The annealing influence on the microstructure and performance of Au@Ni core-shell bimetal as the cathode of low-temperature solid oxide fuel cells

Yang, Yongzhen; Ramasamy, Devaraj; Queirós, Rui P.; Loureiro, Francisco J.A.; Almeida, Carlos Manuel Rodrigues de; Julião, Paulo Sérgio Barros

doi:10.1016/j.ijhydene.2014.12.131

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…Previously, a bimetallic alloy at an optimum composition of Au 85 Ni 15 and prepared by a phase‐separation mechanism showed high electrocatalytic activity for the oxidation of formic acid . The same catalyst and Au@Ni core–shell nanoparticles also showed good activity for oxygen reduction in a low‐temperature solid oxide fuel cell; thus, the Au/NiO composite catalysts prepared herein are suitable for application to cells that can deliver high power densities. These materials offer high electronic conductivities and large effective surface areas and, thus, satisfy the prerequisites for application as catalysts in paper‐based fuel cells.…”

Section: Introductionmentioning

confidence: 76%

Sodium Percarbonate Based, Mixed‐Media Fuel Cells Supported on Paper with Gold/Nickel Oxide Catalysts

et al. 2016

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Self‐pumping T‐shaped mixed‐media paper‐based fuel cells are prepared for the first time by using sodium percarbonate as the fuel, KMnO4 as the oxidant, and a proton‐conducting gel as the electrolyte. Whatman filter papers serve as porous supports for the fluid (catholyte and anolyte) streams. The cell architecture with the Au/NiO (with 11 wt % Au) composite as the catalyst deposited at both electrodes delivers high current and power densities of 5.6 mA cm−2 and 2.6 mW cm−2, respectively. With this catalyst, the maximum current and power densities are enhanced by 75 and 121 %, respectively, as compared to the case without catalyst. Impedance analysis shows that ohmic and polarization resistances can be reduced significantly by use of the Au/NiO (with 11 wt % Au) composite as the catalyst. The ability of this cell to revive and restore its original performance once both the open‐circuit voltage and current density have decayed clearly demonstrates the applicability of this robust, easily disposable cell for powering micro‐/nanodevices.

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Section: Introductionmentioning

confidence: 76%

Sodium Percarbonate Based, Mixed‐Media Fuel Cells Supported on Paper with Gold/Nickel Oxide Catalysts

et al. 2016

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“…Reported methods to maintain the high density of nanoporous features of pure Pt electrode include electrode surface-capping by a thin layer of oxide, 44,46,57 employing the core-shell structure of the nanoparticles, 80 or alloying with another catalytically active element such as nickel 49 or ruthenium. 48 Pt.…”

Section: Chapter 4 4 Thermal Stability Enhancement Of Nanoporous Catmentioning

confidence: 99%

Improving the thermal stability of nanoporous metal electrode thin films for low temperature solid oxide fuel cells

Liu¹

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Sputtered Nanoporous PtNi Thin Film Cathodes with Improved Thermal Stability for Low Temperature Solid Oxide Fuel Cells

Liu

Yoon

Lee

et al. 2017

Electrochimica Acta

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The annealing influence on the microstructure and performance of Au@Ni core-shell bimetal as the cathode of low-temperature solid oxide fuel cells

Cited by 8 publications

References 26 publications

Sodium Percarbonate Based, Mixed‐Media Fuel Cells Supported on Paper with Gold/Nickel Oxide Catalysts

Sodium Percarbonate Based, Mixed‐Media Fuel Cells Supported on Paper with Gold/Nickel Oxide Catalysts

Improving the thermal stability of nanoporous metal electrode thin films for low temperature solid oxide fuel cells

Sputtered Nanoporous PtNi Thin Film Cathodes with Improved Thermal Stability for Low Temperature Solid Oxide Fuel Cells

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