Porous carbon-confined Co _x S _y nanoparticles derived from ZIF-67 for boosting lithium-ion storage.

ABSTRACT: Reasonable regulation and synthesis of hollow nanostructure materials can provide a promising electrode material for lithium-ion batteries (LIBs). In this work, utilizing a metal-organic framework (MOF, ZIF-67) as the raw material and template, a composite of Co _x S _y with a carbon shell is successfully formed through a hydrothermal vulcanization and a subsequent high temperature sintering process. The as-obtained Co _x S _y (700) material sintered at 700 °C has a large specific surface area, and at the same time possesses a hollow carbon shell structure. Benefiting from unique structural advantages, the volume change during the electrochemical reaction can be well alleviated, and thus the structural stability is greatly

SUBMITTER: Su X 

PROVIDER: S-EPMC8978921 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature