Abstract The phosphorus-modified SiO/C (PSC) composite is successfully prepared by a facile solid-state sintering route. Low-cost and eco-friendly anthracite and red phosphorus are respectively used as carbon source and phosphorus source. The obtained PSC powders present an amorphous nature. The introduced P plays a bridge role between SiO particles and C to relieve the stripping of carbon layer from SiO particles during cycle. As an anode for lithium ion battery, compared with the sample (SC) without P-incorporation, the PSC electrode delivers a much higher initial charge capacity of 846.2 mA h g−1 at 0.1 A g−1 and shows a better rate capability of 545.6 mA h g−1 at 0.5 A g−1 even after 300 cycles. The higher initial coulomb efficiency, larger reversible capacity and better cyclic performance are attributed to the early formation of SEI film, increased the electrical conductivity, improved structural stability and reduced charge transfer resistance.

中文翻译：

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锂离子电池用高性能磷改性SiO/C负极材料

摘要 通过简便的固态烧结方法成功制备了磷改性的SiO/C（PSC）复合材料。碳源和磷源分别采用低成本、环保的无烟煤和红磷。获得的 PSC 粉末呈现无定形性质。引入的 P 在 SiO 颗粒和 C 之间起桥梁作用，以减轻循环过程中碳层从 SiO 颗粒上的剥离。作为锂离子电池的负极，与未掺入 P 的样品 (SC) 相比，PSC 电极在 0.1 A g-1 时提供了更高的初始充电容量 846.2 mA hg-1，并显示出更好的倍率性能 545.6即使在 300 次循环后，mA hg-1 仍为 0.5 A g-1。更高的初始库仑效率、更大的可逆容量和更好的循环性能归因于 SEI 膜的早期形成，