期刊
JOURNAL OF POWER SOURCES
卷 326, 期 -, 页码 482-489出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2016.07.027
关键词
Polymer electrolyte membrane fuel cells; Conductive nanofibrous membrane; Polyoxometalate; Membrane electrode assembly; High energy density
资金
- Malaysian Ministry of Higher Education under the LRGS program [4L817]
- Universiti Teknologi Malaysia [00D20]
- joint partnership research program of Innovative Research Universities of Austral-iaand Malaysia Research University Network (IRU-MRUN) [00M84]
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. (C) 2016 Elsevier B.V. All rights reserved.
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