Journal
ELECTROCHIMICA ACTA
Volume 176, Issue -, Pages 222-229Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.06.135
Keywords
PdCu; Hollow nanospheres; Vesicle template; Electrocatalyst
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Funding
- National Basic Research Program of China (973Program) [2012CB720302]
- National Natural Science Funds of China (NSFC) [21366027]
- Doctor Foundation of Bingtuan [2013BB010]
- Foundation of Young Scientists in Shihezi University [2013ZRKXJQ03]
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Hollow PdCu nanospheres were synthesized via a soft template method using tetrabutylphosphonium bromide (Bu4PBr) as a surfactant in an aqueous medium. The catalytic activity of the hollow PdCu nanospheres can be adjusted by changing the catalyst composition. TEM and HAADF STEM show that the synthesized PdCu nanospheres have hollow spherical structures and that both Pd and Cu are relatively uniformly distributed. Compared to commercial Pd/C or Pt/C catalysts, the synthesized PdCu/C materials exhibit a higher electrocatalytic activity for the oxygen reduction reaction in 0.1 mol L-1 NaOH solution. The results indicate that the hollow PdCu/C structures are promising electrocatalysts for cathodic electrodes used in alkaline conditions. The enhanced properties of the hollow PdCu/C catalyst are mainly due to the synergy of Cu dopants and the hollow porous structure. (C) 2015 Elsevier Ltd. All rights reserved.
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