摘要
A novel hybrid,highly dispersed spinel Co-Mo sulfide nanoparticles on reduced graphene oxide(Co3S4/CoMo2S4@rGO),is reported as anode for lithium and sodium ion storage.The hybrid is synthesized by one-step hydrothermal method but exhibits excellent lithium and sodium storage performances.The as-synthesized Co3S4/CoMo2S4@rGO presents reversible capacity of 595.4 mA·h·g^−1 and 408.8 mA·h·g^−1 after 100 cycles at a current density of 0.2 A·g^−1 for lithium and sodium ion storages,respectively.Such superior performances are attributed to the unique composition and structure of Co3S4/CoMo2S4@rGO.The rGO provides a good electronically conductive network and ensures the formation of spinel Co3S4/CoMo2S4 nanoparticles,the Co3S4/CoMo2S4 nanoparticles provide large reaction surface for lithium and sodium intercalation/deintercalation,and the spinel structure allows fast lithium and sodium ion diffusion in three dimensions.
基金
supported by the National Natural Science Foundation of China(No.21872058)
the Key Project of Science and Technology in Guangdong Province(No.2017A010106006).
作者简介
Address Correspondence to:Xiang Liu,iamxliu@njtech.edu.cn;Address Correspondence to:Guozhong Cao,gzcao@11.washington.edu;Address Correspondence to:Weishan Li,liwsh@scnu.edu.cn。
