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<p>The demand is growing for effective and sustainable recycling of spent lithium cobalt oxide (LCO) batteries from consumer electronics to address resource depletion and environmental challenges. This work introduces a one-step solid-state sintering method, achieving an impressive capacity recovery rate of 94.9% for spent LCO cathode materials. Remarkably, the regenerated LCO achieves a capacity retention of 77.3% after 100 cycles at a cutoff voltage of 4.6 V, outperforming commercial LCO. These improvements are attributed to the formation of an amorphous surface coating and bulk doping, both introduced via a lithium-ion superconductor precursor. By providing a simple, scalable, and efficient solution for LCO regeneration, this research offers critical insights and strategies for the high-value recovery of cathode materials.</p>

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Li6.28Al0.24La3Zr2O12 brings spent-LiCoO2 outstanding cycling stability at 4.6 V

  • 期刊论文

  • 发表日期：

    2026年1月4日

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  • Ya Deng,
  • Hao Yang,
  • Guang Sun,
  • Yiming Dai,
  • Xuheng Jiang,
  • Yuwei Chen,
  • Shixiang Qiao,
  • Zhongqiang Wang,
  • Linsen Li,
  • Liwei Chen,
  • Yixiao Zhang,
  • Wei Luo

摘要

The demand is growing for effective and sustainable recycling of spent lithium cobalt oxide (LCO) batteries from consumer electronics to address resource depletion and environmental challenges. This work introduces a one-step solid-state sintering method, achieving an impressive capacity recovery rate of 94.9% for spent LCO cathode materials. Remarkably, the regenerated LCO achieves a capacity retention of 77.3% after 100 cycles at a cutoff voltage of 4.6 V, outperforming commercial LCO. These improvements are attributed to the formation of an amorphous surface coating and bulk doping, both introduced via a lithium-ion superconductor precursor. By providing a simple, scalable, and efficient solution for LCO regeneration, this research offers critical insights and strategies for the high-value recovery of cathode materials.