Electrodeposited Sn–Cu@Sn dendrites for selective electrochemical CO₂ reduction to formic acid

Abstract

Large scale CO2 electrolysis can be applied to store renewable energy into chemicals. Recent developments in gas diffusion electrodes now enable commercially relevant current density, however, low selectivity of CO2...

Developing Catalysts Integrated in Gas-Diffusion Electrodes for CO2 Electrolyzers

“…By using a plating solution with both Sn and Cu precursors for electrodeposition, Sn−Cu@Sn dendrites were prepared as shown in Figure 4c. 51 The formate FE was in this manner enhanced further to 84.2%. Bimetallic catalysts can effectively change the interaction with the reaction intermediates and alter the reaction pathways to obtain high selectivity.…”

“…It operated stably for 72 h (Figure b). By using a plating solution with both Sn and Cu precursors for electrodeposition, Sn–Cu@Sn dendrites were prepared as shown in Figure c . The formate FE was in this manner enhanced further to 84.2%.…”

“…(c) SEM and EDS mapping image of Sn–Cu@Sn dendrites. Reproduced with permission from ref . Copyright 2022 Royal Society of Chemistry.…”

Recent progress of heterogeneous catalysts for transfer hydrogenation under the background of carbon neutrality

“…In particular, in the context of carbon neutrality, the highly efficient conversion of CO 2 to formic acid and methanol is regarded as one of the most promising CO 2 direct conversion technologies for industrialization, which is undergoing rapid development. 5,8–14 For example, Yang et al recently synthesized a layered {001}-oriented Bi oxyhalide ( i.e. BiOX, X = Cl, Br or I) electrocatalyst to produce formic acid from CO 2 in a flow cell.…”

Porous Zn Conformal Coating on Dendritic‐Like Ag with Enhanced Selectivity and Stability for CO2 Electroreduction to CO

“…[32] These factors eventually cause the dissolution/redeposition and deformation of the Ag nanoneedle catalysts during CO 2 RR. Various strategies have been reported to solve the disfigurement and sintering of catalysts, such as alloy, [34,35] de-alloy, [36] overlayers, [37,38] etc. However, it is challenging to keep the structural properties while maintain the high performance of CO 2 RR.…”