Highly stable poly(ethylene glycol)-grafted alkaline anion exchange membranes

Yang, Chunxue; Wang, Suli; Ma, Wei; Zhao, Shixiong; Xu, Ziqi; Sun, Gongquan

doi:10.1039/c6ta00200e

Cited by 62 publications

(30 citation statements)

References 33 publications

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“…Overall the advantages of AEMFCs, the low anionic conductivity of AEMs compared to PEM is a concern, since it may lead to lower performance . So, AEMFC technology could be successful only when it overcomes the technical (high ionic conductivity with excellent physicochemical and thermo‐mechanical stability) and cost‐effective challenges .…”

Section: Introductionmentioning

confidence: 99%

Octa‐imidazolium POSS/quaternized polysulfone composite anion exchange membrane for alkaline fuel cell

Elumalai

Dharmalingam

2018

Polymer Composites

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In the present study, a series of new anion exchange composite membranes were fabricated from pre‐synthesized imidazolium grafted polyhedral oligomeric silsesquioxane (IM‐POSS) with quaternary polysulfone (QPSU). Synthesized IM‐POSS were acutely characterized by Fourier‐transform infrared, NMR, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) investigations to confirm the chemical structure and cubic morphologies. The IM‐POSS nanoparticles have binary function in the anion exchange membrane by providing more additional ion conducting groups (imidazolium) and by reinforcing the membrane in molecular level for overall improvement of composite membranes. The prepared composite membranes with various compositions of the IM‐POSS/QPSU were characterized by X‐ray diffraction, SEM, ion exchange capacity, water uptake (Wup), and conductivity to assure the appropriateness of their use as a solid alkaline electrolyte in anion exchange membrane fuel cell. The membrane electrode assembly was constructed using Pt anode (0.25 mg/cm2), Ag cathode (0.375 mg/cm2), and various IM‐POSS/QPSU composite membranes, which was tested in an in‐house built fuel cell setup. The membrane with 15% IM‐POSS showed the maximum power density of 309 mW/cm2. The results showed that the addition of IM‐POSS is a straight forward and effectual method to enhance the hydroxide conductivity without sacrificing other properties of the membrane. POLYM. COMPOS., 40:1536–1544, 2019. © 2018 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Octa‐imidazolium POSS/quaternized polysulfone composite anion exchange membrane for alkaline fuel cell

Elumalai

Dharmalingam

2018

Polymer Composites

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“…AEM development has focused on controlling the membrane morphology and functionalization with various cationic groups in an attempt to attain excellent thermal and mechanical properties along with improved hydroxide conductivity (≥0.1 S cm −1 ) [51]. Most of the developed AEMs were employed in fuel cell applications [25,26,30,32,35,40,[42][43][44][45]47], with only a few AEMs used in water electrolysis cell tests [21,50]. The AEMs used in fuel-cell applications can also be used in water electrolysis applications.…”

Section: Introductionmentioning

confidence: 99%

A Review on Membranes and Catalysts for Anion Exchange Membrane Water Electrolysis Single Cells

Cho

Lim

Lee

et al. 2017

J. Electrochem. Sci. Technol

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The research efforts directed at advancing water electrolysis technology continue to intensify together with the increasing interest in hydrogen as an alternative source of energy to fossil fuels. Among the various water electrolysis systems reported to date, systems employing a solid polymer electrolyte membrane are known to display both improved safety and efficiency as a result of enhanced separation of products: hydrogen and oxygen. Conducting water electrolysis in an alkaline medium lowers the system cost by allowing non-platinum group metals to be used as catalysts for the complex multi-electron transfer reactions involved in water electrolysis, namely the hydrogen and oxygen evolution reactions (HER and OER, respectively). We briefly review the anion exchange membranes (AEMs) and electrocatalysts developed and applied thus far in alkaline AEM water electrolysis (AEMWE) devices. Testing the developed components in AEMWE cells is a key step in maximizing the device performance since cell performance depends strongly on the structure of the electrodes containing the HER and OER catalysts and the polymer membrane under specific cell operating conditions. In this review, we discuss the properties of reported AEMs that have been used to fabricate membrane-electrode assemblies for AEMWE cells, including membranes based on polysulfone, poly(2,6-dimethyl-p-phylene) oxide, polybenzimidazole, and inorganic composite materials. The activities and stabilities of tertiary metal oxides, metal carbon composites, and ultra-low Pt-loading electrodes toward OER and HER in AEMWE cells are also described.

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“…In recent years, a variety of AEM materials based on poly(sulfone)s, 9,10 poly(arylene ether)s, 11 poly(phenylene oxide)s, [12][13][14] poly(styrene)s, 15,16 poly(olen)s, 17,18 and polybenzimidazoles 19,20 have been reported for developing high performance AEMs. In the majority of these reports, AEMs are prepared via chloromethylation or bromination, followed by the Menshutkin reaction with tertiary amine.…”

Section: Introductionmentioning

confidence: 99%

Side-chain-type anion exchange membranes bearing pendant quaternary ammonium groups via flexible spacers for fuel cells

et al. 2016

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Highly stable poly(ethylene glycol)-grafted alkaline anion exchange membranes

Abstract: PEG-grafted SEBS-based alkaline anion exchange membranes show excellent mechanical, thermal and chemical stability. The ion-conducting channels are enlarged by PEG-grafting, significantly enhancing the conductivity.

Cited by 62 publications

References 33 publications

Octa‐imidazolium POSS/quaternized polysulfone composite anion exchange membrane for alkaline fuel cell

Octa‐imidazolium POSS/quaternized polysulfone composite anion exchange membrane for alkaline fuel cell

A Review on Membranes and Catalysts for Anion Exchange Membrane Water Electrolysis Single Cells

Side-chain-type anion exchange membranes bearing pendant quaternary ammonium groups via flexible spacers for fuel cells

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