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Horne, Mike
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Topics
Publications (9/9 displayed)
- 2021CdS-Enhanced Ethanol Selectivity in Electrocatalytic CO2 Reduction at Sulfide-Derived Cu-Cdcitations
- 2019Electrocatalytic CO2 reduction to formate on Cu based surface alloys with enhanced selectivitycitations
- 2019Electrochemically controlled deposition of ultrathin polymer electrolyte on complex microbattery electrode architecturescitations
- 2018Catalytic Static Mixer Technology for use in Continuous Flow Hydrogenations
- 2018Integrating polymer electrolytes: A step closer to 3D-Microbatteries for MEMS
- 2018Reductive aminations using a 3D printed supported metal(0) catalyst systemcitations
- 2017A step closer to 3D-Microbatteries for sensors: integrating polymer electrolytes
- 2011Aluminium coordination chemistry in ionic liquid/AlCl3 mixtures
- 2004The application of anthraquinone redox catalysts for accelerating the aeration step in the becher processcitations
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article
CdS-Enhanced Ethanol Selectivity in Electrocatalytic CO2 Reduction at Sulfide-Derived Cu-Cd
Abstract
The development of Cu-based catalysts for the electrochemical CO2 reduction reaction (eCO2RR) is of major interest for generating commercially important C2 liquid products such as ethanol. Cu is exclusive among the eCO2RR metallic catalysts in that it facilitates the formation of a range of highly reduced C2 products, with a reasonable total faradaic efficiency but poor product selectivity. Here, a series of new sulfide-derived copper-cadmium catalysts (SD-CuxCdy) was developed. An excellent faradaic efficiency of around 32 % but with a relatively low current density of 0.6 mA cm−2 for ethanol was obtained using the SD-CuCd2 catalyst at the relatively low overpotential of 0.89 V in a CO2-saturated aqueous 0.10 m KHCO3 solution with an H-cell. The current density increased by an order of magnitude under similar conditions using a flow cell where the mass transport rate for CO2 was greatly enhanced. Ex situ spectroscopic and microscopic, and voltammetric investigations pointed to the role of abundant phase boundaries between CdS and Cu+/Cu sites in the SD-CuCd2 catalyst in enhancing the selectivity and efficiency of ethanol formation at low potentials.