Mesostructured platinum-free anode and carbon-free cathode catalysts for durable proton exchange membrane fuel cells.
As one of the most important clean energy sources, proton exchange membrane fuel cells (PEMFCs) have been a topic of extensive research focus for decades. Unfortunately, several critical technique obstacles, such as the high cost of platinum electrode catalysts, performance degradation due to the CO poisoning of the platinum anode, and carbon corrosion by oxygen in the cathode, have greatly impeded its commercial development. A prototype of a single PEMFC catalyzed by a mesostructured platinum-free WO3/C anode and a mesostructured carbon-free Pt/WC cathode catalysts is reported herein. The prototype cell exhibited 93% power output of a standard PEMFC using commercial Pt/C catalysts at 50 and 70 °C, and more importantly, CO poisoning-free and carbon corrosion-resistant characters of the anode and cathode, respectively. Consequently, the prototype cell demonstrated considerably enhanced cell operation durability. The mesostructured electrode catalysts are therefore highly promising in the future development and application of PEMFCs.
['Cui|Xiangzhi|X|', 'Shi|Jianlin|J|', 'Wang|Yongxia|Y|', 'Chen|Yu|Y|', 'Zhang|Lingxia|L|', 'Hua|Zile|Z|']
D002244:Carbon D002384:Catalysis D011211:Electric Power Supplies D004566:Electrodes D007474:Ion Exchange D008567:Membranes, Artificial D010087:Oxides D010984:Platinum D011522:Protons D014414:Tungsten
electrochemistry heterogeneous catalysis mesoporous materials supported catalysts tungsten