Fig. 3
From: CO2 electrochemical catalytic reduction with a highly active cobalt phthalocyanine

Controlled potential electrolysis of CO2 reduction. a Electrolysis current densities (E = −0.676 V vs. RHE) for a CoPc2@MWCNTs film at various catalyst mass ratio. b Long-term electrolysis (E = −0.676 V vs. RHE) at optimized mass ratio. c Variation of the current as a function of the electrolysis potential at optimized mass ratio (see text). d Current density and rate constant (TOF) for CoPc1@MWCNTs and CoPc2@MWCNTs for CO production in a CO2 saturated solution containing 0.5 M NaHCO3 (pH 7.3). The uncertainties represent standard errors obtained from four measurements