Electrolytic reduction of CO2 in KHCO3 and alkanolamine solutions with layered double hydroxides intercalated with gold or copper

Simple and efficient: performance of palladium-loaded sepiolite for electrocatalytic ethanol oxidation

“…The cyclic voltammetry (CV) curves of the as-prepared catalysts at various scan rates in 0.1 mol L –1 KCl + 1.0 mmol L –1 K 3 Fe(CN) 6 solution are shown in supplementary Figs S2–S6. The electrochemical surface area (ECSA) was calculated from the slope of the plots between the peak current densities and the square root of the scan rates according to the Randles–Sevick method (Equation 1; Li et al , 2022b), as is illustrated in Table 2:where i p , n , F, A , C , v , D , R and T represent the current at the peak potential, the number of electrons transferred, the Faraday constant, the electrochemically active area, the concentration, the scan rate, the diffusion coefficient, the universal gas constant and the temperature, respectively (Li et al , 2022a). For determination of the ECSA, the scanning was repeated >100 times in 0.1 mol L –1 KCl + 1.0 mmol L –1 K 3 Fe(CN) 6 solution until the voltammogram was stable and the target oxidation peak (Fe(II) → Fe(III)) at 0.2–0.4 V could be seen clearly (Fig.…”

“…The electrochemical surface area (ECSA) was calculated from the slope of the plots between the peak current densities and the square root of scan rates according to the Randles-Sevick method [Eq (1)] (Li et al, 2022b) as illustrated in Table 2. For the determination of ECSA, the scanning was repeated for more than 100 times in 0.1 mol L −1 KCl + 1.0 mmol/L K 3 Fe(CN) 6 solution until the voltammogram was stable and the target oxidation peak [Fe(II)→Fe(III)] @ 0.2~0.4 V could be clearly seen as shown in Fig.…”

“…The cyclic voltammetry (CV) curves of the as-prepared catalysts at various scan rates in 0.1 mol L -1 KCl + 1.0 mmol L -1 K 3 Fe (CN) 6 solution are shown in supplementary Figs S2-S6. The electrochemical surface area (ECSA) was calculated from the slope of the plots between the peak current densities and the square root of the scan rates according to the Randles-Sevick method (Equation 1; Li et al, 2022b), as is illustrated in Table 2:…”

Energy comparison of sequential and integrated CO2 capture and electrochemical conversion

“…Despite a number of reports on integrated electrolysis, their current performance is inferior to the gasfed electrolysis system owing in part to their earlier development 23,[43][44][45][46][47] (see Fig. 2) Regardless as the process can be evaluated as a function of performance metrics it is possible to forecast required performance targets at this early stage.…”

Energy comparison of sequential and integrated CO2 capture and electrochemical conversion

“…Despite a number of reports on integrated electrolysis, their current performance is inferior to the gas-fed electrolysis system owing in part to their earlier development 22,[43][44][45][46][47] (see Fig. 2) Regardless as the process can be evaluated as a function of performance metrics it is possible to forecast required performance targets at this early stage.…”