催化作用
阳极
阴极
双金属片
材料科学
化学工程
甲醇
直接甲醇燃料电池
电催化剂
甲醇燃料
化学
电化学
电极
有机化学
工程类
物理化学
作者
Ammar Bin Yousaf,Muhammad Imran,Nestor Uwitonze,Akif Zeb,Syed Javaid Zaidi,Tariq Mahmood Ansari,Ghazala Yasmeen,Suryyia Manzoor
标识
DOI:10.1021/acs.jpcc.6b11528
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.
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