Supercritical CO₂ Assisted Solvothermal Preparation of CoO/Graphene Nanocomposites for High Performance Lithium-Ion Batteries.

ABSTRACT: Supercritical CO₂ (scCO₂) is often used to prepare graphene/metal oxide nanocomposite anodes for high performance lithium-ion batteries (LIBs) by the assisted solvothermal method due to its low viscosity, high diffusion, zero surface tension and good surface wettability. However, the formation mechanism of metal oxides and the combination mechanism between metal oxides and graphene in this system are superficial. In this work, a cobalt monoxide/graphene (CoO/G) nanocomposite is fabricated via the scCO₂ assisted solvothermal method followed by thermal treatment. We elucidate the mechanism that amorphous intermediates obtain by the scCO₂ assisted solvothermal method, and then ultrafine CoO nanoparticles are crystallized during the heat treatment. I

SUBMITTER: Yuan R 

PROVIDER: S-EPMC7999444 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature