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. 2022 May 3;14:121. doi: 10.1007/s40820-022-00862-0

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© The Author(s) 2022

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Fig. 4 — a Chronoamperometric curves of Bi₂O₂(CO₃)_xCl_y recorded from CO₂-saturated 0.5 M KHCO₃ solution under different cathodic potentials. b, c Plots of HCOOH partial current density and Faradic efficiency against catholic potential for Bi₂O₂(CO₃)_xCl_y- and Bi₂O₂CO₃-catalyzed CO₂RR. d Chronoamperometric curves and FE_HCOOH of Bi₂O₂(CO₃)_xCl_y at − 0.8 V versus RHE. e Free energy diagrams of Bi₂O₂(CO₃)_xCl_y- and Bi₂O₂CO₃-catalyzed CO₂ reduction to HCOOH. f PDOSs plots of Bi₂O₂(CO₃)_xCl_y- and Bi₂O₂CO₃-catalyzed CO₂ reduction to HCOOH