Previous research established that Si–Sn–C ternary composite electrodes composed of carbon nanofibers (CNFs) having robust double-hole structures filled with Si and SnO_x nanoparticles displayed excellent electrochemical performance due to the thermodynamic contribution of Sn. This study reports simple and highly commercial ternary composite electrodes. By electrospinning and subsequent thermal treatment, Si and Sn nanoparticles were dispersed in solid CNFs to form Si–Sn–SC nanofibers, or they were incorporated into a core of hollow CNFs to form Si–Sn−HC nanofibers. The rate performances of these two ternary electrodes displayed quite good retention because of the ternary composition, but their rate performances differed at high current densities (5000 and 10,000 mA g^–1); the core/shell structure of the Si–Sn−HC nanofibers was more beneficial for rate performance retention than the Si–Sn–SC nanofibers having intimate electrical contact of Sn and Si with the carbon matrix. Improved cycling performances also resulted from the structure of the Si–Sn−HC nanofibers. The core/shell structured Si–Sn–C ternary composite anode thus has an advantageous structure for high-power Li-ion batteries having long-term stability.

先前的研究表明，由具有填充有Si和SnO _x纳米颗粒的坚固双孔结构的碳纳米纤维（CNF）组成的Si-Sn-C三元复合电极由于Sn的热力学作用而显示出优异的电化学性能。这项研究报告了简单且高度商业化的三元复合电极。通过静电纺丝和随后的热处理，Si和Sn纳米颗粒分散在固态CNF中以形成Si–Sn–SC纳米纤维，或者将它们掺入中空CNF的芯中以形成Si–Sn–HC纳米纤维。由于三元组成，这两个三元电极的倍率性能显示出很好的保留性，但是在高电流密度（5000和10,000  mA  g ^–1）下，它们的倍率性能有所不同）; Si-Sn-HC纳米纤维的核/壳结构比具有Sn和Si与碳基体紧密电接触的Si-Sn-SC纳米纤维更有利于保持速率性能。Si-Sn-HC纳米纤维的结构也改善了循环性能。因此，核/壳结构的Si-Sn-C三元复合阳极对于具有长期稳定性的高功率锂离子电池具有有利的结构。