Abstract
Pt/C catalysts were synthesized by a pulse-microwave assisted solvent chemical reduction (PMWSCR) process, and the microwave irradiation time effects on physico-chemical properties and electrocatalytic performances of catalysts were investigated. High resolution transmission electron microscope (HRTEM) images showed that the sizes of platinum nanoparticles synthesized by PMWSCR were about 1.9-2.6 nm, and the microwave irradiation time had an important influence on metal nanoparticle size and distribution. Cyclic voltammetric analysis revealed that the electrochemical surface areas of electrocatalysts were influenced by the microwave irradiation time, and the highest surface area of catalyst appeared when the microwave irradiation time was 12s. Single cell testing results proven that the catalyst had the maximum power density when the microwave irradiation time was 12s.
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