Evolution of Reduced Graphene Oxide-SnS₂ Hybrid Nanoparticle Electrodes in Li-Ion Batteries.

ABSTRACT: Hybrid nanomaterials where active battery nanoparticles are synthesized directly onto conductive additives such as graphene hold the promise of improving the cyclability and energy density of conversion and alloying type Li-ion battery electrodes. Here we investigate the evolution of hybrid reduced graphene oxide-tin sulfide (rGO-SnS₂) electrodes during battery cycling. These hybrid nanoparticles are synthesized by a one-step solvothermal microwave reaction which allows for simultaneous synthesis of the SnS₂ nanocrystals and reduction of GO. Despite the hybrid architecture of these electrodes, electrochemical impedance spectroscopy shows that the impedance doubles in about 25 cycles and subsequently gradually increases, which may be caused by an irreversible surface p

SUBMITTER: Modarres MH 

PROVIDER: S-EPMC5547442 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature