Electrochemical Reduction of Carbon Dioxide on Cu/CuO Core/Shell Catalysts. Issue 9 (8th August 2014)

• Record Type: Journal Article
• Authors: Lan, Yangchun; Gai, Chao; Kenis, Paul J. A.; Lu, Jiaxing
• Is Part Of: ChemElectroChem. Volume 1:Issue 9(2014)
• Page Start: 1577
• Page End: 1582
• Publication Date: 2014-08-08
• Subjects: Electrochemistry -- Periodicals; 541.37
• DOI: 10.1002/celc.201402182
• Languages: English
• ISSNs: 2196-0216

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>We investigate the electrochemical behavior of different loadings of a Cu(core)/CuO(shell) catalyst in a standard three‐electrode cell, which reveals transformations between Cu, Cu^I, and CuO species. The electroreduction of CO₂ on the catalyst is performed in an aqueous solution within a flow reactor. CO and HCOOH are the main products, with H₂ as a byproduct. When the catalyst loading is 1.0 mg cm⁻², the faradaic efficiencies of CO and HCOOH are higher than those with other catalyst loadings, with a short reaction time. This paper also focuses on the experimental and kinetic details of the electroreduction process of CO₂ to CO and HCOOH when using the Cu/CuO catalyst. Reactions are modeled by using an in‐series, first‐order reaction, and the models are verified to reasonably describe the two products formed during the electroreduction of CO₂. According to the kinetic analysis, the rate constant for HCOOH production is higher than that of CO.</p> </abstract>