SiO–Sn2Fe@C composites with uniformly distributed Sn2Fe nanoparticles as fast-charging anodes for lithium-ion batteries

• DOI: 10.1016/j.esci.2022.10.006
• Publication Date: 2022-11-11T13:08:54Z
• Authors: Hanyin Zhang; Renzong Hu; Sirui Feng; Zhiqun Lin; Min Zhu
• Keywords: Lithium-ion batteries; TK7800-8360; TJ1-1570; SiO based; Mechanical engineering and machinery; 02 engineering and technology; Electronics; 0210 nano-technology; Anodes; Sn2Fe; Fast-charging

SiO-based materials represent a promising class of anodes for lithium-ion batteries (LIBs), with high theoretical capacity and appropriate safe Li-insertion potential. However, SiO experiences large volume change during the electrochemical reaction, low Li diffusivity, electron conductivity, resulting in degradation rate capability LIBs. Here, we report on rapid crafting SiO–Sn2[email protected] composites via one-step plasma milling process, leading to an alloy Sn Fe turn refining Sn2Fe into nanoparticles that are well dispersed nanosized, few-layer graphene matrix. The generated first process form stable network improve diffusivity conductivity. As anode material, composite manifests reversible capacities, superior cycling stability, excellent capability. retention is found be as 95% 84% at 100th 300th cycles under 0.3 ​C. During testing 3, 6, 11 ​C, retentions 71%, 60%, 50%, respectively. This study highlights this simple, strategy can further high-performance