skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on October 1, 2021

Title: Atomic-scale tuned interface of nickel-rich cathode for enhanced electrochemical performance in lithium-ion batteries

Abstract

The Ni-rich layered LiNi0.6Mn0.2Co0.2O2 (NMC622) is one promising cathode for lithium-ion batteries (LIBs), but suffers from poor cycling stability under high cutoff potentials. The performance degradation was reflected as capacity fading and voltage drop, having their roots in instable interface of NMC622. Aimed at improving interfacial stability, in this study, we deposited nanoscale ZrO2 coatings conformally over NMC622 cathodes using atomic layer deposition (ALD). We found that, under a high cutoff voltage (4.5 V), the ALD ZrO2 coatings evidently improved the performance of NMC622 cathode, showing better cyclability and higher sustainable capacity. In addition, the ALD coatings dramatically boosted the rate capability of NMC622. All these compelling performance results are ascribed to the atomic-scale tunable ZrO2 coatings via ALD, which create stable interface and thereby inhibit unfavorable evolutions. In the study, we utilize a suite of characterization tools and various analyses to clarify the effects of ALD ZrO2 coatings. This study will be helpful for improving the performance of nickel-rich cathodes via interfacial engineering using ALD.

Authors:
 [1];  [1];  [1];  [1];  [2]; ORCiD logo [3];  [1]
  1. Univ. of Arkansas, Fayetteville, AR (United States)
  2. Univ. of Science and Technology Beijing (China)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1631236
Alternate Identifier(s):
OSTI ID: 1648883
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Materials Science and Technology
Additional Journal Information:
Journal Volume: 54; Journal Issue: C; Journal ID: ISSN 1005-0302
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Atomic layer deposition; Lithium ion battery; Surface coating

Citation Formats

Liu, Yongqiang, Wang, Xin, Cai, Jiyu, Han, Xiaoxiao, Geng, Dongsheng, Li, Jianlin, and Meng, Xiangbo. Atomic-scale tuned interface of nickel-rich cathode for enhanced electrochemical performance in lithium-ion batteries. United States: N. p., 2020. Web. https://doi.org/10.1016/j.jmst.2020.02.080.
Liu, Yongqiang, Wang, Xin, Cai, Jiyu, Han, Xiaoxiao, Geng, Dongsheng, Li, Jianlin, & Meng, Xiangbo. Atomic-scale tuned interface of nickel-rich cathode for enhanced electrochemical performance in lithium-ion batteries. United States. https://doi.org/10.1016/j.jmst.2020.02.080
Liu, Yongqiang, Wang, Xin, Cai, Jiyu, Han, Xiaoxiao, Geng, Dongsheng, Li, Jianlin, and Meng, Xiangbo. Thu . "Atomic-scale tuned interface of nickel-rich cathode for enhanced electrochemical performance in lithium-ion batteries". United States. https://doi.org/10.1016/j.jmst.2020.02.080.
@article{osti_1631236,
title = {Atomic-scale tuned interface of nickel-rich cathode for enhanced electrochemical performance in lithium-ion batteries},
author = {Liu, Yongqiang and Wang, Xin and Cai, Jiyu and Han, Xiaoxiao and Geng, Dongsheng and Li, Jianlin and Meng, Xiangbo},
abstractNote = {The Ni-rich layered LiNi0.6Mn0.2Co0.2O2 (NMC622) is one promising cathode for lithium-ion batteries (LIBs), but suffers from poor cycling stability under high cutoff potentials. The performance degradation was reflected as capacity fading and voltage drop, having their roots in instable interface of NMC622. Aimed at improving interfacial stability, in this study, we deposited nanoscale ZrO2 coatings conformally over NMC622 cathodes using atomic layer deposition (ALD). We found that, under a high cutoff voltage (4.5 V), the ALD ZrO2 coatings evidently improved the performance of NMC622 cathode, showing better cyclability and higher sustainable capacity. In addition, the ALD coatings dramatically boosted the rate capability of NMC622. All these compelling performance results are ascribed to the atomic-scale tunable ZrO2 coatings via ALD, which create stable interface and thereby inhibit unfavorable evolutions. In the study, we utilize a suite of characterization tools and various analyses to clarify the effects of ALD ZrO2 coatings. This study will be helpful for improving the performance of nickel-rich cathodes via interfacial engineering using ALD.},
doi = {10.1016/j.jmst.2020.02.080},
journal = {Journal of Materials Science and Technology},
number = C,
volume = 54,
place = {United States},
year = {2020},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on October 1, 2021
Publisher's Version of Record

Save / Share: