Pt-on-Pd Dendritic Nanosheets with Enhanced Bifunctional Fuel Cell Catalytic Performance

ACS Applied Materials & Interfaces
Xiuying PengShaojun Guo

Abstract

Pd-Pt bimetallic nanocrystals have become appealing in the electrocatalytic field by virtue of their synergy effects derived from the electronic coupling between two metals. Herein, a facile seed-mediated growth approach is reported for synthesis of Pt-on-Pd dendritic nanosheets (DNSs) through the growth of Pt branches on ultrathin Pd nanosheets (NSs). The as-obtained Pt-on-Pd DNSs exhibit superior catalytic activity toward both oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR), with mass activities (MAs) 2.2 times higher for ORR and 3.4 times higher for MOR than commercial Pt/C catalysts. Moreover, these spatially separated Pt branches supported on 2D NSs also endow the Pt-on-Pd DNSs with impressive durability for ORR with only 18.9% loss in MA, whereas the Pt/C catalyst loses 50.0% after 10,000-cycle accelerated durability tests. This 2D DNS architecture can be extended to other 2D metallic NS substrates for constructing Pt-based electrocatalysts with excellent electrocatalytic performance.

References

Apr 14, 2005·Chemical Reviews·Clemens BurdaMostafa A El-Sayed
Jan 16, 2007·Science·Vojislav R StamenkovicNenad M Marković
Feb 21, 2007·Nature Materials·Vojislav R StamenkovicNenad M Markovic
May 10, 2008·Journal of the American Chemical Society·Feng-Ru FanZhong-Qun Tian
May 15, 2009·Journal of the American Chemical Society·Zhenmeng Peng, Hong Yang
Feb 18, 2011·Physical Chemistry Chemical Physics : PCCP·Young-Woo LeeKyung-Won Park
Feb 23, 2011·Angewandte Chemie·Hong Yang
Mar 23, 2011·Journal of the American Chemical Society·Ifan E L StephensIb Chorkendorff
May 31, 2011·Journal of the American Chemical Society·Liang WangYusuke Yamauchi
Aug 28, 2012·Chemical Reviews·Weiting YuJingguang G Chen
Apr 10, 2013·Proceedings of the National Academy of Sciences of the United States of America·Xiaohu XiaYounan Xia
Aug 9, 2013·Physical Chemistry Chemical Physics : PCCP·Minhua ShaoRobert M Darling
Nov 29, 2013·Journal of the American Chemical Society·Michelle L Personick, Chad A Mirkin
Mar 22, 2014·Journal of the American Chemical Society·Xiaolian SunShouheng Sun
May 29, 2015·Journal of the American Chemical Society·Younan XiaHsin-Chieh Peng
Dec 24, 2015·Nanoscale·Zhaohui WuWei Wu
Jul 2, 2016·Chemical Reviews·Kyle D GilroyYounan Xia
Nov 28, 2017·Chemical Communications : Chem Comm·Fei LinShaojun Guo

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