An overview of metal oxide materials as electrocatalysts and supports for polymer electrolyte fuel cells
An overview of metal oxide materials as electrocatalysts and supports for polymer electrolyte fuel cells
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DOI：
10.1039/c3ee43886d
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发表时间：
2014-07
影响因子：
32.5
通讯作者：
Zhonghua Zhang;Jie Liu;J. Gu;Liang Su;Lifeng Cheng
中科院分区：
文献类型：
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作者：
Zhonghua Zhang;Jie Liu;J. Gu;Liang Su;Lifeng Cheng
聚合物电解质燃料电池（PEFC）由于其高能量密度、低工作温度和易于运输和储存而在便携式和运输应用中是有前途的电源。然而，电催化剂的高成本、低活性和短寿命限制了PEFC的商业化。金属氧化物具有来源丰富、成本低廉、化学和电化学稳定性高、表面羟基丰富、与金属纳米颗粒相互作用强等优点，有望解决PEFC存在的问题。本文根据金属氧化物的选择标准，选择了氧化钛、氧化钨、氧化钼、氧化钌、氧化锡、氧化铈和氧化锰等二元金属氧化物和多组分钙钛矿型氧化物，并介绍了它们作为PEFC中各种阳极氧化和阴极还原反应的独立电催化剂、助催化剂和载体。综述了金属氧化物的组成、形貌、掺杂和混合对PEFC电催化性能的影响。最后，介绍了几种最有发展前途的金属氧化物材料，并展望了金属氧化物材料在PEFC中的应用前景。
Polymer electrolyte fuel cells (PEFCs) are promising power sources in portable and transportation applications because of their high energy densities, low operating temperatures and ease of transportation and storage. However, high cost, low activity and short durability of electrocatalysts are restricting the commercialization of PEFCs. Metal oxides have abundant sources, low cost, high chemical and electrochemical stability, abundant hydroxyl groups on their surfaces, and strong interactions with metal nanoparticles, and thus are promising to reduce the current problems of PEFCs. In this review, binary metal oxides such as titanium oxide, tungsten oxide, molybdenum oxide, ruthenium oxide, tin oxide, cerium oxide and manganese oxide, and multi-component perovskite oxides are chosen based on the selection criteria of metal oxides and introduced as independent electrocatalysts, co-catalysts and supports for various anode oxidation and cathode reduction reactions in PEFCs. The effects of composition, morphology, doping and mixing of metal oxides on their electrocatalytic performance in PEFCs have also been summarized. Finally, several of the most promising metal oxides and possible research trends of metal oxides are recommended for future PEFCs.