首页|Kinetic-boosted CO2 electroreduction to formate via synergistic electric-thermal field on hierarchical bismuth with amorphous layer
Kinetic-boosted CO2 electroreduction to formate via synergistic electric-thermal field on hierarchical bismuth with amorphous layer
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Electrocatalytic converting CO2 into chemical products has emerged as a promising approach to achieving carbon neutrality.Herein,we report a bismuth-based catalyst with high curvature terminal and amor-phous layer which fabricated via two-step electrodeposition achieves stable formate output in a wide voltage window of 600 mV.The Faraday efficiency(FE)of formate reached up to 99.4％at-0.8 V vs.RHE and it remained constant for more than 92 h at-15 mA cm-2.More intriguingly,FE formate of 95.4％can be realized at a current density of industrial grade(-667.7 mA cm-2)in flow cell.The special structure promoted CO2 adsorption and reduced its activation energy and enhanced the electric-thermal field and K+enrichment which accelerated the reaction kinetics.In situ spectroscopy and theoretical cal-culation further confirmed that the introduction of amorphous structure is beneficial to adsorpting CO2 and stabling*OCHO intermediate.This work provides special insights to fabricate efficient electrocata-lysts by means of structural and crystal engineering and makes efforts to realize the industrialization of bismuth-based catalysts.
CO2 electroreductionHierarchical bismuthAmorphous layerElectric-thermal fieldKinetic-boosting
College of Material,Chemistry and Chemical Engineering,Key Laboratory of Organosilicon Chemistry and Material Technology,Ministry of Education,Hangzhou Normal University,Hangzhou 311121,Zhejiang,China
State Key Laboratory of Metastable Materials Science and Technology,College of Materials Science and Engineering,Yanshan University,Qinhuangdao 066004,Hebei,China
浙江省自然科学基金国家自然科学基金Scientific Research Startup of Hangzhou Normal University河北省自然科学基金Hebei Provincial Foundation for Returness
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