典型文献
High-loading Pt-alloy catalysts for boosted oxygen reduction reaction performance
文献摘要：
To improve performance of membrane electrode assembly(MEA)at large current density region,efficient mass transfer at the cathode is desired,for which a feasible strategy is to lower catalyst layer thickness by constructing high loading Pt-alloy catalysts on carbon.But the high loading may induce unwanted par-ticle aggregation.In this work,H-PtNi/C with 33％(mass)Pt loading on carbon and monodisperse distri-bution of 3.55 nm PtNi nanoparticles,was prepared by a bimodal-pore route.In electrocatalytic oxygen reduction reaction(ORR),H-PtNi/C displays an activity inferior to the low Pt loading catalyst L-PtNi/C(13.3％(mass))in the half-cell.While in H2-O2 MEA,H-PtNi/C delivers the peak power density of 1.51 W·cm-2 and the mass transfer limiting current density of 4.4 A·cm-2,being 21％and 16％higher than those of L-PtNi/C(1.25 W cm-2,3.8 A·cm-2)respectively,which can be ascribed to enhanced mass trans-fer brought by the thinner catalyst layer in the former.In addition,the same method can be used to pre-pare PtFe alloy catalyst with a high-Pt loading of 36％(mass).This work may lead to a range of catalyst materials for the large current density applications,such as fuel cell vehicles.
文献关键词：
中图分类号：
作者姓名：
Wei Hong;Xinran Shen;Jian Wang;Xin Feng;Wenjing Zhang;Jing Li;Zidong Wei
作者机构：
School of Chemistry and Chemical Engineering,Chongqing University,Chongqing 400044,China;School of Materials Science and Engineering,Chongqing University,Chongqing 400044,China
文献出处：
引用格式：
[1]Wei Hong;Xinran Shen;Jian Wang;Xin Feng;Wenjing Zhang;Jing Li;Zidong Wei-.High-loading Pt-alloy catalysts for boosted oxygen reduction reaction performance)[J].中国化学工程学报（英文版）,2022(08):30-35
A类：
PtFe
B类：
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AB值：
0.498148
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