نتایج جستجو برای: bimetallic electrocatalyst for oxygen reduction

تعداد نتایج: 10560376  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2014
Javier Parrondo Taehee Han Ellazar Niangar Chunmei Wang Nilesh Dale Kev Adjemian Vijay Ramani

We report a unique and highly stable electrocatalyst-platinum (Pt) supported on titanium-ruthenium oxide (TRO)-for hydrogen fuel cell vehicles. The Pt/TRO electrocatalyst was exposed to stringent accelerated test protocols designed to induce degradation and failure mechanisms identical to those seen during extended normal operation of a fuel cell automobile-namely, support corrosion during vehi...

Journal: :international journal of nano dimension 0
razieh habibpour department of chemical technologies, iranian research organization for science and technology, p.o. box 3353-5111, tehran, i. r. iran. raheleh vaziri department of chemistry, payame noor university, p.o. box 19395-3697, tehran , i. r. iran.سازمان اصلی تایید شده: دانشگاه پیام نور تهران (payame noor university)

in this study, the structures, the ir spectroscopy, and the electronic properties of auncum (n+m≤5) bimetallic clusters were studied and compared with those of pure gold and copper clusters using the generalized gradient approximation (gga) and exchange correlation density functional theory (dft). the study of an o2-auncum system is important to identify the promotion effects of each of the two...

2013
Xiang Li Li An Xin Chen Nanlin Zhang Dingguo Xia Weifeng Huang Wangsheng Chu Ziyu Wu

Insufficient durability and catalytic activity of oxygen reduction reaction (ORR) electrocatalyst are key issues that have to be solved for the practical application of low temperature fuel cell. This paper introduces a new catalyst design strategy using N-anchor to promote the corrosion resistance of electrocatalyst. The as-synthesized N-Pt3Fe1/C shows a high electrocatalytic activity and a su...

2013
Hoon T. Chung Jong H. Won Piotr Zelenay

Nanostructured carbon-based materials, such as nitrogen-doped carbon nanotube arrays, Co3O4/nitrogen-doped graphene hybrids and carbon nanotube-graphene complexes have shown respectable oxygen reduction reaction activity in alkaline media. Although certainly promising, the performance of these materials does not yet warrant implementation in the energy conversion/storage devices utilizing basic...

Journal: :Materials research express 2022

Abstract In this study, a facile method was used to synthesize B, N-co-doped graphene nanoribbons (BN-GNRs), with g-C 3 N 4 as source of and boric acid for use an effective electrocatalyst the oxygen reduction reaction (ORR). Numerous wavy edges are exposed in GNRs, these provide doping positions B atoms. Compared single or N, co-doping opposite electronegativity can increase amounts. Thus, obt...

In this study, the structures, the IR spectroscopy, and the electronic properties of AunCum (n+m≤5) bimetallic clusters were studied and compared with those of pure gold and copper clusters using the generalized gradient approximation (GGA) and exchange correlation density functional theory (DFT). The study of an O2-AunCum system is important to identify the promotion effects of each of the two...

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