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Transition metal-doped Ni-rich layered cathode materials for durable Li-ion batteries

Author

Listed:
  • H. Hohyun Sun

    (The University of Texas at Austin)

  • Un-Hyuck Kim

    (Hanyang University)

  • Jeong-Hyeon Park

    (Hanyang University)

  • Sang-Wook Park

    (Ulsan National Institute of Science and Technology (UNIST))

  • Dong-Hwa Seo

    (Ulsan National Institute of Science and Technology (UNIST))

  • Adam Heller

    (The University of Texas at Austin)

  • C. Buddie Mullins

    (The University of Texas at Austin
    The University of Texas at Austin)

  • Chong S. Yoon

    (Hanyang University)

  • Yang-Kook Sun

    (Hanyang University)

Abstract

Doping is a well-known strategy to enhance the electrochemical energy storage performance of layered cathode materials. Many studies on various dopants have been reported; however, a general relationship between the dopants and their effect on the stability of the positive electrode upon prolonged cell cycling has yet to be established. Here, we explore the impact of the oxidation states of various dopants (i.e., Mg2+, Al3+, Ti4+, Ta5+, and Mo6+) on the electrochemical, morphological, and structural properties of a Ni-rich cathode material (i.e., Li[Ni0.91Co0.09]O2). Galvanostatic cycling measurements in pouch-type Li-ion full cells show that cathodes featuring dopants with high oxidation states significantly outperform their undoped counterparts and the dopants with low oxidation states. In particular, Li-ion pouch cells with Ta5+- and Mo6+-doped Li[Ni0.91Co0.09]O2 cathodes retain about 81.5% of their initial specific capacity after 3000 cycles at 200 mA g−1. Furthermore, physicochemical measurements and analyses suggest substantial differences in the grain geometries and crystal lattice structures of the various cathode materials, which contribute to their widely different battery performances and correlate with the oxidation states of their dopants.

Suggested Citation

  • H. Hohyun Sun & Un-Hyuck Kim & Jeong-Hyeon Park & Sang-Wook Park & Dong-Hwa Seo & Adam Heller & C. Buddie Mullins & Chong S. Yoon & Yang-Kook Sun, 2021. "Transition metal-doped Ni-rich layered cathode materials for durable Li-ion batteries," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-26815-6
    DOI: 10.1038/s41467-021-26815-6
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    References listed on IDEAS

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    1. Un-Hyuck Kim & Geon-Tae Park & Byoung-Ki Son & Gyeong Won Nam & Jun Liu & Liang-Yin Kuo & Payam Kaghazchi & Chong S. Yoon & Yang-Kook Sun, 2020. "Heuristic solution for achieving long-term cycle stability for Ni-rich layered cathodes at full depth of discharge," Nature Energy, Nature, vol. 5(11), pages 860-869, November.
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    Cited by:

    1. Zhongsheng Dai & Zhujie Li & Renjie Chen & Feng Wu & Li Li, 2023. "Defective oxygen inert phase stabilized high-voltage nickel-rich cathode for high-energy lithium-ion batteries," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    2. Gogwon Choe & Hyungsub Kim & Jaesub Kwon & Woochul Jung & Kyu-Young Park & Yong-Tae Kim, 2024. "Re-evaluation of battery-grade lithium purity toward sustainable batteries," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    3. Ke Chen & Pallab Barai & Ozgenur Kahvecioglu & Lijun Wu & Krzysztof Z. Pupek & Mingyuan Ge & Lu Ma & Steven N. Ehrlich & Hui Zhong & Yimei Zhu & Venkat Srinivasan & Jianming Bai & Feng Wang, 2024. "Cobalt-free composite-structured cathodes with lithium-stoichiometry control for sustainable lithium-ion batteries," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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