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We prepared a Mo-doped cathode material by doping Mo into the single-crystal layered ternary cathode material(LiNi0.5Co0.2Mn0.3O2,NCM) via metal cation doping strategy.Moreover, we studied the effects of Mo doping on the electrochemical performance and stability of NCM.The results show that doping Mo in transition metals can inhibit the grain growth of NCM during the calcination process, thereby obtaining more refined grains.Grain refinement can strengthen the lattice structure of NCM,inhibit the irreversible phase transformation generated during the Li+ transport process, and promote the diffusion of Li+.At the optimal doping amount, Mo-NCM exhibits a high initial discharge specific capacity of 192.4 mAh·g-1,and maintains a discharge specific capacity retention rate of 68.6% after 100 cycles at a high rate of 1.0 C within the high voltage range of 2.0-4.5 V.The study provides a new idea for preparing lithium-ion batteries with high cycling stability.
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Basic Information:
China Classification Code:TM912
Citation Information:
[1]GE Haiqing,XIONG Chunyan.Enhancement on Stability of Single-Crystal Ternary Cathode Material in Lithium-Ion Battery by Grain Ultra-Refinement[J].Chemistry ＆ Bioengineering,2026,43(05):9-15.
Fund Information:
国家自然科学基金项目(51702239); 湖北省重点研发项目(2024BCB074); 湖北省教育厅项目(B2023041); 华中科技大学材料成型与模具技术国家重点实验室开放课题研究基金项目(X19D003)
2025-07-08
2025-07-08
2025-07-08