Role of Metal Coordination Structures in Enhancement of Electrocatalytic Activity of Ternary Nanoalloys for Oxygen Reduction Reaction

作者: Bridgid N. Wanjala , Bin Fang , Rameshwori Loukrakpam , Yongsheng Chen , Mark Engelhard

DOI: 10.1021/CS300080K

关键词:

摘要: The ability to harness the metal coordination structures of nanoalloy catalysts is critical for catalyzing oxygen reduction reaction because such a detailed atomic-scale structure dictates surface binding site and strength molecular oxygenated intermediate species in electrocatalytic process. This Article describes results an investigation ternary (PtNiCo) nanoalloys their manipulation enhance activity reaction. basic hypothesis that can be manipulated by oxidative–reductive thermal treatment influence on surface. have revealed remarkable increases both mass specific processed over those treated under nonreactive or low-degree oxidative atmospheres before reductive tr...

参考文章(41)
Hubert A. Gasteiger, Nenad M Marković, Just a dream - or future reality? Science. ,vol. 324, pp. 48- 49 ,(2009) , 10.1126/SCIENCE.1172083
Min Ku Jeon, Paul J McGinn, None, Composition dependence of ternary Pt–Ni–Cr catalyst activity for the methanol electro-oxidation reaction Journal of Power Sources. ,vol. 194, pp. 737- 745 ,(2009) , 10.1016/J.JPOWSOUR.2009.06.019
Sanjeev Mukerjee, Supramaniam Srinivasan, Manuel P. Soriaga, James McBreen, Effect of Preparation Conditions of Pt Alloys on Their Electronic, Structural, and Electrocatalytic Activities for Oxygen Reduction-XRD, XAS, and Electrochemical Studies The Journal of Physical Chemistry. ,vol. 99, pp. 4577- 4589 ,(1995) , 10.1021/J100013A032
Ben Fowler, Christopher A Lucas, Ahmed Omer, Guofeng Wang, Vojislav R Stamenković, Nenad M Marković, None, Segregation and stability at Pt3Ni(111) surfaces and Pt75Ni25 nanoparticles Electrochimica Acta. ,vol. 53, pp. 6076- 6080 ,(2008) , 10.1016/J.ELECTACTA.2007.11.063
Jin Luo, Li Han, Nancy N. Kariuki, Lingyan Wang, Derrick Mott, Chuan-Jian Zhong, T. He, Synthesis and Characterization of Monolayer-Capped PtVFe Nanoparticles with Controllable Sizes and Composition Chemistry of Materials. ,vol. 17, pp. 5282- 5290 ,(2005) , 10.1021/CM0508219
Ye Xu, Andrei V. Ruban, Manos Mavrikakis, Adsorption and dissociation of O2 on Pt-Co and Pt-Fe alloys. Journal of the American Chemical Society. ,vol. 126, pp. 4717- 4725 ,(2004) , 10.1021/JA031701+
Bin Fang, Jin Luo, Peter N. Njoki, Rameshwori Loukrakpam, Derrick Mott, Bridgid Wanjala, Xiang Hu, Chuan-Jian Zhong, Nanostructured PtVFe catalysts: Electrocatalytic performance in proton exchange membrane fuel cells Electrochemistry Communications. ,vol. 11, pp. 1139- 1141 ,(2009) , 10.1016/J.ELECOM.2009.03.032
Derrick Mott, Jin Luo, Peter N. Njoki, Yan Lin, Lingyan Wang, Chuan-Jian Zhong, Synergistic activity of gold-platinum alloy nanoparticle catalysts Catalysis Today. ,vol. 122, pp. 378- 385 ,(2007) , 10.1016/J.CATTOD.2007.01.007
Rameshwori Loukrakpam, Jin Luo, Ting He, Yongsheng Chen, Zhichuan Xu, Peter N. Njoki, Bridgid N. Wanjala, Bin Fang, Derrick Mott, Jun Yin, Jonathan Klar, Brian Powell, Chuan-Jian Zhong, Nanoengineered PtCo and PtNi Catalysts for Oxygen Reduction Reaction: An Assessment of the Structural and Electrocatalytic Properties Journal of Physical Chemistry C. ,vol. 115, pp. 1682- 1694 ,(2011) , 10.1021/JP109630N