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Highly Efficient Electroreduction of CO 2 to Methanol on Palladium–Copper Bimetallic Aerogels
Author(s) -
Lu Lu,
Sun Xiaofu,
Ma Jun,
Yang Dexin,
Wu Haihong,
Zhang Bingxing,
Zhang Jianling,
Han Buxing
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201808964
Subject(s) - bimetallic strip , aerogel , electrocatalyst , overpotential , palladium , copper , faraday efficiency , catalysis , electrochemistry , inorganic chemistry , methanol , materials science , chemistry , chemical engineering , metallurgy , electrode , nanotechnology , organic chemistry , engineering
Electrochemical reduction of CO 2 to CH 3 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 CO 2 into CH 3 OH. The current density and Faradaic efficiency of CH 3 OH can be as high as 31.8 mA cm −2 and 80.0 % over the Pd 83 Cu 17 aerogel at a very low overpotential (0.24 V). The superior performance of the electrocatalyst results from efficient adsorption and stabilization of the CO 2 radical anion, high Pd 0 /Pd II and Cu I +Cu 0 /Cu II ratios, and sufficient Pd/Cu grain boundaries of aerogel nanochains.