Electro-catalytic performance of Pd decorated Cu nanowires catalyst for the methanol oxidation. (19th February 2015)

• Record Type: Journal Article
• Authors: Ren, Yanbiao; Zhang, Shichao; Lin, Ruoxu; Wei, Xin
• Is Part Of: International journal of hydrogen energy. Volume 40:Number 6(2015)
• Page Start: 2621
• Page End: 2630
• Publication Date: 2015-02-19
• Subjects: Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2014.12.005
• Languages: English
• ISSNs: 0360-3199

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title id="sectitle0010">Abstract</title> <sec> <p id="abspara0010">Binary shell–core structured electro-catalysts have attracted great attention owing to their superior catalytic performance and low material costs with respect to those monometallic catalysts. A novel Pd decorated copper nanowires (Pd@CNWs) electro-catalyst has been fabricated through the facile hydrometallurgy approach. Pd shells with a thickness of 30–50 nm are uniformly deposited onto the as-prepared CNWs surface, in which ultra-long CNWs (with an average diameter and length of 100 ± 20 nm and 35 ± 5 μm) are used as the one dimensional skeleton as well as reduction agent. Pd@CNWs catalyst exhibits higher catalytic activity and better durability for the methanol electro-oxidation (MEO) in comparison with Pd–Cu. The Tafel analysis reveals that the first charge transfer is the rate-determining step of MEO on Pd@CNWs electrode. The overall MEO reaction orders on Pd@CNWs electrode for CH₃OH (ca. 0.23) and OH⁻ (ca. 0.22) reveal that the MEO mechanism maintains unchanged with increasing the CH₃OH or OH⁻ concentration at all of the Tafel ranges.</p> </sec> </abstract>