Sökning: WFRF:(Wickman Marie) > Nanometer-thick fil...
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000 | 03690naa a2200457 4500 | |
001 | oai:research.chalmers.se:6b3a108f-b159-40a6-9887-c271fe8c9dab | |
003 | SwePub | |
008 | 171007s2007 | |||||||||||000 ||eng| | |
009 | oai:DiVA.org:kth-7243 | |
024 | 7 | a https://research.chalmers.se/publication/616882 URI |
024 | 7 | a https://doi.org/10.1016/j.electacta.2006.12.0022 DOI |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-72432 URI |
040 | a (SwePub)cthd (SwePub)kth | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a art2 swepub-publicationtype |
072 | 7 | a ref2 swepub-contenttype |
100 | 1 | a Ekström, Henriku KTH,Tillämpad elektrokemi4 aut0 (Swepub:kth)u101temd |
245 | 1 0 | a Nanometer-thick films of titanium oxide acting as electrolyte in the polymer electrolyte fuel cell |
264 | 1 | b Elsevier BV,c 2007 |
500 | a QC 20100706 | |
520 | a 0–18 nm-thick titanium, zirconium and tantalum oxide films are thermally evaporated on Nafion 117 membranes, and used as thin spacer electrolyte layers between the Nafion and a 3 nm Pt catalyst film. Electrochemical characterisation of the films in terms of oxygen reduction activity, high frequency impedance and cyclic voltammetry in nitrogen is performed in a fuel cell at 80 ◦C and full humidification. Titanium oxide films with thicknesses up to 18 nm are shown to conduct protons, whereas zirconium oxide and tantalum oxide block proton transport already at a thickness of 1.5 nm. The performance for oxygen reduction is higher for a bi-layered film of 3 nm platinum on 1.5 or 18 nm titanium oxide, than for a pure 3 nm platinum film with no spacer layer. The improvement in oxygen reduction performance is ascribed to a higher active surface area of platinum, i.e. no beneficial effect of combining platinum with zirconium, tantalum or titanium oxides on the intrinsic oxygen reduction activityis seen. The results suggest that TiO2 may be used as electrolyte in fuel cell electrodes, and that low-temperature proton exchange fuel cells could be possible using TiO2 as electrolyte. | |
650 | 7 | a NATURVETENSKAPx Kemix Oorganisk kemi0 (SwePub)104042 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Chemical Sciencesx Inorganic Chemistry0 (SwePub)104042 hsv//eng |
653 | a Oxygen reduction | |
653 | a Titanium oxide | |
653 | a Proton conduction | |
653 | a Fuel cell | |
653 | a Thermal evaporation | |
653 | a Electrochemistry | |
700 | 1 | a Wickman, Björn,d 1980u Chalmers tekniska högskola,Chalmers University of Technology,Chalmers tekniska högskola, Göteborg4 aut0 (Swepub:cth)k01wibj |
700 | 1 | a Gustavsson, Marie,d 1969u Chalmers tekniska högskola,Chalmers University of Technology,Chalmers tekniska högskola, Göteborg4 aut |
700 | 1 | a Hanarp, Per,d 1974u Chalmers tekniska högskola,Chalmers University of Technology,Chalmers tekniska högskola, Göteborg4 aut0 (Swepub:cth)hanarp |
700 | 1 | a Eurenius, Lisa,d 1977u Chalmers tekniska högskola,Chalmers University of Technology,Chalmers tekniska högskola, Göteborg4 aut0 (Swepub:cth)eurenius |
700 | 1 | a Olsson, Eva,d 1960u Chalmers tekniska högskola,Chalmers University of Technology,Chalmers tekniska högskola, Göteborg4 aut0 (Swepub:cth)f10eva |
700 | 1 | a Lindbergh, Göranu KTH,Tillämpad elektrokemi4 aut0 (Swepub:kth)u13qsu09 |
710 | 2 | a KTHb Tillämpad elektrokemi4 org |
773 | 0 | t Electrochimica Actad : Elsevier BVg 52:12, s. 4239-4245q 52:12<4239-4245x 0013-4686x 1873-3859 |
856 | 4 8 | u https://research.chalmers.se/publication/61688 |
856 | 4 8 | u https://doi.org/10.1016/j.electacta.2006.12.002 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-7243 |
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