Anodes Anode material 1 Anode material for lithium ion batteries 1 Coulombic efficiency 1 Cycling stability 1 Doping (additives) 1 Electric conductivity 1 Electronic conductivity 1 Energy efficiency 1 Fullerenes 1 Graphene 1 Graphene oxides 1 Graphitic Carbon Nitride 1 High energy densities 1 High reversible capacities 1 High-performance anode materials 1 Hybrid composite 1 Hybrid composites 1 Interlayer spacings 1 Lithium-ion batteries 1 Manganese oxide 1 Metal ions 1 Mn3O4-NGO 1 N-doped 1 Nano-octahedron 1 Nano-octahedrons 1 Nitrogen doped graphene 1 Reduced Graphene Oxide 1 Reversible capacity 1 Sodium-ion batteries 1