Sonochemistry-enabled uniform coupling of SnO₂ nanocrystals with graphene sheets as anode materials for lithium-ion batteries.

ABSTRACT: SnO₂/graphene nanocomposite was successfully synthesized by a facile sonochemical method from SnCl₂ and graphene oxide (GO) precursors. In the sonochemical process, the Sn²⁺ is firstly dispersed homogeneously on the GO surface, then in situ oxidized to SnO₂ nanoparticles on both sides of the graphene nanosheets (RGO) obtained by the reduction of GO under continuous ultrasonication. Graphene not only provides a mechanical support to alleviate the volume changes of the SnO₂ anode and prevent nanoparticle agglomeration, but also serves as a conductive network to facilitate charge transfer and Li⁺ diffusion. When used as a lithium ion battery (LIB) anode, the SnO₂/graphene nanocomposite exhibits significantly i

SUBMITTER: Han X 

PROVIDER: S-EPMC9060868 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature