Electrostatic spray deposition of porous SnO₂/graphene anode films and their enhanced lithium-storage properties

ACS Appl Mater Interfaces. 2012 Nov;4(11):6216-20. doi: 10.1021/am301788m. Epub 2012 Nov 2.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Electric Power Supplies*
  • Electrodes*
  • Electroplating / methods*
  • Equipment Design
  • Equipment Failure Analysis
  • Gases / chemistry
  • Graphite / chemistry*
  • Lithium / chemistry*
  • Lithium / isolation & purification
  • Membranes, Artificial*
  • Static Electricity
  • Tin Compounds / chemistry*

Substances

  • Gases
  • Membranes, Artificial
  • Tin Compounds
  • Graphite
  • Lithium
  • stannic oxide