Pt overgrowth on carbon supported PdFe seeds in the preparation of core-shell electrocatalysts for the oxygen reduction reaction
Pt overgrowth on carbon supported PdFe seeds in the preparation of core-shell electrocatalysts for the oxygen reduction reaction
复制标题
碳负载 PdFe 晶种上 Pt 的过度生长用于制备氧还原反应的核壳电催化剂
DOI:
10.1016/j.jpowsour.2009.12.015
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发表时间:
2010-06
影响因子:
9.2
通讯作者:
雷自强
中科院分区:
文献类型:
--
作者:
雷自强
In this study, a novel core–shell structured Pd3Fe@Pt/C electrocatalyst, which is based on Pt deposited onto carbon supported Pd3Fe nanoparticles, is prepared for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). The carbon supported Pd3Fe nanoparticles act as seeds to guide the growth of Pt. The formation of the core–shell structured Pd3Fe@Pt/C is confirmed by transmission electron microscopy (TEM), X-ray diffraction (XRD) and electrochemical characterization. The higher surface area of the synthesized catalyst suggests that the utilization of Pt in the Pd3Fe@Pt/C catalyst is higher than that in Pt/C. Furthermore, better electrocatalytic performance than that of Pt/C and Pd3Fe/C catalyst is observed in the ORR which follows a four-electron path. Consequently, the results indicate that the Pd3Fe@Pt/C catalyst could be used as a more economically viable alternative for the ORR of PEMFCs.
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影响因子:
5.4
作者:
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通讯作者:
K. Shimizu;I. Cheng;C. Wai
影响因子:
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作者:
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通讯作者:
Zhong, CJ
影响因子:
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R. Castellanos;A. L. Ocampo;J. Moreira-Acosta;P. Sebastian
影响因子:
29.4
作者:
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通讯作者:
Zhong, Chuan-Jian
影响因子:
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作者:
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通讯作者:
G. Ramos-Sánchez;H. Yee-Madeira;O. Solorza-Feria