Low conductivity and volumetric expansion are the core factors hindering the practical application of high-capacity silicon anodes. 3D spindle mesh structure has been electrospun with the Si-Ti alloy nanoparticles fabricated by DC arc plasma evaporation. When served as a flexible, self-supporting anode of Lithium-ion batteries, high discharge capacity has been achieved with outstanding rate performance. Additionally, the electrode retains a capacity of 462.2 mAh/g after 500 cycles at a current density of 1 A·g⁻¹, exhibiting superior cycling stability with a coulombic efficiency maintained above 99 %. The integrated self-supporting electrode minimized the impact of binders, conductive agents, and current collectors, significantly reducing side reactions at the electrode–electrolyte interface. This innovative structure showcases excellent electrochemical performance as a promising candidate for Lithium-ion battery anodes.

中文翻译：

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将 Si-Ti 合金纳米颗粒静电纺丝成 3D 纺锤网结构：具有内置高导电框架的集成自支撑阳极


低电导率和体积膨胀是阻碍高容量硅负极实际应用的核心因素。3D 纺锤形网状结构已使用直流电弧等离子体蒸发制备的 Si-Ti 合金纳米颗粒进行静电纺丝。当用作锂离子电池的柔性、自支撑阳极时，可实现高放电容量和出色的倍率性能。此外，该电极在 1 A·g ⁻¹ 的电流密度下循环 500 次后仍保持 462.2 mAh/g 的容量，表现出优异的循环稳定性，库仑效率保持在 99% 以上。集成的自支撑电极最大限度地减少了粘合剂、导电剂和集流体的影响，显著减少了电极-电解质界面的副反应。这种创新结构展示了优异的电化学性能，是锂离子电池负极的有前途的候选者。