Free-Standing Layer-By-Layer Hybrid Thin Film of Graphene-MnO2 Nanotube as Anode for Lithium Ion Batteries

Free-standing layer-by-layer assembled hybrid graphene-MnO2 nanotube (NT) thin films were prepared by an ultrafiltration technique and studied as anodes for lithium ion batteries. Each thin layer of graphene provides not only conductive pathways accelerating a conversion reaction of MnO2 but also buffer layers to maintain electrical contact with MnO2 NT during lithium insertion/extraction. In addition, the unique structures of the thin film …