“…The overall ZICs performance of carbon materials relies on the proper mesopore structure and surface functional groups, which provide short diffusion paths for enhancing ion and electrolyte transport and pseudocapacitive redox reactions. Surface functionalization of carbons with oxygen-containing functional groups, such as C–OH and CO, is advocated as an ancillary strategy to modulate and amplify the pseudocapacitive behavior of ZICs. , This enhancement occurs through the following reactions: C + X – = X-C (X – : anions) and C–OH + Zn 2+ + 2e = C–O–Zn or C–OH + 2Zn 2+ + e = C–O–Zn + H + . , Although the oxygen-containing carbons have many advantages for ZICs, only a few works about the CO 2 -C were reported. , Li and Yang et al reported a CO 2 -derived OMC for ZICs . OMC was innovatively obtained through bidirectional electrolytic reduction of CO 2 in a molten Li 2 CO 3 –Na 2 CO 3 –K 2 CO 3 .…”