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Title: Boosting the cycling stability of Ni-rich layered oxide cathode by dry coating of ultrastable Li3V2(PO4)3 nanoparticles

Abstract

Nickel (Ni)-rich layered oxides such as LiNi0.6Co0.2Mn0.2O2 (NCM622) represent one of the most promising candidates for next-generation high-energy lithium-ion batteries (LIBs). However, the pristine Ni-rich cathode materials usually suffer from poor structural stability during cycling. In this work, we demonstrate a simple but effective approach to improve the cycling stability of the NCM622 cathode by dry coating of ultrastable Li3V2(PO4)3-carbon (LVP-C) nanoparticles, which leads to a robust composite cathode (NCM622/LVP-C) without sacrificing the specific energy density compared with pristine NCM622. The optimal NCM622/LVP-C composite presents a high specific capacity of 162 mA h g-1 at 0.5 C and excellent cycling performance with 85.0% capacity retention after 200 cycles at 2 C, higher than that of the pristine NCM622 (67.6%). Systematic characterization confirms that the LVP-C protective layer can effectively reduce the side reactions, restrict the cation mixing of NCM622 and improve its structural stability. Moreover, the NCM622/LVP-C||graphite full cells also show a commercial-level capacity of 3.2 mA h cm-2 and much improved cycling stability compared with NCM622/LVP-C||graphite full cells, indicating the great promise for low-cost, high-capacity and long-life LIBs.

Authors:
 [1];  [2];  [3];  [2]; ORCiD logo [4]; ORCiD logo [4];  [5];  [2]; ORCiD logo [6]; ORCiD logo [2]
  1. Univ. of California, San Diego, CA (United States); Tianjin Univ. (China)
  2. Univ. of California, San Diego, CA (United States)
  3. Department of NanoEngineering; University of California San Diego; La Jolla; USA; Program of Chemical Engineering
  4. Tianjin Univ. (China)
  5. Univ. of California, San Diego, CA (United States); Hebei Normal Univ., Shijiazhuang (China)
  6. New Mexico State Univ., Las Cruces, NM (United States)
Publication Date:
Research Org.:
Univ. of California, Los Angeles, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); China Scholarship Council; China Postdoctoral Science Foundation
OSTI Identifier:
1853161
Alternate Identifier(s):
OSTI ID: 1765409
Grant/Contract Number:  
SC0019381; 201706250088; 2020TQ0183; DESC0019381
Resource Type:
Accepted Manuscript
Journal Name:
Nanoscale
Additional Journal Information:
Journal Volume: 13; Journal Issue: 5; Journal ID: ISSN 2040-3364
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Ni-rich cathode; Li3V2(PO4)3; dry coating; high stability; lithium-ion batteries

Citation Formats

Wang, Dongdong, Yan, Qizhang, Li, Mingqian, Gao, Hongpeng, Tian, Jianhua, Shan, Zhongqiang, Wang, Ning, Luo, Jian, Zhou, Meng, and Chen, Zheng. Boosting the cycling stability of Ni-rich layered oxide cathode by dry coating of ultrastable Li3V2(PO4)3 nanoparticles. United States: N. p., 2021. Web. doi:10.1039/d0nr08305d.
Wang, Dongdong, Yan, Qizhang, Li, Mingqian, Gao, Hongpeng, Tian, Jianhua, Shan, Zhongqiang, Wang, Ning, Luo, Jian, Zhou, Meng, & Chen, Zheng. Boosting the cycling stability of Ni-rich layered oxide cathode by dry coating of ultrastable Li3V2(PO4)3 nanoparticles. United States. https://doi.org/10.1039/d0nr08305d
Wang, Dongdong, Yan, Qizhang, Li, Mingqian, Gao, Hongpeng, Tian, Jianhua, Shan, Zhongqiang, Wang, Ning, Luo, Jian, Zhou, Meng, and Chen, Zheng. Thu . "Boosting the cycling stability of Ni-rich layered oxide cathode by dry coating of ultrastable Li3V2(PO4)3 nanoparticles". United States. https://doi.org/10.1039/d0nr08305d. https://www.osti.gov/servlets/purl/1853161.
@article{osti_1853161,
title = {Boosting the cycling stability of Ni-rich layered oxide cathode by dry coating of ultrastable Li3V2(PO4)3 nanoparticles},
author = {Wang, Dongdong and Yan, Qizhang and Li, Mingqian and Gao, Hongpeng and Tian, Jianhua and Shan, Zhongqiang and Wang, Ning and Luo, Jian and Zhou, Meng and Chen, Zheng},
abstractNote = {Nickel (Ni)-rich layered oxides such as LiNi0.6Co0.2Mn0.2O2 (NCM622) represent one of the most promising candidates for next-generation high-energy lithium-ion batteries (LIBs). However, the pristine Ni-rich cathode materials usually suffer from poor structural stability during cycling. In this work, we demonstrate a simple but effective approach to improve the cycling stability of the NCM622 cathode by dry coating of ultrastable Li3V2(PO4)3-carbon (LVP-C) nanoparticles, which leads to a robust composite cathode (NCM622/LVP-C) without sacrificing the specific energy density compared with pristine NCM622. The optimal NCM622/LVP-C composite presents a high specific capacity of 162 mA h g-1 at 0.5 C and excellent cycling performance with 85.0% capacity retention after 200 cycles at 2 C, higher than that of the pristine NCM622 (67.6%). Systematic characterization confirms that the LVP-C protective layer can effectively reduce the side reactions, restrict the cation mixing of NCM622 and improve its structural stability. Moreover, the NCM622/LVP-C||graphite full cells also show a commercial-level capacity of 3.2 mA h cm-2 and much improved cycling stability compared with NCM622/LVP-C||graphite full cells, indicating the great promise for low-cost, high-capacity and long-life LIBs.},
doi = {10.1039/d0nr08305d},
journal = {Nanoscale},
number = 5,
volume = 13,
place = {United States},
year = {Thu Jan 07 00:00:00 EST 2021},
month = {Thu Jan 07 00:00:00 EST 2021}
}

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