(378d) Lithium Iron Phosphate-Graphene Composite Cathode Materials for Lithium Ion Battery with Improved Rate Capability

Lithium iron phosphate (LiFePO₄) is one of the most widely used cathode materials in currently used commercialized lithium-ion batteries because of its excellent thermal and chemical stability, low cost, and non-toxicity. However, it has low electrical conductivity and ionic conductivity, which limits its capacity and energy density at high discharge rates. Here, we proposed a facile spray coating techniques to fabricate LiFePO4-graphene hybrid cathode materials possessing high rate capability. We expect that electrically conductive graphene will offer improved overall conductivity and improved rate capability. The effects of the amount of graphene and reduction methods on electrochemical performance is currently under investigation.