| 1. |
- Chang, J. F., et al.
(författare)
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Ni2P Makes Application of the PtRu Catalyst Much Stronger in Direct Methanol Fuel Cells
- 2015
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Ingår i: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 8:19, s. 3340-3346
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Tidskriftsartikel (refereegranskat)abstract
- PtRu is regarded as the best catalyst for direct methanol fuel cells, but the performance decay resulting from the loss of Ru seriously hinders commercial applications. Herein, we demonstrated that the presence of Ni2P largely reduces Ru loss, which thus makes the application of PtRu much stronger in direct methanol fuel cells. Outstanding catalytic activity and stability were observed by cyclic voltammetry. Upon integrating the catalyst material into a practical direct methanol fuel cell, the highest maximum power density was achieved on the PtRu-Ni2P/C catalyst among the reference catalysts at different temperatures. A maximum power density of 69.9mWcm-2 at 30°C was obtained on PtRu-Ni2P/C, which is even higher than the power density of the state-of-the-art commercial PtRu catalyst at 70°C (63.1mWcm-2). Moreover, decay in the performance resulting from Ru loss was greatly reduced owing to the presence of Ni2P, which is indicative of very promising applications.
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| 2. |
- Li, Guoqiang, et al.
(författare)
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Activity of Platinum/Carbon and Palladium/Carbon Catalysts Promoted by Ni2P in Direct Ethanol Fuel Cells
- 2014
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Ingår i: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 7:12, s. 3374-3381
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Tidskriftsartikel (refereegranskat)abstract
- Ethanol is an alternative fuel for direct alcohol fuel cells, inwhich the electrode materials are commonly based on Pt orPd. Owing to the excellent promotion effect of Ni2P that wasfound in methanol oxidation, we extended the catalyst systemof Pt or Pd modified by Ni2P in direct ethanol fuel cells. TheNi2P-promoted catalysts were compared to commercial catalystsas well as to reference catalysts promoted with only Ni oronly P. Among the studied catalysts, Pt/C and Pd/C modifiedby Ni2P (30 wt%) showed both the highest activity and stability.Upon integration into the anode of a homemade direct ethanolfuel cell, the Pt-Ni2P/C-30% catalyst showed a maximumpower density of 21 mWcm-2, which is approximately twotimes higher than that of a commercial Pt/C catalyst. The Pd-Ni2P/C-30% catalyst exhibited a maximum power density of90 mWcm-2. This is approximately 1.5 times higher than thatof a commercial Pd/C catalyst. The discharge stability on bothtwo catalysts was also greatly improved over a 12 h dischargeoperation.
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