Enhancement of proton exchange membrane fuel cell performance by doping microporous layers of gas diffusion layers with multiwall carbon nanotubes

Schweiss, Ruediger; Steeb, Marcus; Wilde, Peter; Schubert, Tim

doi:10.1016/j.jpowsour.2012.07.078

Cited by 62 publications

(45 citation statements)

References 40 publications

(28 reference statements)

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“…The substrate is generally treated with polytetrafluoroethylene (PTFE) to impart hydrophobicity to the fiber surfaces, discouraging liquid water condensation and accumulation. The MPL has become a common addition to modern GDLs due to its desirable effects on CL-GDL contact, membrane hydration and liquid water management [5][6][7][8][9][10]. Generally, the MPL is composed of carbon black nanoparticles and PTFE, and has pore sizes in the range of 10-100 nm.…”

Section: List Of Tablesmentioning

confidence: 99%

Liquid water saturation and oxygen transport resistance in polymer electrolyte membrane fuel cell gas diffusion layers

Muirhead

Banerjee

George

et al. 2018

Electrochimica Acta

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In this thesis, the relative humidity (RH) of the cathode reactant gas was investigated as a factor which influences gas diffusion layer (GDL) liquid water accumulation and mass transport-related efficiency losses over a range of operating current densities in a polymer electrolyte membrane (PEM) fuel cell. Limiting current measurements were used to characterize fuel cell oxygen transport resistance while simultaneous measurements of liquid water accumulation were conducted using synchrotron X-ray radiography. GDL porosity distributions were characterized with micro-computed tomography (μCT). The work presented here can be used by researchers to develop improved numerical models to predict GDL liquid water accumulation and to inform the design of next-generation GDL materials to mitigate mass transport-related efficiency losses. This work also contributes an extensive set of concurrent performance and liquid water visualization data to the PEM fuel cell field that can be used for validating multiphase transport models.iii

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Section: List Of Tablesmentioning

confidence: 99%

Liquid water saturation and oxygen transport resistance in polymer electrolyte membrane fuel cell gas diffusion layers

Muirhead

Banerjee

George

et al. 2018

Electrochimica Acta

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“…Their results show that the cathode potential can be improved significantly by the employment of CNTs as MPL material. Schweiss et al [8] modified the MPL by doping multiwall CNTs using a wet-chemical approach. They found that the electronic resistance of GDL was reduced significantly and accordingly the PEMFC performance was improved by using such CNT-doped GDLs.…”

Section: Introductionmentioning

confidence: 99%

Effect of microporous layer composed of carbon nanotube and acetylene black on polymer electrolyte membrane fuel cell performance

Lin

Chang

2015

International Journal of Hydrogen Energy

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“…The addition of MPL can decrease the contact resistance and provide a better mechanical compatibility between the GDL and the catalyst layer. 4 Moreover, many studies demonstrate that the MPL is of great importance in keeping balance between water formation and water removal which signicantly affects the fuel cell performance and durability. [5][6][7][8][9][10] Much work in the literature has thus paid attention to optimize the content of PTFE in MPL 11 and pore structure of MPL with various types of carbon materials to improve the performance of PEMFC.…”

Section: Introductionmentioning

confidence: 99%

“…[5][6][7][8][9][10] Much work in the literature has thus paid attention to optimize the content of PTFE in MPL 11 and pore structure of MPL with various types of carbon materials to improve the performance of PEMFC. 4,12,13 Besides, enough hydrophobicity is needed to achieve the desirable functions of GDL stated above.…”

Section: Introductionmentioning

confidence: 99%

Study on hydrophobicity loss of the gas diffusion layer in PEMFCs by electrochemical oxidation

Sheng

Liu

et al. 2014

RSC Adv.

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aThe hydrophobicity loss of the gas diffusion layer (GDL) in proton exchange membrane fuel cells (PEMFCs) was investigated by an accelerated stress test of electrochemical oxidation at a constant potential. The fresh and oxidized GDLs were characterized by cyclic voltammetry, contact angle measurements and water permeability. Results showed the occurrence of the oxidation of carbon and the decrease of the hydrophobicity of GDL. To discuss the reasons for the hydrophobicity loss, scanning electron microscopy, X-ray photoelectron spectroscopy and thermogravimetry were analyzed. It was found that the hydrophobicity loss was closely associated with the losses of the carbon materials and polytetrafluoroethylene (PTFE) in GDL under test conditions. In addition, the mass loss of carbon materials was more than that of PTFE.

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Enhancement of proton exchange membrane fuel cell performance by doping microporous layers of gas diffusion layers with multiwall carbon nanotubes

Cited by 62 publications

References 40 publications

Liquid water saturation and oxygen transport resistance in polymer electrolyte membrane fuel cell gas diffusion layers

Liquid water saturation and oxygen transport resistance in polymer electrolyte membrane fuel cell gas diffusion layers

Effect of microporous layer composed of carbon nanotube and acetylene black on polymer electrolyte membrane fuel cell performance

Study on hydrophobicity loss of the gas diffusion layer in PEMFCs by electrochemical oxidation

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