Journal Article 2D materials 2D polymers 2D van der Waals heterostructures 7782-42-5 789U1901C5 CO2 batteries CO2 cathode Copper Graphite Hydrocarbons, Aromatic Janus transition metal dichalcogenides Macromolecular Substances Na metal anode Research Support, Non-U.S. Gov't band-like transport carbon nanotubes charge separation coloration efficiency conductive 2D coordination polymers conjugated polymers defective interfaces dendrite‐resistant electrical transport electrochemistry electrochromic devices electron spectroscopy and microscopy exciton-phonon coupling graphene production high mobility