Enhancement of fuel cell performance with less-water dependent composite membranes having polyoxometalate anchored nanofibrous interlayer

Abouzari-Iotf, Ebrahim, Jacob, Mohan V., Ghassemi, Hossein, Ahmad, Arshad, Nasef, Mohamed Mahmoud, Zakeri, Masoumeh, and Mehdipour-Ataei, Shahram (2016) Enhancement of fuel cell performance with less-water dependent composite membranes having polyoxometalate anchored nanofibrous interlayer. Journal of Power Sources, 326. pp. 482-489.

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Abstract

Polyoxometalate immobilized nanofiber was used to fabricate low gas permeable layer for composite membranes designed for proton exchange membrane fuel cell (PEMFC) operating at low relative humidity (RH). The composite membranes revealed enhanced proton conductivity in dry conditions compared with state-of-the-art pristine membrane (Nafion 112, N112). This was coupled with a low fuel crossover inheriting the composite membranes about 100 mV higher OCV than N112 when tested in PEMFC at 60 degrees C and 40% RH. A maximum power density of up to 930 mW cm(-2) was also achieved which is substantially higher than the N112 under similar conditions (577 mW cm(-2)). Such remarkable performance enhancement along with undetectable leaching of immobilized polyoxometalate, high dimensional stability and low water uptake of the composite membranes suggest a strong potential for PEMFC under low RH operation.

Item ID: 45936
Item Type: Article (Research - C1)
ISSN: 1873-2755
Keywords: polymer electrolyte membrane fuel cells, conductive nanofibrous membrane, polyoxometalate, membrane electrode assembly, high energy density
Funders: Universiti Teknologi Malaysia (UTM), Malaysian Ministry of Higher Education (MMHE), Innovative Research Universities of Australia and Malaysia Research University Network (IRU-MRUN)
Projects and Grants: UTM #00D20, MMHE #4L817, IRU-MRUN #00M84
Date Deposited: 05 Oct 2016 07:35
FoR Codes: 09 ENGINEERING > 0904 Chemical Engineering > 090404 Membrane and Separation Technologies @ 50%
03 CHEMICAL SCIENCES > 0303 Macromolecular and Materials Chemistry > 030302 Nanochemistry and Supramolecular Chemistry @ 50%
SEO Codes: 85 ENERGY > 8507 Energy Conservation and Efficiency > 850799 Energy Conservation and Efficiency not elsewhere classified @ 50%
97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 50%
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