Corrosion Resistance of Platinum, Copper Nickel, and Tantalum in Liquid Oxygen Difluoride

Toy, S. M.

doi:10.1149/1.2426710

Cited by 1 publication

(2 citation statements)

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“…However, the dissolution of these transition metals remains the major reason for the severe degradation of the catalytic performance of the alloyed catalysts. 20,21 Alternatively, this issue can be addressed by alloying Pd with other noble metals. In the previous work, we found the Au−Pd alloy structures exhibiting great activities toward EOR compared to the pure Pd counterparts.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In the past decade, much attention has been drawn to the design of alloying catalysts, for instance, alloying Pd with non-noble transition metals, such as Co, Ni, Cu, Fe, Sn, etc. − Those Pd-based NCs have been proved to enhance the catalytic activity due to optimization of the electronic structure and the downshift of the d-band of Pd. However, the dissolution of these transition metals remains the major reason for the severe degradation of the catalytic performance of the alloyed catalysts. , Alternatively, this issue can be addressed by alloying Pd with other noble metals. In the previous work, we found the Au–Pd alloy structures exhibiting great activities toward EOR compared to the pure Pd counterparts .…”

Section: Introductionmentioning

confidence: 99%

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Interstitial Hydrogen Atom Modified PdPt Nanosheets for Efficient Ethanol Electro-oxidation with High C–C Bond Cleavage Selectivity

Sun

Huang

Shan

et al. 2022

ACS Appl. Energy Mater.

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Direct ethanol fuel cells (DEFCs) are a type of promising portable power source with low environmental pollution and high energy density. However, the further commercialization of DEFCs is hindered by the incomplete oxidation of ethanol on the electrocatalysts. Herein, we report a successful synthesis of ultrathin PdPtH nanosheets (NSs) for the first time by the in situ formation of interstitial hydrogen atoms accompanied by wet-chemical coreduction of Pd and Pt precursors. The PdPtH NSs possess selectivity of 15.1% related to C–C bond splitting for ethanol complete oxidation to CO2 through the C1 pathway at a low potential, while the contrast selectivity is 4.8% for Pt black, 9.2% for commercial Pd black, and 11.7 for PdH NSs, respectively. Accordingly, the PdPtH NSs exhibited enhanced catalytic activity in comparison to the counterparts. The mass activity toward ethanol oxidation reaction (EOR) of the PdPtH NSs is 5.2 times and 87 times higher than that of commercial Pd and commercial Pt, respectively. The structure stability and growth mechanism of the PdPtH NSs were also investigated. The results of in situ Fourier transform infrared spectra revealed a stronger C–C bond cleavage ability and CO stripping shows the better antipoisoning properties of the PdPtH NSs arising from the cooperation of the PdPt alloy with interstitial H atoms.

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Section: ■ Introductionmentioning

confidence: 99%