Development of efficient membrane electrode assembly for low cost hydrogen production by anion exchange membrane electrolysis

Vincent, Immanuel; Krüger, Andries J.; Bessarabov, Dmitri

doi:10.1016/j.ijhydene.2017.03.069

Cited by 174 publications

(148 citation statements)

References 27 publications

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“…This result not only reflects the three-electrode cell results very nicely, but also shows that Ni-based electrocatalysts, particularly the Ni 90 Fe 10 catalyst, are promising electrocatalysts for use as AEMWE anodes. The Ni 90 Fe 10 catalyst shows similar performance as the Ir noble metal in 1 M KOH and outperforms the noble metal in 0.1 M. The nickel-based materials in this work also show comparable, if not better, performance than other AEMWE tests carried out with similar set ups [12,53].…”

Section: Aemwe Experimentsmentioning

confidence: 51%

The Performance of Nickel and Nickel-Iron Catalysts Evaluated As Anodes in Anion Exchange Membrane Water Electrolysis

et al. 2019

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Anion exchange membrane water electrolysis (AEMWE) is an efficient, cost-effective solution to renewable energy storage. The process includes oxygen and hydrogen evolution reactions (OER and HER); the OER is kinetically unfavourable. Studies have shown that nickel (Ni)- iron (Fe) catalysts enhance activity towards OER, and cerium oxide (CeO2) supports have shown positive effects on catalytic performance. This study covers the preliminary evaluation of Ni, Ni90Fe10 (at%) and Ni90Fe10/CeO2 (50 wt%) nanoparticles (NPs), synthesized by chemical reduction, as OER catalysts in AEMWE using commercial membranes. Transmission electron microscopy (TEM) images of the Ni-based NPs indicate NPs roughly 4–6 nm in size. Three-electrode cell measurements indicate that Ni90Fe10 is the most active non-noble metal catalyst in 1 and 0.1 M KOH. AEMWE measurements of the anodes show cells achieving overall cell voltages between 1.85 and 1.90 V at 2 A cm−2 in 1 M KOH at 50 °C, which is comparable to the selected iridium-black reference catalyst. In 0.1 M KOH, the AEMWE cell containing Ni90Fe10 attained the lowest voltage of 1.99 V at 2 A cm−2. Electrochemical impedance spectroscopy (EIS) of the AEMWE cells using Ni90Fe10/CeO2 showed a higher ohmic resistance than all catalysts, indicating the need for support optimization.

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Section: Aemwe Experimentsmentioning

confidence: 51%

The Performance of Nickel and Nickel-Iron Catalysts Evaluated As Anodes in Anion Exchange Membrane Water Electrolysis

et al. 2019

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“…These catalyst layer thicknesses were estimated from the properties of the catalysts used (see Table 1 and Equation 23). Scanning electron micrographs of electrolyzer CLs at similar catalyst loadings suggest CL thicknesses of 670 µm on the anode and 118 µm on the cathode, although with a different binder (18). Figure 6 shows the result of reducing CL thickness to 20 µm, which represents a significant decrease in catalyst loading and potentially a decrease in device cost.…”

Section: Catalyst-layer Thicknessmentioning

confidence: 99%

Modeling Electrolyte Composition Effects on Anion-Exchange-Membrane Water Electrolyzer Performance

Stanislaw¹,

Gerhardt²,

Weber³

2019

ECS Trans.

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Anion-exchange membrane (AEM) water electrolysis could allow inexpensive and greener hydrogen production than other alternatives, such as steam methane reforming. To increase performance, hydroxide salts are often added to the water feed, with the tradeoff of corrosivity and complexity. Recently, carbonate salts that are less corrosive have shown promise, but their specific functionality remains unknown. In this paper, we use a mathematical model to compare an AEM electrolyzer with added potassium carbonate to an AEM electrolyzer with added potassium hydroxide. We show that the conductivity of the carbonate-form membrane has little impact on the performance of the device, but that carbonate ions replace hydroxide in the ionomer, which creates a Nernstian voltage difference across the membrane. The replacement of hydroxide anions with carbonate also reduces utilization of the catalyst in the anode, resulting in an additional voltage loss. * Estimated based on information from Pavel et al. (5) + Given by Pavel et al. (5) † Estimated based on measured exchange current densities for non-platinum-group-metal catalysts in alkaline environments (14).

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“…2). Also, the Ni foam [14] and Ni fiber paper [15] could be used as an electrode which is suitable to use in a zero-gap cell with or without AEM as it provides the porous media allowing effective gas removal. Moreover, both catalyst-coated membrane (without catalyst support) and catalyst-coated substrate (electrode or gas diffusion layer (GDL)) approaches could be used for MEA preparation.…”

Section: Chemical Problems 2018 No 3 (16)mentioning

confidence: 99%

Electrocatalysts for Water Electrolysis

Aliyev¹,

Guseynova²,

Gurbanova³

et al. 2018

Chemical Problems

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The review paper accumulates the latest information on the analysis of catalyst synthesis for the electrolysis of water in alkaline and partially in acidic media. Literature data on the production of electro-catalysts based on noble, refractory, transition and pure metals, as well as metals doped with molybdenum, phosphorus, and other elements, are presented. Given the different methods of synthesis of electro-catalyst, the advantage of the electrochemical method is emphasized as easy, accessible method enabling to regulate the composition of synthesized electrodes by changing the content of an electrolyte and the conditions of electrolysis, controlling the properties of synthesized materials.

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Development of efficient membrane electrode assembly for low cost hydrogen production by anion exchange membrane electrolysis

Cited by 174 publications

References 27 publications

The Performance of Nickel and Nickel-Iron Catalysts Evaluated As Anodes in Anion Exchange Membrane Water Electrolysis

The Performance of Nickel and Nickel-Iron Catalysts Evaluated As Anodes in Anion Exchange Membrane Water Electrolysis

Modeling Electrolyte Composition Effects on Anion-Exchange-Membrane Water Electrolyzer Performance

Electrocatalysts for Water Electrolysis

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