Citation: ZHAI Xiao, DING Yi. Nanoporous Metal Electrocatalysts for Oxygen Reduction Reactions[J]. Acta Physico-Chimica Sinica, ;2017, 33(7): 1366-1378. doi: 10.3866/PKU.WHXB201704173
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Fuel cells allow the direct conversion of the chemical energy in chemical fuels to electricity, with particular advantages of being highly effective, environment-friendly, and portable. For those fuel cells using oxygen or air as the oxidant, the oxygen reduction reaction (ORR) occurring on the cathode remains the major obstacle for the commercialization of fuel cell technologies because of its slow kinetics, which in turn results in relatively low catalytic efficiency and high price due to excessive use of precious metals like Pt. In recent years, dealloyed nanoporous metals have garnered widespread attention in the field of electrocatalysis due to their unique structural properties, such as three-dimensionally interconnected pore/ligament structure, excellent conductivity, and structural flexibility. This review summarizes the recent advances in nanoporous metal catalysts for ORR, with an emphasis on their unique structural properties for the development of new-generation high-performance fuel cell catalysts.
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