Polymer‐Säure‐Komposite auf Basis strahlungsinduzierter Pfropfpolymerisation für Hochtemperatur‐PEM‐Brennstoffzellen

Schmidt‐Naake, Gudrun

doi:10.1002/cite.200900003

Cited by 5 publications

(6 citation statements)

References 16 publications

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“…The grafted films were exposed to concentrated phosphoric acid (85 wt.-%) at 110 °C for 30 min. Then, the surface was dried with tissue paper [52][53][54].…”

Section: Membrane Doping With Phosphoric Acidmentioning

confidence: 99%

“…The grafting procedure was adopted from references [52][53][54]. The irradiated ETFE films were put into a double-walled glass reactor (100 mL volume) equipped with a condenser and a gas inlet allowing for purging with nitrogen to remove oxygen and mixing of the reaction mixture.…”

Section: Membrane Grafting Proceduresmentioning

confidence: 99%

“…In addition, glycidyl methacrylate and butyl acrylate were grafted to ETFE and subsequently the epoxy group was aminated. Some of the systems were tested in fuel cells and proved the concept that PA is an effective proton conductor [52,53].…”

Section: Introductionmentioning

confidence: 98%

“…As an example, poly(ethylene-alt-tetrafluoroethylene) (ETFE) was used [8,[52][53][54][55][56][57][58][59]. Generally, the polymer backbone material was irradiated and subsequently grafted with basic monomer(s), since it was anticipated that the affinity to PA scales with basicity.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Novel concept of polymer electrolyte membranes for high-temperature fuel cells based on ETFE grafted with neutral acrylic monomers

Drache

Gohs

et al. 2015

Journal of Membrane Science

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“…The grafted films were exposed to concentrated phosphoric acid (85 wt.-%) at 110 °C for 30 min. Then, the surface was dried with tissue paper [52][53][54].…”

Section: Membrane Doping With Phosphoric Acidmentioning

confidence: 99%

Section: Membrane Grafting Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Novel concept of polymer electrolyte membranes for high-temperature fuel cells based on ETFE grafted with neutral acrylic monomers

Drache

Gohs

et al. 2015

Journal of Membrane Science

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“…In analogy to previous reports [40,46,47,48,49] the graft copolymerization was carried out in a 100 mL double walled glass reactor equipped with a condenser and a gas inlet to allow for purging with nitrogen to remove oxygen from the reaction mixture. Additionally, the content of the reactor is mixed by the gas flow.…”

Section: Methodsmentioning

confidence: 99%

Preparation of Polymer Electrolyte Membranes via Radiation-Induced Graft Copolymerization on Poly(ethylene-alt-tetrafluoroethylene) (ETFE) Using the Crosslinker N,N′-Methylenebis(acrylamide)

Drache

Gohs

et al. 2018

Membranes

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Polymer electrolyte membranes (PEM) prepared by radiation-induced graft copolymerization are investigated. For this purpose, commercial poly(ethylene-alt-tetrafluoroethylene) (ETFE) films were activated by electron beam treatment and subsequently grafted with the monomers glycidyl methacrylate (GMA), hydroxyethyl methacrylate (HEMA) and N,N′-methylenebis(acrylamide) (MBAA) as crosslinker. The target is to achieve a high degree of grafting (DG) and high proton conductivity. To evaluate the electrochemical performance, the PEMs were tested in a fuel cell and in a vanadium redox-flow battery (VRFB). High power densities of 134 mW∙cm−2 and 474 mW∙cm−2 were observed, respectively.

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Polymer Design Strategies for Radiation‐Grafted Fuel Cell Membranes

Gubler

2013

Advanced Energy Materials

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In the past decade, fuel cell technology has been moving steadily towards commercialization, with prospects of high production volumes, in particular in electric vehicle applications. However, the cost and durability of the currently‐used materials and components fall short of the requirements for large‐scale industrialization. The development of alternative, more cost‐effective materials with competitive performance and durability attributes is therefore ongoing. Radiation‐induced graft copolymerization (“radiation grafting”) is a versatile method to modify pre‐existing polymers to introduce a variety of desired functionalities, such as ion‐exchange capacity. Here, an overview of fundamentals and recent developments in the area of radiation grafted ion‐conducting polymers for application in polymer electrolyte fuel cells (PEFCs) is provided. Key aspects of polymer design are discussed, taking into consideration the radiation chemistry of base polymer materials and the adequate choice of grafting monomers for different PEFC types. Furthermore, the current status of applications in fuel cells is highlighted.

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Polymer‐Säure‐Komposite auf Basis strahlungsinduzierter Pfropfpolymerisation für Hochtemperatur‐PEM‐Brennstoffzellen

Cited by 5 publications

References 16 publications

Novel concept of polymer electrolyte membranes for high-temperature fuel cells based on ETFE grafted with neutral acrylic monomers

Novel concept of polymer electrolyte membranes for high-temperature fuel cells based on ETFE grafted with neutral acrylic monomers

Preparation of Polymer Electrolyte Membranes via Radiation-Induced Graft Copolymerization on Poly(ethylene-alt-tetrafluoroethylene) (ETFE) Using the Crosslinker N,N′-Methylenebis(acrylamide)

Polymer Design Strategies for Radiation‐Grafted Fuel Cell Membranes

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