Biologically Inspired Highly Durable Iron Phthalocyanine Catalysts for Oxygen Reduction Reaction in Polymer Electrolyte Membrane Fuel Cells

被引：255

作者：

Li, Wenmu ^{[1
]}

Yu, Aiping ^{[1
]}

Higgins, Drew C. ^{[1
]}

Llanos, Bernard G. ^{[1
]}

Chen, Zhongwei ^{[1
]}

机构：

[1] Univ Waterloo, Dept Chem Engn, Waterloo Inst Nanotechnol, Waterloo Inst Sustainable Energy, Waterloo, ON N2L 3G1, Canada

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 48期

基金：

加拿大自然科学与工程研究理事会;

关键词：

O-2; REDUCTION; CYANIDE; DERIVATIVES; ACTIVATION; LIGAND;

D O I：

10.1021/ja106217u

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the present work, we have designed and synthesized a new highly durable iron phtalocyanine based nonprecious oxygen reduction reaction (ORR) catalyst (Fe-SPc) for polymer electrolyte membrane fuel cells (PEMFCs). The Fe-SPc, with a novel structure inspired by that of naturally occurring oxygen activation catalysts, is prepared by a nonpyrolyzing method, allowing adequate control of the atomic structure and surface properties of the material. Significantly improved OAR stability of the Fe-SPc is observed compared with the commercial Fe-Pc catalysts. The Fe-SPc has similar activity to that of the commercial Fe-Pc initially, while the Fe-SPc displays 4.6 times higher current density than that of the commercial Fe-Pc after 10 sweep potential cycles, and a current density that is 7.4 times higher after 100 cycles. This has been attributed to the incorporation of electron-donating functional groups, along with a high degree of steric hindrance maintaining active site isolation. Nonprecious Fe-SPc is promising as a potential alternative ORR electrocatalyst for PEMFCs.

引用

页码：17056 / 17058

页数：3

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