Preparing Si/C composite material with uniformly dispersed Si particles and stable electrode structure remains a huge challenge. In this study, a Si/C composite material with reinforced interfacial interaction (Si&AG) was successfully synthesized. Utilizing the HF-plasma technique, the metallurgical Si with large particle size was evaporated and nucleated, resulting in nanocrystallization and uniform dispersion onto the graphite surface. More importantly, a robust but thin SiC layer formed at the contact region ensures a steadfast adhesion of Si onto graphite. As anode for lithium-ion batteries, Si&AG exhibits a remarkable ICE of 87.9% and an impressive capacity retention of 78.1% after 500 cycles at 0.1 A g^–1. Even under high current densities, it consistently demonstrates a remarkable electrochemical performance (149.6 mAh g^–1 at 3 A g^–1). These exceptional properties can be attributed to the reinforced interfacial interaction facilitated by a robust but thin SiC layer, which endows the electrode with a stable structure and consequently performs excellent electrochemical performances.

中文翻译：

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增强硅和石墨之间的界面相互作用以提高锂离子电池的循环稳定性

制备具有均匀分散的Si颗粒和稳定的电极结构的Si/C复合材料仍然是一个巨大的挑战。本研究成功合成了具有增强界面相互作用的Si/C复合材料（Si&AG）。利用高频等离子体技术，大粒径冶金硅被蒸发并成核，从而实现纳米晶化并均匀分散到石墨表面。更重要的是，在接触区域形成的坚固而薄的碳化硅层确保了硅在石墨上的牢固粘附。作为锂离子电池负极，Si&AG 在 0.1 A g ^–1下循环 500 次后表现出 87.9% 的卓越 ICE 和 78.1% 的令人印象深刻的容量保持率。即使在高电流密度下，它也始终表现出卓越的电化学性能（3 A g ^{–1时为 149.6 mAh g –1}）。这些优异的性能可归因于坚固但薄的 SiC 层促进的增强界面相互作用，这赋予电极稳定的结构，从而表现出优异的电化学性能。