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April 16, 2026Nature CommunicationsOpen Access

Oxidation-reconstructed Li+ transport enables high-tap-density single-crystal regeneration of spent LiNi0.5Co0.2Mn0.3O2 positive electrodes

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Authors

SHShuaipeng HaoYZYi ZhangSLShuaiwei Liu

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Overview

Direct regeneration enhances lithium-ion battery performance and recycling potential in spent electrodes, indicating a sustainable solution.

Key Points

  • This research aims to develop an effective regeneration method for spent LiNi0.5Co0.2Mn0.3O2 electrodes using oxidation techniques.
  • Proposed an oxidation strategy to enhance structural and morphological properties.
  • Studied the transformation of surface NiO to NiOOH during oxidation.
  • Analyzed the effect of bulk Ni2+ to Ni3+ oxidation on lithium ion transport.
  • Observed agglomeration of uniform precursor particles into large single-crystals during calcination.
  • Regenerated material achieved a high tap density of 2.57 g/cm3.
  • Retained 80.2% of its initial capacity after 600 charging cycles.
  • Provided improved Li+ diffusion pathways and uniformity in particle morphology.

Cite This Study

Hao et al. (2026) studied this question.

synapsesocial.com/papers/69e07bc12f7e8953b7cbd673https://doi.org/10.1038/s41467-026-71730-3
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