000029710 001__ 29710
000029710 005__ 20131002114010.0
000029710 0248_ $$aoai:doc.rero.ch:20120831104723-CZ$$punifr$$ppostprint$$prero_explore$$zcdu34$$zthesis_urn$$zreport$$zthesis$$zbook$$zcdu54$$zjournal$$zcdu16$$zpreprint$$zcdu1$$zdissertation
000029710 041__ $$aeng
000029710 080__ $$a54
000029710 100__ $$aStojadinović, J.$$uEMPA, Materials Science and Technology, Hydrogen & Energy, Dübendorf, Switzerland
000029710 245__ $$9eng$$aElectrochemical characterization of porous diaphragms in development for gas separation
000029710 269__ $$c2012-08-24
000029710 520__ $$9eng$$aThe alkaline electrolyzer industry is facing the imminent necessity of replacing the asbestos diaphragms with a separator made of a new environmentally friendly material. The influence of a diaphragm's material and porosity on the ionic conductivity was studied for asbestos, zirconium dioxide, wollastonite and olivine diaphragms. Developed electrochemical impedance spectroscopy (EIS) set-up with four-electrode cell offers the possibility for an accurate measurement of diaphragms’ ionic conductivity and enables its correlation to the materials porosity and tortuosity. The ion conductivity of investigated diaphragms approaches zero value for total porosities below 20% and increases when increasing porosities in agreement with Archie's law.
000029710 700__ $$aWiedenmann, Daniel$$uEMPA, Materials Science and Technology, Hydrogen & Energy, Dübendorf, Switzerland - University of Fribourg, Department Geosciences and FRIMAT, Fribourg, Switzerland
000029710 700__ $$aGorbar, M.$$uEMPA, Materials Science and Technology, Hydrogen & Energy, Dübendorf, Switzerland
000029710 700__ $$aMantia, F. La$$uUniversity of Bochum, Department Chemistry and Biochemistry, Germany
000029710 700__ $$aSuarez, L.$$uEMPA, Materials Science and Technology, Hydrogen & Energy, Dübendorf, Switzerland
000029710 700__ $$aHerzog, V. Zakaznova$$uEMPA, Materials Science and Technology, Hydrogen & Energy, Dübendorf, Switzerland
000029710 700__ $$aVogt, U. F.$$uEMPA, Materials Science and Technology, Hydrogen & Energy, Dübendorf, Switzerland
000029710 700__ $$aGrobéty, Bernard$$uUniversity of Fribourg, Department Geosciences and FRIMAT, Fribourg, Switzerland
000029710 700__ $$aZüttel, Andreas$$uEMPA, Materials Science and Technology, Hydrogen & Energy, Dübendorf, Switzerland
000029710 773__ $$g2012/1/4/F25-F28$$tECS Electrochemistry Letters
000029710 775__ $$gPublished version$$ohttp://dx.doi.org/10.1149/2.002204eel
000029710 8564_ $$fgrob_ecp.pdf$$qapplication/pdf$$s176352$$uhttp://doc.rero.ch/record/29710/files/grob_ecp.pdf$$yorder:1$$zpdf
000029710 918__ $$aFaculté des sciences$$bDécanat, Ch. du Musée 6A, 1700 Fribourg$$cGéosciences
000029710 919__ $$aUniversité de Fribourg$$bFribourg$$ddoc.support@rero.ch
000029710 980__ $$aPOSTPRINT$$bUNIFR$$fART_JOURNAL
000029710 990__ $$a20120831104723-CZ