Hybrid Plasma Spray Synthesis of Spherical Si_0.8Ge_0.2 Alloy Nanoparticles for Lithium-Ion Battery Anodes.

ABSTRACT: Despite its ultrahigh theoretical capacity, silicon anodes for lithium-ion batteries suffer from severe capacity decay caused by over 300% volume changes during cycling. While Si-Ge alloying and spherical nanostructuring have been demonstrated to improve ionic/electronic transport and mechanical resilience, scalable synthesis of homogeneous, sub-150 nm SiGe nanospheres from low-cost precursors remains challenging. Here, we report a hybrid plasma-spraying physical vapor deposition (PS-PVD) process that directly converts metallurgical-grade Si and Ge powders into phase-pure Si_0.8Ge_0.2 nanospheres (<100 nm) at a continuous rate of 1 g min^-1. The co-condensation mechanism during formation was elucidated through molecular dynamics (MD) simulations, which reveale

SUBMITTER: Wang WB 

PROVIDER: S-EPMC12655563 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature