Characteristic Study of Bio-Membrane PEM Fuel Cell for Performance Upgrading

Alshorman, Abdullah A.

doi:10.1016/j.procs.2016.04.174

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…The channel shape and size depend on factors such as mass of ions, fluence of ions, linear energy transfer, and etching conditions such as time and temperature . After the irradiation followed by the etching process, different physical as well as chemical changes occur in the polymer film, such as bond breaking, new bond formation, e.g., double-bond formation, some byproduct formation along with the creation of ionic species or free-radical active sites, which are eventually responsible for grafting, followed by functionalization to induct ionic species. ,, High proton conductivity, low fuel crossover, and sufficient water uptake with better thermal and mechanical properties along with cost and durability are the essential parameters for an efficient fuel cell membrane . Ionomer Nafion 117 is the commercial membrane that is developed by DuPont Inc., having disadvantages such as high fuel crossover and poor thermal and ion conduction at high temperatures. , …”

Section: Introductionmentioning

confidence: 99%

“…3,27,28 High proton conductivity, low fuel crossover, and sufficient water uptake with better thermal and mechanical properties along with cost and durability are the essential parameters for an efficient fuel cell membrane. 29 Ionomer Nafion 117 is the commercial membrane that is developed by DuPont Inc., 30 having disadvantages such as high fuel crossover and poor thermal and ion conduction at high temperatures. 31,32 Fluoropolymers such as poly(vinylidene fluoride) (PVDF) and its copolymers show excellent properties such as thermal and mechanical stability and durability along with their nonreactive and insulating behavior, 33,34 which make them suitable ionic membranes for the above applications.…”

Section: ■ Introductionmentioning

confidence: 99%

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Fabrication of Conducting Nanochannels Using Accelerator for Fuel Cell Membrane and Removal of Radionuclides: Role of Nanoparticles

Prakash

Mhatre

Tripathi

et al. 2020

ACS Appl. Mater. Interfaces

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Latent tracks in pure polymer and its nanohybrid are fabricated by irradiating with swift heavy ions (SHI) (Ag+) having 140 MeV energy followed by selective chemical etching of the amorphous path, caused by the irradiation of SHI, to generate nanochannels of size ∼80 nm. Grafting is done within the nanochannels utilizing free radicals generated from the interaction of high-energy ions, followed by tagging of ionic species to make the nanochannels highly ion-conducting. The uniform dispersion of two-dimensional nanoparticles better controls the size and number density of the nanochannels and, thereby, converts them into an effective membrane. The nanoparticle and functionalization induce a piezoelectric β-phase in the membrane. The functionalized membrane removes the radioactive nuclide like 241Am+3 (α-emitting source) efficiently (∼80% or 0.35 μg/cm2) from its solution/waste. This membrane act as a corrosion inhibitor (92% inhibition efficiency) together with its higher proton conduction (0.13 S/m) ability. The higher ion-exchange capacity, water uptake, ion conduction, and high sorption by the nanohybrid membrane are explored with respect to the extent of functionalization and control over nanochannel dimension. A membrane electrode assembly has been fabricated to construct a complete fuel cell, which exhibits superior power generation (power density of 45 mW/cm2 at a current density of 298 mA/cm2) much higher than that of the standard Nafion, measured in a similar condition. Further, a piezoelectric matrix along with its anticorrosive property, high sorption characteristics, and greater power generation makes this class of material a smart membrane that can be used for many different applications.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Fabrication of Conducting Nanochannels Using Accelerator for Fuel Cell Membrane and Removal of Radionuclides: Role of Nanoparticles

Prakash

Mhatre

Tripathi

et al. 2020

ACS Appl. Mater. Interfaces

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“…In this respect, some modifications with graphene oxide have been made, but it was discovered that these hybrid membranes could not replace Nafion membranes completely [16]. Other studies have been proposed, with inorganic membranes and bio-membranes obtaining similar performances to the Nafion membrane [17,18].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Application of Agave salmiana Cuticle as Bio-membrane in Low-temperature Electrolyzer and Fuel Cells

Arredondo¹,

Aguilar-Lira

Pérez-Silva

et al. 2019

Applied Sciences

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This work describes the application of the Agave salmiana cuticle as a new protonic exchange biological membrane (0.080 ± 0.001 mm thickness). Different chemical, electrochemical and mechanical treatments were evaluated to stimulate the ionic exchange properties of the cuticle. Thermal treatment was adequate for its application in a two-chamber electrolyzer. Under optimal conditions an ionic conductivity value of 10 ± 3 mS cm−1 was obtained; this value is similar to the value achieved using a Nafion membrane. The thermally-activated bio-membrane was also evaluated in a fuel cell, where the highest potential was obtained using methanol and hydrogen (0.46 ± 0.01 V). This result makes the Agave salmiana cuticle a competitive choice to replace the commercial membrane. Its surface morphology and their functional groups were evaluated through scanning electron microscopy (SEM), infrared spectroscopy and impedance spectroscopy. This thermally-treated Agave salmiana cuticle is an ecofriendly alternative to replace Nafion membranes in electrolyzer and fuel cells.

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