A novel sputtered Pd mesh architecture as an advanced electrocatalyst for highly efficient hydrogen production

Lucas-Consuegra, A. de; Osa, A.R. de la; Calcerrada, A.B.; Linares, J.; Horwat, David

doi:10.1016/j.jpowsour.2016.05.004

Cited by 29 publications

(38 citation statements)

References 58 publications

(60 reference statements)

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“…The feasibility of the alcohol electrolysis concept in solid-state PEM electrolysis cells with high surface area gas diffusion electrodes has been so far validated for the cases of methanol [10,[22][23][24][25][26][27][28][29][30], ethanol and second generation industrial bioethanol [6,29,[31][32][33][34][35][36], and the concept has also been applied for hydrogen production from formic acid [37], glycerol [38][39][40][41], ethylene glycol [29,42] and other diols [43].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen from electrochemical reforming of C1–C3 alcohols using proton conducting membranes

Sapountzi

Tsampas

Fredriksson

et al. 2017

International Journal of Hydrogen Energy

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This study investigates the production of hydrogen from the electrochemical reforming of short-chain alcohols (methanol, ethanol, iso-propanol) and their mixtures. High surface gas diffusion Pt/C electrodes were interfaced to a Nafion polymeric membrane. The assembly separated the two chambers of an electrochemical reactor, which were filled with anolyte (alcohol+H2O or alcohol+H2SO4) and catholyte (H2SO4) aqueous solutions. The half-reactions, which take place upon polarization, are the alcohol electrooxidation and the hydrogen evolution reaction at the anode and cathode, respectively. A standard Ag/AgCl reference electrode was introduced for monitoring the individual anodic and cathodic overpotentials. Our results show that roughly 75% of the total potential losses are due to sluggish kinetics of the alcohol electrooxidation reaction. Anodic overpotential becomes larger as the number of C-atoms in the alcohol increases, while a slight dependence on the pH was observed upon changing the acidity of the anolyte solution. In the case of alcohol mixtures, it is the largest alcohol that dictates the overall cell performance.

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Section: Introductionmentioning

confidence: 99%

Hydrogen from electrochemical reforming of C1–C3 alcohols using proton conducting membranes

Sapountzi

Tsampas

Fredriksson

et al. 2017

International Journal of Hydrogen Energy

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“…Finding an alternative to environmentally unfriendly energy resources from fossil fuels is becoming an urgent task owing to the increasing environmental pollution and energy shortage12345. Therefore, studies focusing on exploring pollution-free energy production, conversion and storage devices have attracted a large number of investigators678.…”

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confidence: 99%

Pt-Bi decorated nanoporous gold for high performance direct glucose fuel cell

Hong

Yin

Yan

et al. 2016

Sci Rep

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Binary PtBi decorated nanoporous gold (NPG-PtBi) electrocatalyst is specially designed and prepared for the anode in direct glucose fuel cells (DGFCs). By using electroless and electrochemical plating methods, a dense Pt layer and scattered Bi particles are sequentially coated on NPG. A simple DGFC with NPG-PtBi as anode and commercial Pt/C as cathode is constructed and operated to study the effect of operating temperatures and concentrations of glucose and NaOH. With an anode noble metal loading of only 0.45 mg cm−2 (Au 0.3 mg and Pt 0.15 mg), an open circuit voltage (OCV) of 0.9 V is obtained with a maximum power density of 8 mW cm−2. Furthermore, the maximum gravimetric power density of NPG-PtBi is 18 mW mg−1, about 4.5 times higher than that of commercial Pt/C.

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“…In this sense, previous works demonstrate the viability of the electrochemical reforming of different alcohols such as ethanol, ethylene glycol, glycerol and 1,2‐propandiol in alkaline media. In addition, various catalysts based on rhodium, palladium or mixtures of palladium, for example, with other catalysts have been tested as alternatives to the conventional ones. In particular, palladium is one of the most used anodic catalysts in alkaline media owing to its cost and good behavior for the electrochemical reforming of alcohols, as demonstrated in previous studies .…”

Section: Introductionmentioning

confidence: 89%

“…Firstly, in order to evaluate the electrochemical activity of the anodic electrodes (Pd supported on different carbonaceous supports) toward the ethanol electro‐oxidation reaction (EOR) in alkaline media, cyclic voltammetry experiments were carried out in an aqueous 2 mol L −1 ethanol and 1 mol L −1 KOH solution in a three‐electrode electrochemical glass cell (half‐cell), as explained elsewhere . The cell consisted of an Ag/AgCl reference electrode (3 mol L −1 KCl; Metrohm), a counter electrode with a platinum foil (Metrohm) and a working electrode (prepared following the procedure described above).…”

Section: Methodsmentioning

confidence: 99%

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Optimization of the catalytic support and membrane for the electrochemical reforming of ethanol in alkaline media

Calcerrada

Osa

Romero

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: In this work, the influence of the anodic catalyst carbonaceous support and the membrane on the electrochemical reforming of ethanol for hydrogen production in alkaline media has been studied. Physicochemical characterization and electrochemical activity measurements were performed for different palladium-based anodic catalysts. The best anodic catalyst was scaled up to two different membrane electrode assemblies (MEAs) based on anion exchange membranes (AEMs): Tokuyama and KOH-doped polybenzimidazole (PBI) membranes. In both systems, the influence of the temperature and the stability were evaluated for the electrochemical reforming of ethanol. RESULTS: Among the different investigated catalysts, palladium supported on non-functionalized low-surface nanofibers was the best anodic catalyst for the electrochemical reforming of ethanol in alkaline media, which was attributed to the specific physicochemical and textural properties of this material. In addition, the use of a Tokuyama membrane allowed to obtain the highest electrocatalytic activity in hydrogen production together with a suitable stability behavior. Under the optimized conditions, current density values up to 120 mA cm −2 at 1.4 V were obtained, leading to lower energy values for hydrogen production compared with those of water electrolysis in commercial alkaline electrolyzers. CONCLUSION: The choice of palladium supported on non-functionalized nanofibers as anodic catalyst and a Tokuyama membrane allows to obtain the best MEA configuration for the electrochemical reforming of ethanol for hydrogen production.

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A novel sputtered Pd mesh architecture as an advanced electrocatalyst for highly efficient hydrogen production

Cited by 29 publications

References 58 publications

Hydrogen from electrochemical reforming of C1–C3 alcohols using proton conducting membranes

Hydrogen from electrochemical reforming of C1–C3 alcohols using proton conducting membranes

Pt-Bi decorated nanoporous gold for high performance direct glucose fuel cell

Optimization of the catalytic support and membrane for the electrochemical reforming of ethanol in alkaline media

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