Rationally engineering a binary SnS_0.5Se_0.5/carbon nest-coated Si nanosphere for a high-performance lithium-ion battery anode.

ABSTRACT: Although the silicon (Si) anode has a high theoretical capacity, large volume-expansion would lead to rapid capacity decay. Here, a core-nest structured Si@SnS_0.5Se_0.5/carbon (Si@SnS_0.5Se_0.5/C) is developed using silicon as the core and SnS_0.5Se_0.5/carbon as a binary nest. Both the core-nest structure and carbon matrix enable a stable hybrid structure during charge and discharge. The binary nest Si@SnS_0.5Se_0.5/C nanospheres as a lithium-ion battery anode display good capacity, recoverable rate-performance, and enhanced electron and ion transfer properties. A capacity of 1318 mA h g^-1 and a high coulombic efficiency of 98.9% after 50 cycles at 0.1 A g^-1 are achievable, and the capac

SUBMITTER: Zhang H 

PROVIDER: S-EPMC11388083 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature