Next-generation anion exchange membrane water electrolyzers operating for commercially relevant lifetimes

Motealleh, Behrooz; Liu, Zengcai; Masel, Richard I.; Sculley, Julian P.; Ni, Zheng Richard; Meroueh, Laureen

doi:10.1016/j.ijhydene.2020.10.244

Cited by 164 publications

(121 citation statements)

References 21 publications

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“…In the proton exchange membrane water electrolysis cells, proton conductor polymeric membranes (perfluorosulfonic acid membranes), acting as a solid electrolyte, are used to separate the anode and the cathode [6]. Cells run at low temperatures (25-80 • C) [6] and use titanium bipolar plates that are compatible with the existing corrosive operation conditions [8].…”

Section: Proton Exchange Membrane Water Electrolysis (Pemwe)mentioning

confidence: 99%

“…Weak alkaline operation conditions of the AEMWE cells are compatible with cheap electrode materials, mostly based on Ni and Co, that can be similar to those used in traditional AWE. They also enable the use of membranes cheaper than those incorporated in PEMWE cells [8,19,20]. These anion exchange membrane (AEM) are polymeric membranes that replace the traditional AWE diaphragm circumventing the gas cross-over between the anodic and cathodic chambers [6].…”

Section: Anion Exchange Membrane Water Electrolysismentioning

confidence: 99%

“…Water electrolyzers can operate at high and low temperatures. Solid oxide electrolyzer cells (SOEC) operate at high temperatures, while three major technologies for water electrolyzers operate at low temperatures (around room temperature): alkaline water electrolysis (AWE), proton exchange membrane water electrolysis (PEMWE), and anion exchange membrane water electrolysis (AEMWE) [7,8]. Among other requirements, in this latter case, electrode catalysts must present high electrochemical activity and stability, be cheap, and have a secure supply.…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in Alkaline Exchange Membrane Water Electrolysis and Electrode Manufacturing

et al. 2021

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Water electrolysis to obtain hydrogen in combination with intermittent renewable energy resources is an emerging sustainable alternative to fossil fuels. Among the available electrolyzer technologies, anion exchange membrane water electrolysis (AEMWE) has been paid much attention because of its advantageous behavior compared to other more traditional approaches such as solid oxide electrolyzer cells, and alkaline or proton exchange membrane water electrolyzers. Recently, very promising results have been obtained in the AEMWE technology. This review paper is focused on recent advances in membrane electrode assembly components, paying particular attention to the preparation methods for catalyst coated on gas diffusion layers, which has not been previously reported in the literature for this type of electrolyzers. The most successful methodologies utilized for the preparation of catalysts, including co-precipitation, electrodeposition, sol–gel, hydrothermal, chemical vapor deposition, atomic layer deposition, ion beam sputtering, and magnetron sputtering deposition techniques, have been detailed. Besides a description of these procedures, in this review, we also present a critical appraisal of the efficiency of the water electrolysis carried out with cells fitted with electrodes prepared with these procedures. Based on this analysis, a critical comparison of cell performance is carried out, and future prospects and expected developments of the AEMWE are discussed.

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Section: Proton Exchange Membrane Water Electrolysis (Pemwe)mentioning

confidence: 99%

Section: Anion Exchange Membrane Water Electrolysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recent Advances in Alkaline Exchange Membrane Water Electrolysis and Electrode Manufacturing

et al. 2021

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“…Hydrolite (formerly PO-CellTech) also reported >1000 hours in H 2 /CO 2 -free air in technical (250 cm 2 ) cells at 67 °C [ 4 ]. Dioxide Materials meanwhile have reported over 10,000 hours in an alkaline water electrolyzer using Sustainion ® Grade-T membrane, at 60 °C and 1 A/cm 2 current density [ 5 ]. These standout results herald significant steps towards demonstrating the full commercial potential of AEM technology.…”

Section: Introductionmentioning

confidence: 99%

“…From a performance point of view, anion conductivity and water transport are critical, while electrical isolation and gas separation are similarly important, especially when examining cell durability. These latter can be considered ‘mechanical’ components of the membrane function, provided primarily by ionomer backbones as well as possible additives [ 5 ], reinforcing structures [ 13 , 14 , 15 , 16 ], or crosslinking [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Design Strategies for Alkaline Exchange Membrane–Electrode Assemblies: Optimization for Fuel Cells and Electrolyzers

Ashdot

Kattan²,

Kitayev

et al. 2021

Membranes

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Production of hydrocarbon-based, alkaline exchange, membrane–electrode assemblies (MEA’s) for fuel cells and electrolyzers is examined via catalyst-coated membrane (CCM) and gas-diffusion electrode (GDE) fabrication routes. The inability effectively to hot-press hydrocarbon-based ion-exchange polymers (ionomers) risks performance limitations due to poor interfacial contact, especially between GDE and membrane. The addition of an ionomeric interlayer is shown greatly to improve the intimacy of contact between GDE and membrane, as determined by ex situ through-plane MEA impedance measurements, indicated by a strong decrease in the frequency of the high-frequency zero phase angle of the complex impedance, and confirmed in situ with device performance tests. The best interfacial contact is achieved with CCM’s, with the contact impedance decreasing, and device performance increasing, in the order GDE >> GDE+Interlayer > CCM. The GDE+interlayer fabrication approach is further examined with respect to hydrogen crossover and alkaline membrane electrolyzer cell performance. An interlayer strongly reduces the rate of hydrogen crossover without strongly decreasing electrolyzer performance, while crosslinking the ionomeric layer further reduces the crossover rate though also limiting device performance. The approach can be applied and built upon to improve the design and production of alkaline, and more generally, hydrocarbon-based MEA’s and exchange membrane devices.

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Membranes in Hydrogen Production by Water Electrolysis

2024

Membranes for Energy Applications

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Next-generation anion exchange membrane water electrolyzers operating for commercially relevant lifetimes

Cited by 164 publications

References 21 publications

Recent Advances in Alkaline Exchange Membrane Water Electrolysis and Electrode Manufacturing

Recent Advances in Alkaline Exchange Membrane Water Electrolysis and Electrode Manufacturing

Design Strategies for Alkaline Exchange Membrane–Electrode Assemblies: Optimization for Fuel Cells and Electrolyzers

Membranes in Hydrogen Production by Water Electrolysis

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