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Enhanced cycling stability and rate capability of Na0.75Ni0.33Mn0.67O2 cathode material by Zn/F co-doping for sodium-ion batteries.

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Title: Enhanced cycling stability and rate capability of Na0.75Ni0.33Mn0.67O2 cathode material by Zn/F co-doping for sodium-ion batteries.
Authors: Shen, Tao1 (AUTHOR), Chen, Hongxia1 (AUTHOR), Fu, Hu1 (AUTHOR), Zhang, Xinyu1 (AUTHOR), Zhou, Mengcheng1 (AUTHOR), Xu, Shuangwu1 (AUTHOR), Hu, Hanchi1 (AUTHOR), Li, Haichen1 (AUTHOR), Zhou, Hongming1 (AUTHOR) zhouhongming@csu.edu.cn
Source: Journal of Materials Science: Materials in Electronics. Mar2025, Vol. 36 Issue 7, p1-15. 15p.
Abstract: P2-type layered transition metal oxides with high theoretical specific capacity and operating voltage are considered as one of the highly promising cathode materials for sodium-ion batteries, but the poor cycling stability attributed to the P2-O2 phase transition and Na+/vacancy ordering limits their practical applications. In this paper, a hydrothermal method is used to investigate the improvement of the electrochemical properties of Na0.75Ni0.33Mn0.67O2 by Zn/F synergistic doping. The synergistic modification of Zn/F not only adjusts the valence distribution of Mn and improves the specific capacity, but also suppresses the phase transition under high voltage and the dissolution of transition metal ions. In particular, Na0.75Ni0.23Mn0.67Zn0.1O1.95F0.05 (ZF-5) has excellent cycling performance (82.1% capacity retention after 100 cycles at 1C), compared to just 11.6% for the Na0.75Ni0.33Mn0.67O2(ZF-0). Above that, the rate performance is also significantly improved, with the specific capacity reaching 94.7 mAh g−1 even at a high current density of 5 C. Therefore, the Zn/F double doping modification strategy provides a simple and effective method for designing high-performance layered oxide cathode materials. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Mar2025, Vol. 36 Issue 7, p1-15. 15p.
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: P2-type layered transition metal oxides with high theoretical specific capacity and operating voltage are considered as one of the highly promising cathode materials for sodium-ion batteries, but the poor cycling stability attributed to the P2-O2 phase transition and Na+/vacancy ordering limits their practical applications. In this paper, a hydrothermal method is used to investigate the improvement of the electrochemical properties of Na0.75Ni0.33Mn0.67O2 by Zn/F synergistic doping. The synergistic modification of Zn/F not only adjusts the valence distribution of Mn and improves the specific capacity, but also suppresses the phase transition under high voltage and the dissolution of transition metal ions. In particular, Na0.75Ni0.23Mn0.67Zn0.1O1.95F0.05 (ZF-5) has excellent cycling performance (82.1% capacity retention after 100 cycles at 1C), compared to just 11.6% for the Na0.75Ni0.33Mn0.67O2(ZF-0). Above that, the rate performance is also significantly improved, with the specific capacity reaching 94.7 mAh g−1 even at a high current density of 5 C. Therefore, the Zn/F double doping modification strategy provides a simple and effective method for designing high-performance layered oxide cathode materials. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Materials Science: Materials in Electronics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              M: 03
              Text: Mar2025
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