title: A General Strategy to Fabricate Carbon-Coated 3D Porous Interconnected Metal Sulfides: Case Study of SnS/C Nanocomposite for High-Performance Lithium and Sodium Ion Batteries.
abstract: Transition metal sulfides have a great potential for energy storage due to the pronouncedly higher capacity (owing to conversion to metal or even alloy) than traditional insertion electrode materials. However, the poor cycling stability still limits the development and application in lithium and sodium ion batteries. Here, taking SnS as a model material, a novel general strategy is proposed to fabricate a 3D porous interconnected metal sulfide/carbon nanocomposite by the electrostatic spray deposition technique without adding any expensive carbonaceous materials such as graphene or carbon nanotube. In this way, small nanorods of SnS are generated with sizes of ≈10-20 nm embedded in amorphous carbon and self-assembled into a 3D porous interconnected nanocomposite. The SnS:C is directly deposited on the Ti foil as a current collector and neither conductive additives nor binder are needed for battery assembly. Such electrodes exhibit a high reversible capacity, high rate capability, and long cycling stability for both lithium and sodium storage.
authors.affiliation: Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany.
authors.forename: Changbao
authors.initials: C
authors.lastname: Zhu
authors.affiliation: Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany.
authors.forename: Peter
authors.initials: P
authors.lastname: Kopold
authors.affiliation: CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China Anhui Hefei 230026 P. R. China.
authors.forename: Weihan
authors.initials: W
authors.lastname: Li
authors.affiliation: Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany.
authors.forename: Peter A
authors.initials: PA
authors.lastname: van Aken
authors.affiliation: Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany.
authors.forename: Joachim
authors.initials: J
authors.lastname: Maier
authors.affiliation: Max Planck Institute for Solid State Research Heisenbergstr. 1 Stuttgart 70569 Germany; CAS Key Laboratory of Materials for Energy Conversion Department of Materials Science and Engineering University of Science and Technology of China Anhui Hefei 230026 P. R. China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Yu
keywords: 3D porous interconnected composite; SnS; electrostatic spray deposition (ESD); lithium storage; metal sulfides; sodium storage