Highly Efficient Electroreduction of CO2 to Methanol on Palladium-Copper Bimetallic Aerogels.
Lu LuXiaofu SunJun MaDexin YangHaihong WuBingxing ZhangJianling ZhangHuizhen LiuPublished in: Angewandte Chemie (International ed. in English) (2018)
Electrochemical reduction of CO2 to CH3 OH is of great interest. Aerogels have fine inorganic superstructure with high porosity and are known to be exceptional materials. Now a Pd-Cu bimetallic aerogel electrocatalyst has been developed for conversion of CO2 into CH3 OH. The current density and Faradaic efficiency of CH3 OH can be as high as 31.8 mA cm-2 and 80.0 % over the Pd83 Cu17 aerogel at a very low overpotential (0.24 V). The superior performance of the electrocatalyst results from efficient adsorption and stabilization of the CO2 radical anion, high Pd0 /PdII and CuI +Cu0 /CuII ratios, and sufficient Pd/Cu grain boundaries of aerogel nanochains.