Direct Formic Acid Microfluidic Fuel Cell with Pd Nanocubes Supported on Flow-Through Microporous Electrodes

作者：Arjona N^*; Goulet M A; Guerra Balcazar M; Ledesma Garcia J; Kjeang E; Arriaga L G

来源：ECS Electrochemistry Letters, 2015, 4(4): F24-F28.

DOI：10.1149/2.0031504eel

A formic acid and dissolved oxygen microfluidic fuel cell demonstrated superior performance to air-breathing cells by a unique, hierarchical combination of optimized electrocatalyst particle geometry based on Pd nanocubes enclosed in {100} crystallographic planes and flow-through microporous electrodes with high surface area. The high performance is attributed to the favorable size and shape of the catalyst, the high surface-to-volume ratio, and the high localized mass transport rates inside the flow-through microporous electrodes. These results open up the opportunity to utilize oxygen as oxidant in miniaturized electrochemical cells without the constraints imposed by integration of air-breathing cathodes exposed to surrounding air.

• 出版日期2015