Citation: WANG Yan-En, CAO Shuang, CUI Peng-Lei, TANG Ya-Wen, LU Tian-Hong. Electrocatalytic Reduction of Oxygen on Pt/C Catalysts with Different Pt Particles Sizes[J]. Chinese Journal of Inorganic Chemistry, ;2014, 30(4): 867-871. doi: 10.11862/CJIC.2014.126
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Pt/C catalyst with the different Pt particles sizes were prepared with the organic sol method, which was synthesized in a methanol solution by chemical reduction of the corresponding metal salts using SnCl2 as reducing agent. The catalysts which have different average size, great uniformity and high distribution of the metal particles were prepared by controlling the reacting condition. It was electrochemically proved that the effect of average particle size of ultrafine platinum particles for oxygen reduction was obvious. When the average particle size of Pt is 3.2 nm, the mass activity of the Pt/C catalysts for the oxygen reduction is the best. This effect may be related to the quantity of the oxygen-containing species on it, the apparent surface area of the platinum particles and the crystal structure.
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