3d Interconnected Structure-Based Lithium-Sulfur Batteries with High-Energy Densities

•A 3D interconnected structure-based cathode with high sulfur loading was fabricated.•For the 3D anode, molten Li was infused into the porous Ni networks.•The Li-infused Ni sponge anodes exhibited a stable cyclic performance.•The 3D structure improved the rate and cyclic performance of Li–S cells.•Li–S cells with 3D structure electrodes can enhance the cell energy density.