Se-modified Ru nanoparticles as ORR catalysts

Johnston, Christina; Cao, Dianxue; Choi, Jong‐Ho; Babu, P.; Garzón, Fernando H.; Zelenay, Piotr

doi:10.1016/j.jelechem.2011.07.015

Cited by 13 publications

(23 citation statements)

References 69 publications

(125 reference statements)

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“…As such, for comparison, we include results in non-Ru-Pt catalysts for methanol electrooxidation, which deal with such morphological aspects [46]. This comparison is also experimentally made in a similar context such as oxygen reduction reaction for non-Pt-Ru catalysts [57,58].…”

Section: Experimental Results Iii: Non-ru-pt Catalystsmentioning

confidence: 99%

Ruthenium–Platinum Catalysts and Direct Methanol Fuel Cells (DMFC): A Review of Theoretical and Experimental Breakthroughs

et al. 2017

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Abstract:The increasing miniaturization of devices creates the need for adequate power sources and direct methanol fuel cells (DMFC) are a strong option in the various possibilities under current development. DMFC catalysts are mostly based on platinum, for its outperformance in three key areas (activity, selectivity and stability) within methanol oxidation framework. However, platinum poisoning with products of methanol oxidation led to the use of alloys. Ruthenium-platinum alloys are preferred catalysts active phases for methanol oxidation from an industrial point of view and, indeed, ruthenium itself is a viable catalyst for this reaction. In addition, the route of methanol decomposition is crucial in the goal of producing H 2 from water reaction with methanol. However, the reaction pathway remains elusive and new approaches, namely in computational methods, have been ensued to determine it. This article reviews the various recent theoretical approaches for determining the pathway of methanol decomposition, and systematizes their validation with experimental data, within methodological context.

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Section: Experimental Results Iii: Non-ru-pt Catalystsmentioning

confidence: 99%

Ruthenium–Platinum Catalysts and Direct Methanol Fuel Cells (DMFC): A Review of Theoretical and Experimental Breakthroughs

et al. 2017

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“…RuSe-based catalysts demonstrate particularly promising performance [6]. Selenium is proposed to inhibit the oxidation of Ru sites to inactive Ru oxides, as supported by a number of reports [7][8][9][10] that are discussed in detail in Part 1 [1].…”

Section: Introductionmentioning

confidence: 91%

“…Pt/Ru black (Johnson Matthey) was used at the anode and Se/Ru or Pt black (Johnson Matthey) was used at the cathode. The synthesis of the Se/Ru catalysts is described in Part 1 [1]. In brief, the Se/Ru(xyl) was prepared from a synthetic path using higher temperature and xylenes solvent, whereas Se/Ru(aq) was prepared using lower temperature and water as the solvent.…”

Section: Fuel Cell Testsmentioning

confidence: 99%

“…Highly active, methanol-tolerant oxygen reduction catalysts are required for the advancement of direct methanol fuel cells (DMFCs), as discussed in detail in Part 1 [1]. Current DMFC designs use methanol-permeable Nafion Ò membranes that allow methanol to reach the cathode, resulting in a loss of efficiency due to fuel consumption and the formation of a mixed potential.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we have investigated the suitability for DMFCs of the Se/Ru catalyst prepared by the simple aqueous process reported in Part 1 [1]. Using the RDE method, the methanol tolerance of Se/Ru(aq) has been evaluated and compared to Ru black.…”

Section: Introductionmentioning

confidence: 99%

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Choi¹,

Johnston²,

Cao³

et al. 2011

Journal of Electroanalytical Chemistry

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Recent Advances in Engineered Ru‐Based Electrocatalysts for the Hydrogen/Oxygen Conversion Reactions

Cao

Huo

et al. 2022

Advanced Energy Materials

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Figure 6. a,b) Structural simulation and HAADF-STEM of Ru-N/G SACs. c) Fourier transform magnitudes of the experimental Ru K-edge extended X-ray absorption fine structure (EXAFS) spectra of the Ru-N/G and other comparative samples.Reproduced with permission. [28] Copyright 2017, American Chemical Society. d) Structural simulation of Pt-Ru dimer dispersed on NCNT. e) ΔG H* plots for different H coverages. Reproduced with permission. [95] Copyright 2019, Nature Publishing Group. f) Schematic illustration of the synthesis of NiRu 0.13 -BDC by ion-exchange method. g) The simulated charge difference between NiRu 0.13 -BDC and Ni-BDC. Yellow represents charge accumulation and blue represents charge depletion. Reproduced with permission. [96] Copyright 2021, Nature Publishing Group. h) In situ X-ray absorption near edge structure (XANES) of Ru K-edge under OER electrochemical conditions. i) Gibbs free energy diagram during OER process on Ru/CoFe-LDHs. Reproduced with permission.

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Se-modified Ru nanoparticles as ORR catalysts – Part 1: Synthesis and analysis by RRDE and in PEFCs

Cited by 13 publications

References 69 publications

Ruthenium–Platinum Catalysts and Direct Methanol Fuel Cells (DMFC): A Review of Theoretical and Experimental Breakthroughs

Ruthenium–Platinum Catalysts and Direct Methanol Fuel Cells (DMFC): A Review of Theoretical and Experimental Breakthroughs

Se-modified Ru nanoparticles as ORR catalysts

Recent Advances in Engineered Ru‐Based Electrocatalysts for the Hydrogen/Oxygen Conversion Reactions

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