Shielding Si Armed with CoSi₂ Nanoplates and Dual-Carbon Shells: 3D Porous Microspheres as High-Performance Anodes for Li-Ion Batteries.

ABSTRACT: In this study, a novel multi-core-dual-shell strategy is employed to synthesize 3D porous microspheres. These microspheres consist of Si armed with CoSi₂ nanoplates multi-cores encapsulated within dual protective shells of metallic-Co nanocrystals embedded nitrogen-doped graphitic carbon (NGC) and polydopamine-derived carbon (PDA-C), denoted as Si@CoSi₂-Co/NGC@PDA-C, through a multistep synthesis process involving facile spray pyrolysis and post-heat-treatment. The Si as an active material is surrounded by an inactive buffer material of CoSi₂ with intrinsic low bulk resistivity and high chemical stability, enhancing the electrical interconnectivity and mechanical integrity of the nanostructure. The metallic-Co embedded porous NGC shell facilitates rapid ele

SUBMITTER: Lee JS 

PROVIDER: S-EPMC12561417 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature