong Liu and Yuan Zhu and Ying Zheng and David Hui",

note = "Funding Information: Funding information: This research was financially supported by Minjiang Scholarship of Fujian Province (No. Min-Gaojiao[2010]-117), Central-government Guided Fund for Local Economic Development (No. 830170778), R&D Fund for Strategic Emerging Industry of Fujian Province (No. 82918001), and International Cooperation Project of Fujian Science and Technology Department (No. 830170771). Publisher Copyright: {\textcopyright} 2021 Fangfang Wang et al., published by De Gruyter 2021.",

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AU - Wang, Fangfang

AU - Hong, Ruoyu

AU - Lu, Xuesong

AU - Liu, Huiyong

AU - Zhu, Yuan

AU - Zheng, Ying

AU - Hui, David

N1 - Funding Information: Funding information: This research was financially supported by Minjiang Scholarship of Fujian Province (No. Min-Gaojiao[2010]-117), Central-government Guided Fund for Local Economic Development (No. 830170778), R&D Fund for Strategic Emerging Industry of Fujian Province (No. 82918001), and International Cooperation Project of Fujian Science and Technology Department (No. 830170771). Publisher Copyright: © 2021 Fangfang Wang et al., published by De Gruyter 2021.

PY - 2021/4/20

Y1 - 2021/4/20

N2 - The high-nickel cathode material of LiNi0.8Co0.15Al0.05O2 (LNCA) has a prospective application for lithium-ion batteries due to the high capacity and low cost. However, the side reaction between the electrolyte and the electrode seriously affects the cycling stability of lithium-ion batteries. In this work, Ni2+ preoxidation and the optimization of calcination temperature were carried out to reduce the cation mixing of LNCA, and solid-phase Al-doping improved the uniformity of element distribution and the orderliness of the layered structure. In addition, the surface of LNCA was homogeneously modified with ZnO coating by a facile wet-chemical route. Compared to the pristine LNCA, the optimized ZnO-coated LNCA showed excellent electrochemical performance with the first discharge-specific capacity of 187.5 mA h g-1, and the capacity retention of 91.3% at 0.2C after 100 cycles. The experiment demonstrated that the improved electrochemical performance of ZnO-coated LNCA is assigned to the surface coating of ZnO which protects LNCA from being corroded by the electrolyte during cycling.

AB - The high-nickel cathode material of LiNi0.8Co0.15Al0.05O2 (LNCA) has a prospective application for lithium-ion batteries due to the high capacity and low cost. However, the side reaction between the electrolyte and the electrode seriously affects the cycling stability of lithium-ion batteries. In this work, Ni2+ preoxidation and the optimization of calcination temperature were carried out to reduce the cation mixing of LNCA, and solid-phase Al-doping improved the uniformity of element distribution and the orderliness of the layered structure. In addition, the surface of LNCA was homogeneously modified with ZnO coating by a facile wet-chemical route. Compared to the pristine LNCA, the optimized ZnO-coated LNCA showed excellent electrochemical performance with the first discharge-specific capacity of 187.5 mA h g-1, and the capacity retention of 91.3% at 0.2C after 100 cycles. The experiment demonstrated that the improved electrochemical performance of ZnO-coated LNCA is assigned to the surface coating of ZnO which protects LNCA from being corroded by the electrolyte during cycling.

KW - cathode material

KW - LiNiCoAlO

KW - lithium-ion battery

KW - ZnO coating

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Improvement of long-term cycling performance of high-nickel cathode materials by ZnO coating

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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