% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Khaneft:826230, author = {Khaneft, Marina and Holderer, Olaf and Ivanova, Oxana and Lüke, Wiebke and Kentzinger, Emmanuel and Appavou, Marie-Sousai and Zorn, Reiner and Lehnert, Werner}, title = {{S}tructure and {P}roton {D}ynamics in {C}atalytic {L}ayer of {HT}-{PEFC}}, journal = {Fuel cells}, volume = {16}, number = {4}, issn = {1615-6846}, address = {Weinheim}, publisher = {Wiley-VCH}, reportid = {FZJ-2017-00476}, pages = {406-413}, year = {2016}, abstract = {The present study focuses on structural and dynamical properties of the catalytic layer for high-temperature polymer electrolyte fuel cells (HT-PEFC). The catalytic layer is a composite material containing nanoporous carbon, poly(tetrafluoroethylene) (PTFE) and platinum (Pt) nanoparticles. The structure of the catalyst is investigated using small angle X-ray scattering (SAXS) following different preparation steps of the electrodes: pure carbon support, platinum/carbon (Pt/C) powder and finally, complete catalytic layer. The structural properties of the Pt/C powder containing different amounts of Pt are discussed along with the size distribution of Pt particles and their arrangement on the surface of the carbon support. Following the preparation sequence of the catalytic layer based on the Pt/C powders the electrodes with different final Pt loadings are analyzed in details. Investigation of the structure of the catalytic layer is accompanied by the study of nanosecond dynamics of the phosphoric acid (PA) in the catalytic layer containing different amount of Pt by means of neutron backscattering spectroscopy. The structure of the catalytic layer is mostly determined by the structure of the catalytic powder and does not vary significantly with Pt loading in the electrode. The behavior of the PA is sensitive to the Pt content in the electrode.}, cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 / IEK-3 / PGI-4}, ddc = {620}, cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)IEK-3-20101013 / I:(DE-Juel1)PGI-4-20110106}, pnm = {135 - Fuel Cells (POF3-135) / 144 - Controlling Collective States (POF3-144) / 6213 - Materials and Processes for Energy and Transport Technologies (POF3-621) / 6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)}, pid = {G:(DE-HGF)POF3-135 / G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-6213 / G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4}, experiment = {EXP:(DE-MLZ)SPHERES-20140101}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000382557300002}, doi = {10.1002/fuce.201500167}, url = {https://juser.fz-juelich.de/record/826230}, }