Studies of electrochemical performance of carbon supported Pt–Cu nanoparticles as anode catalysts for direct borohydride–hydrogen peroxide fuel cell
| Autor: | Wei Yi, Xianyou Wang, Yunfeng Song, Lanhua Yi, Benan Hu, Guishan Zou |
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| Rok vydání: | 2011 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry Inorganic chemistry Energy Engineering and Power Technology Chronoamperometry Electrochemistry Borohydride Electrocatalyst Catalysis Anode chemistry.chemical_compound Electrical and Electronic Engineering Physical and Theoretical Chemistry Cyclic voltammetry Bimetallic strip |
| Zdroj: | Journal of Power Sources. 196:9924-9930 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2011.08.063 |
| Popis: | Carbon supported Pt–Cu bimetallic nanoparticles are prepared by a modified NaBH4 reduction method in aqueous solution and used as the anode electrocatalyst of direct borohydride–hydrogen peroxide fuel cell (DBHFC). The physical and electrochemical properties of the as-prepared electrocatalysts are investigated by transmission electron microscopy (TEM), X-ray diffraction (XRD), cyclic voltammetry (CV), chronoamperometry (CA), chronopotentiometry (CP) and fuel cell test. The results show that the carbon supported Pt–Cu bimetallic catalysts have much higher catalytic activity for the direct oxidation of BH4− than the carbon supported pure nanosized Pt catalyst, especially the Pt50Cu50/C catalyst presents the highest catalytic activity among all as-prepared catalysts, and the DBHFC using Pt50Cu50/C as anode electrocatalyst and Pt/C as cathode electrocatalyst shows as high as 71.6 mW cm−2 power density at a discharge current density of 54.7 mA cm−2 at 25 °C. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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