Enhanced Electrocatalytic Performance of Pt3Pd1 Alloys Supported on CeO2/C for Methanol Oxidation and Oxygen Reduction Reactions

被引:38
作者
Bin Yousaf, Ammar [1 ,2 ]
Imran, M. [1 ]
Uwitonze, Nestor [1 ]
Zeb, Akif [1 ]
Zaidi, Syed Jayaid [3 ]
Ansari, Tariq Mahmood [4 ]
Yasmeen, Ghazala [4 ]
Manzoor, Suryyia [4 ]
机构
[1] Univ Sci & Technol China, Div Nanomat & Chem, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
[2] Islamia Univ Bahawalpur, Dept Chem, Bahawalpur 63100, Pakistan
[3] Qatar Univ, Ctr Adv Mat, Doha 2713, Qatar
[4] Bahauddin Zakaria Univ, Inst Chem Sci, Multan 60800, Pakistan
基金
中国国家自然科学基金;
关键词
PT-BIMETALLIC ALLOY; FUEL-CELLS; ALKALINE-SOLUTIONS; FACILE SYNTHESIS; LITHIUM STORAGE; SHAPE-CONTROL; CO OXIDATION; PLATINUM; GRAPHENE; NANOPARTICLES;
D O I
10.1021/acs.jpcc.6b11528
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Direct methanol fuel cell (DMFC) with noble metals based anode and cathode is a promising energy generator to portable power devices. However, the deterioration of catalyst performance suffered by CO poisoning, crossover of fuel from anode to cathode, and higher economical cost of such devices hinder their commercialization. Herein, all of the above issues have been neutralized and crossed the huge hump of faced challenges. Highly efficient, durable, and surfactant-free catalyst with ultralow Pt3Pd1 loadings supported on CeO2/C was synthesized. The ex-situ and in situ spectroelectrochemical techniques such as, CV, in situ FTIR, and online DEMS studies confirm the highly efficient activity of catalyst toward electro-oxidation of methanol. In addition, the critical and detailed analysis of RDE results prove the superiority of the present material for electro-reduction of oxygen along a cathode side. The as-synthesized catalyst has proven itself as a better substitute for commercial Pt/C catalyst, with enhanced and durable performance as anode and cathode material for DMFCs. The obtained remarkable performance of catalysts can be attributed to the accumulative effects of PtPd bimetallic NPs and the enhanced synergistic factors of CeO2 in a hybrid material.
引用
收藏
页码:2069 / 2079
页数:11
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