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May 22, 2026Nanoscale2 citations

Zirconium-doped precursor regulates surface-bulk structure of LiCoO2 for stable 4.5 V performance

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YDYuanyun DouYLYongchao LiuGSGuoqing Shen

Key Points

  • The aim is to evaluate how zirconium doping affects the surface and bulk structures of LiCoO2 to enhance stability at high voltages.
  • Zirconium doping was applied to lithium cobalt oxide (LiCoO2) precursors.
  • Performance was evaluated under high-voltage conditions (≥4.5 V).
  • Surface and bulk structural changes were analyzed post-experiment.
  • Zirconium-doped LiCoO2 exhibited enhanced structural stability at 4.5 V compared to undoped versions.
  • Significant reduction in interfacial side reactions was observed with zirconium doping.
  • Overall energy density improved due to reduced degradation under high-voltage conditions.

Abstract

Increasing the cut-off voltages of lithium cobalt oxide (LiCoO2) is crucial for improving its energy density, but this exacerbates bulk structural degradation and interfacial side reactions under high-voltage conditions (≥...

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Cite This Study

Dou et al. (2026) studied this question.

synapsesocial.com/papers/6a0ff362d674f7c03778c09ehttps://doi.org/10.1039/d6nr00885b
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