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Nafion-stabilized Pt nanoparticle colloidal solution is synthesized through ethylene glycol reduction.Pt/Nafion added with carbon black as electric conduction material(labeled Pt/Nafion-XC72) shows excellent electrochemical property compared with Pt/C.After a 300-cycle discharging durability test,the cell performance of membrane electrode assembly(MEA) with the Pt/Nafion-XC72 and Pt/C catalysts indicates a 29.9% and 92.2% decrease,respectively.The charge transfer resistances of Pt/Nafion-XC72 and Pt/C increase by 27.2% and 101.9%,respectively.The remaining electrochemically active surface area of Pt is about 61.7% in Pt/Nafion-XC72 and about 38.1% in Pt/C after the durability test.The particle size of Pt/C increases from about 5.1 nm to about 10.8 nm but only from 3.6 nm to 5.8 nm in the case of Pt/Nafion-XC72.These data suggest that Pt/Nafion-XC72 as a catalyst can enhance the durability of PEMFCs compared with Pt/C.
Nafion-stabilized Pt nanoparticle colloidal solution was synthesized through ethylene glycol reduction. Pt / Nafion added with carbon black as electric conduction material (labeled Pt / Nafion-XC72) shows excellent electrochemical property compared with Pt / cycle discharge durability test, the cell performance of membrane electrode assembly (MEA) with the Pt / Nafion®-XC72 and Pt / C catalysts indicated a 29.9% and 92.2% decrease, respectively. and Pt / C increase by 27.2% and 101.9%, respectively. The remaining electrochemically active surface area of Pt is about 61.7% in Pt / Nafion®-XC72 and about 38.1% in Pt / C after the durability test. The particle size of Pt / C increases from about 5.1 nm to about 10.8 nm but only from 3.6 nm to 5.8 nm in the case of Pt / Nafion®-XC72. The data suggest that Pt / Nafion®-XC72 as a catalyst can enhance the durability of PEMFCs compared with Pt / C.