Graphene-templated formation of 3D tin-based foams for lithium ion storage applications with a long lifespan

3D tin-based foams with tailorable pore structures are developed through a graphene-templated freeze-drying approach. Pore structure effects on the electrochemical properties of the G/SnO2@C composite foam are investigated. Further the carbon coating endows the foam-like nanocomposite with superior cycling stability and rate capability.