| CO2 electrocatalysis offers a potential path towards carbon-neutral fuels and chemicals. In order for CO2 electroreduction to be an economic driver in reducing global emissions, it is essential to identify efficient catalysts. Due to the large number of possible material combinations and operating conditions, a high-throughput approach is warranted. Here, a device for parallel-testing of CO2 electroreduction catalysts is designed and constructed. Current limitations of the traditional H-cell are overcome by combining a patterned gold-coated-glass 'chip' as the catalyst substrate with a biology-style well-plate, which provides unique control of catalysts. For the first time, this design incorporates independent testing of gaseous products; necessary for determining CO 2- electroreduction-catalyst performance. Finally, limited parallel operation of the platform was successfully demonstrated using a copper nanoparticle electrocatalyst. These results show the potential for parallel testing in this area, as well as the significant remaining challenges in high-throughput gas handling and analysis, inherent to this application. |
