Pt-AlOOH-SiO2/graphene hybrid nanomaterial with very high electrocatalytic performance for methanol oxidation
| Autor: | Thanh Thuy Thi Tran, Phuong Nguyen, Thu Ha Thi Vu, Nadine Essayem, Lien Thi Tran, Hong Ngan Thi Le |
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| Přispěvatelé: | Institut de recherches sur la catalyse et l'environnement de Lyon (IRCELYON), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), IRCELYON-C'Durable (CDURABLE), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL) |
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Inorganic chemistry Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 01 natural sciences 7. Clean energy Nanomaterials Catalysis law.invention chemistry.chemical_compound law Electrical and Electronic Engineering Physical and Theoretical Chemistry High-resolution transmission electron microscopy Renewable Energy Sustainability and the Environment Graphene [CHIM.CATA]Chemical Sciences/Catalysis Chronoamperometry 021001 nanoscience & nanotechnology [SDE.ES]Environmental Sciences/Environmental and Society 0104 chemical sciences chemistry Methanol Cyclic voltammetry 0210 nano-technology Hybrid material |
| Zdroj: | Journal of Power Sources Journal of Power Sources, Elsevier, 2015, 276, pp.340-346. ⟨10.1016/j.jpowsour.2014.11.128⟩ |
| ISSN: | 0378-7753 1873-2755 |
| DOI: | 10.1016/j.jpowsour.2014.11.128 |
| Popis: | Hybrid materials comprising of Pt dispersed on AlOOH, SiO2 doped graphene are successfully synthesized. The structure and morphology of the catalysts are characterized by X-ray diffraction, TEM, HRTEM and X-ray photoelectron spectroscopy. Their electrocatalytic properties are investigated by cyclic voltammetry, chronoamperometry and chronopotentiometry. The experimental results show that the presence of AlOOH and SiO2 favors the Pt nanoparticles dispersion on the graphene sheets. This greatly improves the electrocatalytic activities of Pt/graphene catalysts for methanol oxidation. In particular, the catalyst containing 7% of Al and Si exhibits the best electrocatalytic performance for methanol oxidation with mass activity of 1720 mA mg−1. Therefore, Pt–AlOOH–SiO2/graphene hybrid is shown to be an effective catalyst for fuel cell application. |
| Databáze: | OpenAIRE |
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