Growth and use of Carbon Nanotube Nanoforests as Gas Diffusion Layers in Industrial-Scale Proton Exchange Membrane Fuel Cells

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dc.contributor.authorHu, Kathryn M.
dc.contributor.departmentMechanical Engineering
dc.date.accessioned2019-05-28T20:11:14Z
dc.date.available2019-05-28T20:11:14Z
dc.date.issued2017-05
dc.description.abstractProton exchange membrane fuel cells are promising sources of electrical energy for stationary generation, transportation, portable and backup power. The performance is greatly impacted by a variety of factors including cell temperature, gas flow rates, reactant humidification, and water management. Water management is especially challenging involving a fine balance between adequate humidification for conductivity and flooding due to excess water. Gas diffusion layers are a component within the fuel cell designed for the functions of permeability, electrical conductivity, mechanical strength, and water management. For this research, the production and use of carbon nanotube nanoforests for gas diffusion layers was investigated due to the carbon nanotubes’ inherent high electrical conductivity, permeability, and hydrophobicity. The nanoforest was used independently and paired with carbon paper and ceramic substrates. Although none of the developed diffusion layers performed better than the baseline, unexpected behaviors were observed and the path for future research is better defined.
dc.identifier.urihttp://hdl.handle.net/10125/62528
dc.languageeng
dc.publisherUniversity of Hawaii at Manoa
dc.subjectnanotechnology
dc.subjectPEM fuel cells
dc.subjectCarbon nanotubes
dc.subjectgas diffusion layer
dc.titleGrowth and use of Carbon Nanotube Nanoforests as Gas Diffusion Layers in Industrial-Scale Proton Exchange Membrane Fuel Cells
dc.typeThesis
dc.type.dcmiText
dcterms.descriptionM.S. Thesis. University of Hawaiʻi at Mānoa 2017.

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