title: Electrostatic spray deposition of porous SnO₂/graphene anode films and their enhanced lithium-storage properties.
abstract: Porous SnO₂/graphene composite thin films are prepared as anodes for lithium ion batteries by the electrostatic spray deposition technique. Reticular-structured SnO₂ is formed on both the nickel foam substrate and the surface of graphene sheets according to the scanning electron microscopy (SEM) results. Such an assembly mode of graphene and SnO₂ is highly beneficial to the electrochemical performance improvement by increasing the electrical conductivity and releasing the volume change of the anode. The novel engineered anode possesses 2134.3 mA h g⁻¹ of initial discharge capacity and good capacity retention of 551.0 mA h g⁻¹ up to the 100th cycle at a current density of 200 mA g⁻¹. This anode also exhibits excellent rate capability, with a reversible capacity of 507.7 mA h g⁻¹ after 100 cycles at a current density of 800 mA g⁻¹. The results demonstrate that such a film-type hybrid anode shows great potential for application in high-energy lithium-ion batteries.
authors.affiliation: State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China. yzjiang@zju.edu.cn
authors.forename: Yinzhu
authors.initials: Y
authors.lastname: Jiang
authors.forename: Tianzhi
authors.initials: T
authors.lastname: Yuan
authors.forename: Wenping
authors.initials: W
authors.lastname: Sun
authors.forename: Mi
authors.initials: M
authors.lastname: Yan
mesh_terms: D000042:Absorption; D011211:Electric Power Supplies; D004566:Electrodes; D004595:Electroplating / Q000379:methods*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005740:Gases / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry* / Q000302:isolation & purification; D008567:Membranes, Artificial; D055672:Static Electricity; D017971:Tin Compounds / Q000737:chemistry*
chemical_list: D005740:Gases; D008567:Membranes, Artificial; D017971:Tin Compounds; D006108:Graphite; D008094:Lithium; C045358:stannic oxide