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dc.contributor.authorZeng, J.
dc.contributor.authorJin, B.
dc.contributor.authorShen, P.
dc.contributor.authorHe, B.
dc.contributor.authorLamb, K.
dc.contributor.authorDe Marco, Roland
dc.contributor.authorJiang, San Ping
dc.date.accessioned2017-01-30T15:09:19Z
dc.date.available2017-01-30T15:09:19Z
dc.date.created2013-11-19T20:00:41Z
dc.date.issued2013
dc.identifier.citationZeng, Jie and Jin, Benqin and Shen, Pei Kang and He, Beibei and Lamb, Krystina and De Marco, Roland and Jiang, San Ping. 2013. Stack performance of phosphotungstic acid functionalized mesoporous silica (HPW-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells. International Journal of Hydrogen Energy. 38 (29): pp. 12830-12837.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/43703
dc.identifier.doi10.1016/j.ijhydene.2013.07.108
dc.description.abstract

In this paper, a series of short stacks with 2-cell, 6-cell and 10-cell employing phosphotungstic acid functionalized mesoporous silica (HPW-meso-silica) nanocomposite proton exchange membranes (PEMs) have been successfully fabricated, assembled and tested from room temperature to 200 °C. The effective surface area of the membrane was 20 cm2 and fabricated by a modified hot-pressing method. With the 2-cell stack, the open circuit voltage was 1.94 V and it was 5.01 V for the 6-cell stack, indicating a low gas permeability of the HPW-meso-silica membranes. With the 10-cell stack, a maximum power density of 74.4 W (equivalent to 372.1 mW cm−2) occurs at 150 °C in H2/O2, and the stack produces a near-constant power output of 31.6 W in H2/air at 150 °C without external humidification for 50 h. The short stack also displays good performance and stability during startup and shutdown cycling testing for 8 days at 150 °C in H2/air. Although the stack test period may be too short to extract definitive conclusions, the results are very promising, demonstrating the feasibility of the new inorganic HPW-meso-silica nanocomposites as PEMs for fuel cell stacks operating at elevated temperatures in the absence of external humidification.

dc.publisherElsevier Ltd
dc.subjectstack performance
dc.subjectphosphotungstic acid functionalized mesoporous silica
dc.subjecthigh temperature PEM
dc.subjectproton exchange membrane fuel cells
dc.subjectstartup and shut-down
dc.titleStack performance of phosphotungstic acid functionalized mesoporous silica (HPW-mesosilica) nanocomposite high temperature proton exchange membrane fuel cells
dc.typeJournal Article
dcterms.source.volume38
dcterms.source.startPage12830
dcterms.source.endPage12837
dcterms.source.issn0360-3199
dcterms.source.titleInternational Journal of Hydrogen Energy
curtin.department
curtin.accessStatusFulltext not available


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