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Science China Press

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(a) Cyclic voltammetry curves for CO2 reduction on carbon film electrode and metal-free carbon nanofibres (CNFs) electrode. (b) Absolute current density for CO2 reduction at different electrodes in pure [Emim]BF4 electrolyte. (c) Current density for CNFs catalyst with respect to H2O mole fraction (%) in [Emim]BF4. (d) Chronoamperogram for CNFs catalyst in pure [Emim]BF4. (e) Proposed schematic diagram for CO2 reduction mechanism.

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