Anodes Graphene 6 Anode material 3 Metal ions 3 Sodium-ion batteries 3 Coulombic efficiency 2 Cycling stability 2 Electronic conductivity 2 Reduced Graphene Oxide 2 Reversible capacity 2 Sodium compounds 2 Solid electrolytes 2 Synthesised 2 3D networks 1 Alloys 1 Amorphous carbon 1 Amorphous carbon layer 1 Anode material for lithium ion batteries 1 Bismuth compounds 1 Carbon dioxide 1 Cathodes 1 Cells 1 CoSe2 1 Cobalt compounds 1 Combination mechanisms 1 Conversion mechanism 1 Cycle stability 1 Cytology 1 Dendrite growth 1 Density functional theory 1