Pt-Pd Bimetal Popcorn Nanocrystals: Enhancing the Catalytic Performance by Combination Effect of Stable Multipetals Nanostructure and Highly Accessible Active Sites

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Yanxia MaTao Yang

Abstract

Exploration of highly efficient electrocatalysts is significantly urgent for the extensive adoption of the fuel cells. Because of their high activity and super stability, Pt-Pd bimetal nanocrystals have been widely recognized as one class of promising electrocatalysts for oxygen reduction. This article presents the synthesis of popcorn-shaped Pt-Pd bimetal nanoparticles with a wide composition range through a facile hydrothermal strategy. The hollow-centered nanoparticles are surrounded by several petals and concave surfaces. By exploring the oxygen reduction reaction on the carbon supported Pt-Pd popcorns in perchloric acid solution, it is found that compared with the commercial Pt/C catalyst the present catalysts display superior catalytic performances in aspects of catalytic activity and stability. More importantly, the Pt-Pd popcorns display minor performance degradations through prolonged potential cycling. The enhanced performances can be mainly attributed to the unique popcorn structure of the Pt-Pd components, which allows the appearance and long existence of the high active sites with more accessibility. The present work highlights the key roles of accessible high active sites in the oxygen reduction reaction, which wi...Continue Reading

References

Sep 8, 2005·Journal of the American Chemical Society·Junliang ZhangRadoslav R Adzic
Dec 27, 2005·The Journal of Physical Chemistry. B·Vladimir KomanickyHoydoo You
Nov 11, 2009·Journal of the American Chemical Society·Jia X WangRadoslav R Adzic
Nov 23, 2010·Angewandte Chemie·Byungkwon Lim, Younan Xia
Mar 17, 2011·Journal of the American Chemical Society·Xiaoqing HuangNanfeng Zheng
May 31, 2011·Journal of the American Chemical Society·Liang WangYusuke Yamauchi
Oct 11, 2012·Nature Communications·Kotaro SasakiRadoslav R Adzic
Oct 31, 2012·ACS Applied Materials & Interfaces·Sang-Il ChoiJoon T Park
Mar 7, 2013·Accounts of Chemical Research·Nathan S PorterJiye Fang
Feb 6, 2015·Chemical Society Reviews·Yao NieZidong Wei
Feb 18, 2016·Chemical Reviews·Minhua ShaoRegis Chenitz
Apr 2, 2016·Science·María Escudero-EscribanoIb Chorkendorff
Aug 30, 2016·ACS Applied Materials & Interfaces·Tao YangZhiwei Tong

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