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<p>Titanium niobate (TiNb₂O₇, TNO) has attracted increasing attention as a next-generation anode material for lithium-ion batteries (LIBs), due to its relatively high working potential, structural stability, and theoretical capacity surpassing that of graphite. However, its low intrinsic electronic conductivity and limited lithium-ion diffusion remain critical challenges that hinder its widespread application. To address these limitations, we employed a morphology-engineering strategy based on surfactant-assisted synthesis using Pluronic F127. TNO samples were prepared via a one-pot solvothermal method with varying concentrations of F127 (2, 5, and 8 wt%), and the influence of morphology on electrochemical performance was systematically investigated. The optimized sample containing 5 wt% F127 exhibited uniformly distributed nanoparticles assembled into hierarchical microspheres. This tailored structure resulted in enhanced electrochemical behavior, delivering a high discharge capacity of 195 mAh/g at 1&#xa0;C with 90% capacity retention after 200 cycles, and 67 mAh/g at 20&#xa0;C. Additionally, a comparative life cycle assessment (LCA) revealed that although the use of F127 introduced a slight increase in environmental impact, it significantly improved electrochemical performance, highlighting the trade-off between performance and sustainability. These results demonstrate the effectiveness of F127-assisted morphology control as a scalable, eco-conscious strategy for high-performance LIB anode materials.</p>

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Balancing electrochemical performance and environmental impact of Ti–Nb oxide lithium-ion battery anodes

  • 期刊论文

  • 发表日期：

    2025年10月30日

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  • Amirreza Shahbazian,
  • Fatemeh Mozaffarpour,
  • Nafiseh Hassanzadeh,
  • Ehsan Vahidi

摘要

Titanium niobate (TiNb₂O₇, TNO) has attracted increasing attention as a next-generation anode material for lithium-ion batteries (LIBs), due to its relatively high working potential, structural stability, and theoretical capacity surpassing that of graphite. However, its low intrinsic electronic conductivity and limited lithium-ion diffusion remain critical challenges that hinder its widespread application. To address these limitations, we employed a morphology-engineering strategy based on surfactant-assisted synthesis using Pluronic F127. TNO samples were prepared via a one-pot solvothermal method with varying concentrations of F127 (2, 5, and 8 wt%), and the influence of morphology on electrochemical performance was systematically investigated. The optimized sample containing 5 wt% F127 exhibited uniformly distributed nanoparticles assembled into hierarchical microspheres. This tailored structure resulted in enhanced electrochemical behavior, delivering a high discharge capacity of 195 mAh/g at 1 C with 90% capacity retention after 200 cycles, and 67 mAh/g at 20 C. Additionally, a comparative life cycle assessment (LCA) revealed that although the use of F127 introduced a slight increase in environmental impact, it significantly improved electrochemical performance, highlighting the trade-off between performance and sustainability. These results demonstrate the effectiveness of F127-assisted morphology control as a scalable, eco-conscious strategy for high-performance LIB anode materials.