Composition-Controllable AuPt Alloy Catalysts for Electrooxidation of Formic Acid

Wen-Jin Shen Wen-Jin Shen , Ji-Long Sang Ji-Long Sang , Ling Cai Ling Cai , Yong-Jun Li Yong-Jun Li
Российский электрохимический журнал
Abstract / Full Text

AuPt alloy catalysts with various compositions have been successfully prepared simply by one-step co-reduction of Au and Pt precursors involving sodium citrate as stabilizer and reductant. XRD, TEM and EDX element mapping analysis confirmed that the resulting AuPt nanoparticles are single-phase alloys rather than random mixtures of tiny Au and Pt particles. Compared with Pt/C, alloying Au with Pt can effectively alter the kinetic process of formic acid oxidation, reducing the generation of CO-like intermediates. Au81Pt19 displays superior electrocatalytic activity and durability, ~11 times in the mass activity better than commercial Pt/C and may be of practical significance for the commercialization of direct formic acid fuel cell.

Author information
  • State Key Lab of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China

    Wen-Jin Shen, Ji-Long Sang, Ling Cai & Yong-Jun Li

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