title: Unique Cobalt Sulfide/Reduced Graphene Oxide Composite as an Anode for Sodium-Ion Batteries with Superior Rate Capability and Long Cycling Stability.
abstract: Exploitation of high-performance anode materials is essential but challenging to the development of sodium-ion batteries (SIBs). Among all proposed anode materials for SIBs, sulfides have been proved promising candidates due to their unique chemical and physical properties. In this work, a facile solvothermal method to in situ decorate cobalt sulfide (CoS) nanoplates on reduced graphene oxide (rGO) to build CoS@rGO composite is described. When evaluated as anode for SIBs, an impressive high specific capacity (540 mAh g(-1) at 1 A g(-1) ), excellent rate capability (636 mAh g(-1) at 0.1 A g(-1) and 306 mAh g(-1) at 10 A g(-1)), and extraordinarily cycle stability (420 mAh g(-1) at 1 A g(-1) after 1000 cycles) have been demonstrated by CoS@rGO composite for sodium storage. The synergetic effect between the CoS nanoplates and rGO matrix contributes to the enhanced electrochemical performance of the hybrid composite. The results provide a facile approach to fabricate promising anode materials for high-performance SIBs.
authors.affiliation: Department of Mechanical Engineering, National University of Singapore, Singapore, 11757, Singapore.
authors.forename: Shengjie
authors.initials: S
authors.lastname: Peng
authors.affiliation: Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, China.
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Han
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nayang Avenue, Singapore, 639798, Singapore.|TUM CREATE, 1 CREATE Way, #10-02 CREATE Tower, Singapore, 138602, Singapore.
authors.forename: Linlin
authors.initials: L
authors.lastname: Li
authors.affiliation: Key Laboratory of Advanced Energy Materials Chemistry (KLAEMC), Collaborative Innovation Center of Chemical Science and Engineering, Chemistry College, Nankai University, Tianjin, 300071, China.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Advanced Energy Materials Chemistry (KLAEMC), Collaborative Innovation Center of Chemical Science and Engineering, Chemistry College, Nankai University, Tianjin, 300071, China.
authors.forename: Fangyi
authors.initials: F
authors.lastname: Cheng
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nayang Avenue, Singapore, 639798, Singapore.|TUM CREATE, 1 CREATE Way, #10-02 CREATE Tower, Singapore, 138602, Singapore.
authors.forename: Madhavi
authors.initials: M
authors.lastname: Srinivansan
authors.affiliation: Department of Materials Science and Engineering, National University of Singapore, Singapore, 117546, Singapore.
authors.forename: Stefan
authors.initials: S
authors.lastname: Adams
authors.affiliation: Department of Mechanical Engineering, National University of Singapore, Singapore, 11757, Singapore.
authors.forename: Seeram
authors.initials: S
authors.lastname: Ramakrishna
keywords: anode materials; chalcogenides; cobalt; composites; electrochemistry; sodium-ion batteries