Highly quaternized polystyrene ionomers for high performance anion exchange membrane water electrolysers

Li, Dongguo; Park, Eun Joo; Zhu, Wenlei; Shi, Qiurong; Zhou, Yang; Tian, Hongmiao; Lin, Yuehe; Serov, Alexey; Zulevi, Barr; Baca, Ehren; Fujimoto, Cy; Chung, Hoon; Kim, Yu Seung

doi:10.1038/s41560-020-0577-x

Cited by 513 publications

(505 citation statements)

References 53 publications

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“…For example, some recent studies suggest that phenyl groups adsorbed on the catalyst surface get oxidized to phenols, which (because of the phenols' acidity) reduces the number of hydroxide ions. The solution would be phenyl group-free materials [19,20]. In direct contact with platinum catalysts, also the oxidation of organic cationic groups could be an issue [21].…”

Section: Specific Challenges For Anion Exchange Membranementioning

confidence: 99%

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Overview: State-of-the Art Commercial Membranes for Anion Exchange Membrane Water Electrolysis

Henkensmeier

Najibah

Harms³

et al. 2020

Journal of Electrochemical Energy Conversion and Storage

242

205

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One promising way to store and distribute large amounts of renewable energy is water electrolysis, coupled with transport of hydrogen in the gas grid and storage in tanks and caverns. The intermittent availability of renewal energy makes it difficult to integrate it with established alkaline water electrolysis technology. Proton exchange membrane (PEM) water electrolysis is promising, but limited by the necessity to use expensive platinum and iridium catalysts. The expected solution is anion exchange membrane (AEM) water electrolysis, which combines the use of cheap and abundant catalyst materials with the advantages of PEM water electrolysis, namely a low foot print, large operational capacity, and fast response to changing operating conditions. The key component for AEM water electrolysis is a cheap, stable, gas tight and highly hydroxide conductive polymeric AEM. Here we present target values and technical requirements for AEMs, discuss the chemical structures involved and the related degradation pathways, and give an overview over the most prominent and promising commercial AEMs (Fumatech Fumasep® FAA3, Tokuyama A201, Ionomr Aemion™, Dioxide materials Sustainion®, and membranes commercialized by Orion Polymer), and review their properties and performances of water electrolyzers using these membranes.

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Section: Specific Challenges For Anion Exchange Membranementioning

confidence: 99%

“…7. One recently reported AEM water electrolyzer using con-commercial membranes and ionomers, water as feed and NiFe/PtRu as catalyst reached 2.7 A cm −2 at 1.8 V [19]. However, this system was optimized for performance, and the authors caution that the durability needs to be improved.…”

Section: Performance Of Commercial Membranes In Anionmentioning

confidence: 99%

Overview: State-of-the Art Commercial Membranes for Anion Exchange Membrane Water Electrolysis

Henkensmeier

Najibah

Harms³

et al. 2020

Journal of Electrochemical Energy Conversion and Storage

242

205

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“…[3] Alkaline water electrolysis is preferred to PEMWE because of the availability of low-cost membranes or diaphragms as separators and non-noble electrocatalyst. [4] However, in alkaline water electrolysis, the use of thick diaphragm as separators results in relatively higher ohmic resistance in the cell. [5] Besides, an alkaline electrolyte is highly corrosive and sensitive to CO 2 to form insoluble K 2 CO 3 .…”

Section: Novel Electrocatalyst For Alkaline Membrane Water Electrolysismentioning

confidence: 99%

“…Alkaline anion exchange membrane water electrolysis (AAEMWE) uses solid polymer electrolytes and offers several advantages compared to conventional alkaline water electrolysis. [4] Recently, the problems with low ionic conductivity and poor chemical stability of AEMs are systematically addressed. [6][7][8][9][10][11] However, the slow reaction kinetics of oxygen evolution reaction (OER) in AAEMWE reduces the rate and amount of H 2 production.…”

Section: Novel Electrocatalyst For Alkaline Membrane Water Electrolysismentioning

confidence: 99%

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Novel Electrocatalyst for Alkaline Membrane Water Electrolysis

Mandal

2020

ChemElectroChem

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The production of H2 has aroused considerable attention worldwide as a renewable and sustainable energy source for domestic, industrial, and automotive purposes. Currently, about 95 % of H2 is produced from the steam reforming of methane. However, this process leads to the burning of fossil fuels and emits greenhouse gases into the atmosphere. Water electrolysis is an effective strategy to produce H2 in high purity. Alkaline anion exchange membrane water electrolysis (AAEMWE) is preferred to proton exchange membrane water electrolysis (PEMWE) because of the flexibility to be able to use cheaper membranes as separators and non‐noble electrocatalysts. However, the sluggish oxygen evolution reaction (OER) kinetics in AAEMWE is a bottleneck for water splitting efficiency and decreases the overall performances. Now, a novel nickel and iron graphene‐nanoplatelets‐supported metal‐organic framework‐based electrocatalyst has been developed that shows excellent durability and record‐high current density for alkaline electrolysis that outperforms the state‐of‐the‐art OER electrocatalysts.

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Green Hydrogen Generation by Water Electrolysis

Zhang,

Shi,

et al. 2024

Towards Green Hydrogen Generation

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Highly quaternized polystyrene ionomers for high performance anion exchange membrane water electrolysers

Cited by 513 publications

References 53 publications

Overview: State-of-the Art Commercial Membranes for Anion Exchange Membrane Water Electrolysis

Overview: State-of-the Art Commercial Membranes for Anion Exchange Membrane Water Electrolysis

Novel Electrocatalyst for Alkaline Membrane Water Electrolysis

Green Hydrogen Generation by Water Electrolysis

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