Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7707218 | International Journal of Hydrogen Energy | 2018 | 10 Pages |
Abstract
PtPd nanocubes (NCs) were uniformly deposited on the reduced graphene oxides (RGOs) via a one-pot solvothermal reduction. These PtPd NCs were enclosed with (100) facet. Their size can be tuned from 11 to 27Â nm by controlling their composition. Under the optimum atomic ratio of Pt/Pd (1:5), the as-prepared RGO-supported PtPd NCs show a superior catalytic efficiency of ethanol oxidation reaction (EOR) with a specific activity of 2.3Â mAÂ cmâ2 and a mass activity of 1.08Â AÂ mgâ1Â Pt, far above those for the RGO-supported Pt nanoparticles (0.3Â mAÂ cmâ2 for specific activity and 0.018Â AÂ mgâ1Â Pt for mass activity). Besides, these EOR catalysts exhibit a high CO-tolerance without significant current decay during steady-state polarization at 0.6Â V over 4000Â s. Their durability is also remarkable with only 8.9% loss of their electrochemical surface area (ECSA) after 10Â 000 cycles of voltammetric test.
Related Topics
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Authors
Yuanyuan Zheng, Junhua Qiao, Junhua Yuan, Jianfeng Shen, Ai-jun Wang, Shengtang Huang,