Electron beam patterned Nafion membranes for DMFC applications

Omosebi, Ayokunle; Besser, R.S.

doi:10.1016/j.jpowsour.2012.11.076

Cited by 53 publications

(30 citation statements)

References 13 publications

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“…FTIR spectroscopy (Figure b) shows chemical species preservation after the plasma treatment. This result is in agreement with previous data from the authors and from Cho et al that the etching procedure did not alter the chemical character of the membrane. SEM imaging (Figure a, b) shows minimal surface texture for the pristine Nafion, whereas a grass‐like structure can be seen in the plasma etched Nafion.…”

Section: Resultssupporting

confidence: 94%

Ultra‐low Mass Sputtered and Conventional Catalyst Layers on Plasma‐etched Nafion for PEMFC Applications

Omosebi

Besser

2017

Fuel Cells

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This paper presents performance results for the use of plasma‐etched Nafion membranes to suppress polarization losses in proton exchange membrane fuel cells (PEMFCs) configured from 0.1 mg cm−2 conventional Pt/C dispersion and 0.02 mg cm−2 ultra‐thin sputter‐deposited Pt catalyst layers. Four MEA configurations, namely, etched membrane‐conventional electrode, pristine membrane‐conventional electrode, etched membrane‐sputter electrode, and pristine membrane‐sputter electrode cells were explored, and their respective maximum power densities were ∼514.6, 417.9, 170.1 and 138.3 mW cm−2. The results demonstrated that independent of MEA fabrication approach, cells with O2 plasma treated membranes had reduced ohmic resistances and delivered superior performance over their pristine counterparts, validating the utility of membrane etching for achieving improved PEMFC performance.

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Section: Resultssupporting

confidence: 94%

Ultra‐low Mass Sputtered and Conventional Catalyst Layers on Plasma‐etched Nafion for PEMFC Applications

Omosebi

Besser

2017

Fuel Cells

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“…This perfluorosulfonatedbased polymer is assembled by DuPont and has been explored for the development of optical [18] and electrochemical [21] sensors as well as in fuel cell technology [22,23], as it is a proton exchanger due to its sulfonate groups. Conceptually, its molecular structure is formed by a hydrophobic backbone with chains containing sulfonate end groups that bring hydrophilicity to the polymer.…”

Section: Introductionmentioning

confidence: 99%

Analysis of immersed silica optical microfiber knot resonator and its application as a moisture sensor

et al. 2014

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An embedded silica optical microfiber knot resonator humidity sensor is presented. As silica has a poor response to environmental humidity changes, a surrounding layer of Nafion is used as a transducer. Spectral characterization and also a procedure to determine the coupling and total loss coefficients are presented. Sensitivity as high as (0.29±0.01) nm/% relative humidity has been noticed. Possible issues that emerge from the use of Nafion such as bulk swelling, refractive index hysteresis, as well as a saturation process, are discussed.

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“…To optimize the interfacial structure, several groups [21][22][23][24][25][26][27]have reported the rough and patterned surface of Nafion ® membrane can enlarge interfacial area between the electrolyte membrane and catalyst layer, and the performance of single cell was improved. However, these efforts ignored the effect of Nafion ® membrane surface structure on the catalyst layer structure, and "catalytic dead zone".…”

Section: Accepted Manuscriptmentioning

confidence: 99%

A novel catalyst layer structure based surface-patterned Nafion® membrane for high-performance direct methanol fuel cell

Chen

Wang

Zhou

et al. 2018

Electrochimica Acta

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Electron beam patterned Nafion membranes for DMFC applications

Cited by 53 publications

References 13 publications

Ultra‐low Mass Sputtered and Conventional Catalyst Layers on Plasma‐etched Nafion for PEMFC Applications

Ultra‐low Mass Sputtered and Conventional Catalyst Layers on Plasma‐etched Nafion for PEMFC Applications

Analysis of immersed silica optical microfiber knot resonator and its application as a moisture sensor

A novel catalyst layer structure based surface-patterned Nafion® membrane for high-performance direct methanol fuel cell

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