气凝胶
双金属片
电催化剂
过电位
钯
法拉第效率
电化学
催化作用
材料科学
铜
甲醇
无机化学
吸附
化学工程
化学
冶金
纳米技术
电极
金属
有机化学
物理化学
工程类
作者
Lu Lu,Xiaofu Sun,Jun Ma,Dexin Yang,Haihong Wu,Bingxing Zhang,Jianling Zhang,Buxing Han
标识
DOI:10.1002/anie.201808964
摘要
Abstract 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.
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