Skip to main content
placeholder image

Understanding performance differences from various synthesis methods: A case study of spinel LiCr0.2Ni0.4Mn1.4O4 cathode material

Journal Article


Abstract


  • High voltage (5-V class) spinel LiCr0.2Ni0.4Mn1.4O4 is one of the most

    promising cathode materials to meet the energy requirements of lithium-ion batteries for

    electric vehicles and hybrid electric vehicles. For the mass production of this material (1 kg

    or higher), different synthesis routes will lead to different electrochemical performances,

    even with similar morphology and similar crystal structure obtained from laboratory X-ray

    diffraction, and the reason for this issue is still not clear. Herein, we have investigated the

    reasons for the different electrochemical performances resulting from three common

    synthesis routes (spray pyrolysis, coprecipitation, and sol−gel). Taking advantage of the

    high-resolution X-ray beam in synchrotron X-ray diffraction, we find that varying phase

    composition and the generated impurities, rather than the particle distribution, are likely to

    be the main reasons for the detected electrochemical variations. A higher amount of

    impurities will result in greater charge transfer resistance, inferior cycling stability, and

    more oxygen/lithium vacancies. Therefore, it is very important to obtain a deeper

    understanding with the help of higher-resolution X-rays and to provide better guidance for mass production of this cathode

    material for practical applications.

UOW Authors


  •   Chen, Mingzhe (external author)
  •   Hu, Zhe (external author)
  •   Wu, Zhenguo (external author)
  •   Hua, Wei-Bo (external author)
  •   Ozawa, Kiyoshi (external author)
  •   Gu, Qinfen (external author)
  •   Kang, Yong-Mook (external author)
  •   Guo, Xiaodong (external author)
  •   Chou, Shulei
  •   Dou, Shi Xue

Publication Date


  • 2016

Citation


  • Chen, M., Hu, Z., Wu, Z., Hua, W., Ozawa, K., Gu, Q., Kang, Y., Guo, X., Chou, S. & Dou, S. (2016). Understanding performance differences from various synthesis methods: A case study of spinel LiCr0.2Ni0.4Mn1.4O4 cathode material. ACS Applied Materials and Interfaces, 8 (39), 26051-26057.

Scopus Eid


  • 2-s2.0-84990248996

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2543

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 26051

End Page


  • 26057

Volume


  • 8

Issue


  • 39

Place Of Publication


  • United States

Abstract


  • High voltage (5-V class) spinel LiCr0.2Ni0.4Mn1.4O4 is one of the most

    promising cathode materials to meet the energy requirements of lithium-ion batteries for

    electric vehicles and hybrid electric vehicles. For the mass production of this material (1 kg

    or higher), different synthesis routes will lead to different electrochemical performances,

    even with similar morphology and similar crystal structure obtained from laboratory X-ray

    diffraction, and the reason for this issue is still not clear. Herein, we have investigated the

    reasons for the different electrochemical performances resulting from three common

    synthesis routes (spray pyrolysis, coprecipitation, and sol−gel). Taking advantage of the

    high-resolution X-ray beam in synchrotron X-ray diffraction, we find that varying phase

    composition and the generated impurities, rather than the particle distribution, are likely to

    be the main reasons for the detected electrochemical variations. A higher amount of

    impurities will result in greater charge transfer resistance, inferior cycling stability, and

    more oxygen/lithium vacancies. Therefore, it is very important to obtain a deeper

    understanding with the help of higher-resolution X-rays and to provide better guidance for mass production of this cathode

    material for practical applications.

UOW Authors


  •   Chen, Mingzhe (external author)
  •   Hu, Zhe (external author)
  •   Wu, Zhenguo (external author)
  •   Hua, Wei-Bo (external author)
  •   Ozawa, Kiyoshi (external author)
  •   Gu, Qinfen (external author)
  •   Kang, Yong-Mook (external author)
  •   Guo, Xiaodong (external author)
  •   Chou, Shulei
  •   Dou, Shi Xue

Publication Date


  • 2016

Citation


  • Chen, M., Hu, Z., Wu, Z., Hua, W., Ozawa, K., Gu, Q., Kang, Y., Guo, X., Chou, S. & Dou, S. (2016). Understanding performance differences from various synthesis methods: A case study of spinel LiCr0.2Ni0.4Mn1.4O4 cathode material. ACS Applied Materials and Interfaces, 8 (39), 26051-26057.

Scopus Eid


  • 2-s2.0-84990248996

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2543

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 26051

End Page


  • 26057

Volume


  • 8

Issue


  • 39

Place Of Publication


  • United States