This title appears in the Scientific Report : 2001 

Tubular high-temperature proton conductors : transport numbers and hydrogen injection
Schober, T.
Elektrokeramische Materialien; IFF-EKM
Solid state ionics, 139 (2001) S. 95 - 104
Amsterdam [u.a.] Elsevier Science 2001
95 - 104
10.1016/S0167-2738(00)00822-5
Journal Article
Festkörperforschung für die Informationstechnik
Solid State Ionics 139
J
Please use the identifier: http://dx.doi.org/10.1016/S0167-2738(00)00822-5 in citations.
Tubes of high-temperature proton conductors [Sr(Zr0.8Ce0.2)(0.8)In0.2O3-x, BaZr0.9Y0.1O3-x and CaZr0.9In0.1O3-x] were investigated in various gas atmospheres. Transport numbers for selected species were measured and compared with literature values. The electrochemical injection of hydrogen into inert gases was demonstrated. By increasing the proton current, titration curves were obtained analogous to those for strong acid-strong base titrations. The modelling of such curves is presented. Fuel cell operation and steam electrolysis was also demonstrated. Exposure of one side of the tubes to ethanol vapor was found to lead to proton pick-up of the tubes. More drastic effects were observed with acetone vapor, which also produced proton pick-up but also the deposition of undesirable carbonaceous layers. (C) 2001 Elsevier Science B.V. All rights reserved.