articleJournal of the American Chemical SocietyJan 3, 2025GREEN OA

Precise Synthesis of 4.75 V-Tolerant LiCoO 2 with Homogeneous Delithiation and Reduced Internal Strain

MZMin ZhangWHWeiyuan HuangJTJiayi TangZLZhaoguo LiuCSChuanchao Sheng

Collaborative Innovation Center of Advanced Microstructures · Nanjing University · +2 more institutions

PubMed
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Abstract

The rapid advancements in 3C electronic devices necessitate an increase in the charge cutoff voltage of LiCoO2 to unlock a higher energy density that surpasses the currently available levels. However, the structural devastation and electrochemical decay of LiCoO2 are significantly exacerbated, particularly at ≥4.5 V, due to the stress concentration caused by more severe lattice expansion and shrinkage, coupled with heterogeneous Li+ intercalation/deintercalation reactions. Herein, employing the molten-salt synthesis technique, we propose a universal morphology-shaping strategy to attain bulk reaction homogeneity and reduce internal strains, even at extremely high charge voltages. The newly designed flattened…

Citation impact

43
total citations
FWCI
25.13
Percentile
100%
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43
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Authors

13

Topics & keywords

Topics
Keywords
  • Chemistry
  • Homogeneous
  • Strain (injury)
  • Chemical engineering
  • Thermodynamics
  • Mineralogy
UN Sustainable Development Goals
  • Zero hunger
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