Influence of graphene oxide on electrochemical performance of Si anode material for lithium-ion batteries-中国期刊网

摘要 WehavedevelopedaSi/grapheneoxideelectrodesynthesizedviaultrasonication-stirringmethodunderalkalinecondition.Scanningelectronmicroscopy(SEM),transmissionelectronmicroscope(TEM),EDSdot-mappingandhigh-resolutiontransmissionelectronmicroscopy(HRTEM)resultsshowthatSiparticlesareevenlydispersedonthegrapheneoxidesheets.Theelectrochemicalperformancewasinvestigatedbygalvanostaticcharge/dischargetestsatroomtemperature.TheresultsrevealedthatSi/grapheneoxideelectrodeexhibitedahighreversiblecapacityof2825mAh/gwithacoulombicefficiencyof94.6%at100mA/gafter15cyclesandacapacityretentionof70.8%after105cyclesat4000mA/g.Theseperformanceparametersshowagreatpotentialinthehigh-performancebatteriesapplicationforportableelectronics,electricvehiclesandrenewableenergystorage.

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Influence of graphene oxide on electrochemical performance of Si anode material for lithium-ion batteries

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Influence of graphene oxide on electrochemical performance of Si anode material for lithium-ion batteries

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