Enhanced cyclic stability of NCM-622 cathode by Ti3+ doped TiO2 coating

Xiaoshuang Xi; Yunying Fan; Yichun Liu; Zhuo Chen; Jianping Zou; Songlin Zhu

doi:10.1016/j.jallcom.2021.159664

Enhanced cyclic stability of NCM-622 cathode by Ti³⁺ doped TiO₂ coating

Xiaoshuang Xi, Yunying Fan^*, Yichun Liu, Zhuo Chen, Jianping Zou, Songlin Zhu

^*Corresponding author for this work

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

31 Citations (Scopus)

Abstract

The TiO₂ coating on LiNi_0.6Co_0.2 Mn_0.2O₂ electrode can effectively improve its electrochemical properties, such as cyclic stability, ratio capacity and coulomb efficiency, etc. In this paper, Ti³⁺ was introduced into TiO₂ coating by means of hydrogen thermal reduction. Compared with the original material and TiO₂ coating material, Ti³⁺ doped TiO₂ coating material has better electrochemical performance. After 150 cycles at 1 C, the capacity retention rates of the three materials were 79.9%, 92.8% and 95.1%, respectively. Our findings provide an effective approach for further enhancing the electrochemical performance of NCM cathode materials.

Original language	English
Article number	159664
Journal	Journal of Alloys and Compounds
Volume	872
DOIs	https://doi.org/10.1016/j.jallcom.2021.159664
Publication status	Published - 15 Aug 2021
Externally published	Yes

Keywords

Doped
LiNiCo MnO
Solvothermal synthesis
Ti/TiO coating layer

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10.1016/j.jallcom.2021.159664

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title = "Enhanced cyclic stability of NCM-622 cathode by Ti3+ doped TiO2 coating",

abstract = "The TiO2 coating on LiNi0.6Co0.2 Mn0.2O2 electrode can effectively improve its electrochemical properties, such as cyclic stability, ratio capacity and coulomb efficiency, etc. In this paper, Ti3+ was introduced into TiO2 coating by means of hydrogen thermal reduction. Compared with the original material and TiO2 coating material, Ti3+ doped TiO2 coating material has better electrochemical performance. After 150 cycles at 1 C, the capacity retention rates of the three materials were 79.9%, 92.8% and 95.1%, respectively. Our findings provide an effective approach for further enhancing the electrochemical performance of NCM cathode materials.",

keywords = "Doped, LiNiCo MnO, Solvothermal synthesis, Ti/TiO coating layer",

author = "Xiaoshuang Xi and Yunying Fan and Yichun Liu and Zhuo Chen and Jianping Zou and Songlin Zhu",

note = "Publisher Copyright: {\textcopyright} 2021 The Authors",

year = "2021",

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doi = "10.1016/j.jallcom.2021.159664",

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T1 - Enhanced cyclic stability of NCM-622 cathode by Ti3+ doped TiO2 coating

AU - Xi, Xiaoshuang

AU - Fan, Yunying

AU - Liu, Yichun

AU - Chen, Zhuo

AU - Zou, Jianping

AU - Zhu, Songlin

PY - 2021/8/15

Y1 - 2021/8/15

N2 - The TiO2 coating on LiNi0.6Co0.2 Mn0.2O2 electrode can effectively improve its electrochemical properties, such as cyclic stability, ratio capacity and coulomb efficiency, etc. In this paper, Ti3+ was introduced into TiO2 coating by means of hydrogen thermal reduction. Compared with the original material and TiO2 coating material, Ti3+ doped TiO2 coating material has better electrochemical performance. After 150 cycles at 1 C, the capacity retention rates of the three materials were 79.9%, 92.8% and 95.1%, respectively. Our findings provide an effective approach for further enhancing the electrochemical performance of NCM cathode materials.

AB - The TiO2 coating on LiNi0.6Co0.2 Mn0.2O2 electrode can effectively improve its electrochemical properties, such as cyclic stability, ratio capacity and coulomb efficiency, etc. In this paper, Ti3+ was introduced into TiO2 coating by means of hydrogen thermal reduction. Compared with the original material and TiO2 coating material, Ti3+ doped TiO2 coating material has better electrochemical performance. After 150 cycles at 1 C, the capacity retention rates of the three materials were 79.9%, 92.8% and 95.1%, respectively. Our findings provide an effective approach for further enhancing the electrochemical performance of NCM cathode materials.

KW - Doped

KW - LiNiCo MnO

KW - Solvothermal synthesis

KW - Ti/TiO coating layer

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DO - 10.1016/j.jallcom.2021.159664

M3 - Article

AN - SCOPUS:85104077355

SN - 0925-8388

VL - 872

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 159664

ER -

Enhanced cyclic stability of NCM-622 cathode by Ti³⁺ doped TiO₂ coating

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Keywords

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