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- W2356379845 abstract "Ineffective Pt/C catalysts were reprocessed in order to be reused in proton exchange membrane fuel cell (PEMFC). Pt residues were obtained by heat-treatment of ineffective Pt/C catalysts at a higher temperature in air, and then were dissolved by a suitable amount of aqua regia. The solution was boiled, concentrated and diluted again to form the H2PtCl6 solution. Pt/C catalysts were prepared with the H2PtCl6 solution by the inorganic colloid method.TEM results showed that the Pt/C catalyst with 2.6 nm platinum crystallites, a higher dispersion and a very narrow size distribution was achieved at optimal conditions. XRD analysis indicated the structural characteristic of higher relative content and smaller d-spacing of the Pt (111) crystal face, and lower crystallization degree of Pt. This benefited the acceleration of the oxygen reduction reaction in PEMFC. The cyclic voltammetry measurement exhibited a better electrocatalytic performance of prepared Pt/C catalysts for the oxygen and hydrogen electrode processes." @default.
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- W2356379845 date "2006-01-01" @default.
- W2356379845 modified "2023-09-23" @default.
- W2356379845 title "Reprocessing of the ineffective Pt/C catalysts in PEMFC" @default.
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