Novel palladium-lead (Pd-Pb/C) bimetallic catalysts for electrooxidation of ethanol in alkaline media

作者：Wang Yi; Nguyen Truong Son; Liu Xuewei; Wang Xin^*

来源：Journal of Power Sources, 2010, 195(9): 2619-2622.

DOI：10.1016/j.jpowsour.2009.11.072

• Palladium-lead catalyst
• Palladium catalyst
• Ethanol oxidation
• Alkaline fuel cell

Carbon-supported bimetallic palladium-lead (Pd-Pb/C) catalysts with different amounts of lead are prepared using a co-reduction method. The catalysts are characterized by various techniques, which reveal the formation of an alloy nanoparticle structure. The electrochemical activities of the catalysts towards ethanol oxidation in alkaline media are examined by cyclic voltammetry, linear sweep voltammetry and chronoamperometry methods. The results show that the Pd-Pb(4:1)/C catalyst exhibits a better catalytic activity than the Pd/C catalyst. From carbon monoxide (CO) stripping results, the addition of lead also facilitates the oxidative removal of adsorbed CO. The promoting effect of lead is explained by a bi-functional mechanism and cl-band theory.

• 出版日期2010-5-1
• 单位南阳理工学院