Hydrogen diffusion mechanism in proton conducting oxides

✍ Scribed by R. Hempelmann

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 357 KB
• Volume: 226
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(96)00251-7

✦ Synopsis

By means of quasielastic neutron scattering on Yb-doped SrCeO 3 we have studied the atomistic proton diffusion mechanism in proton conducting perovskites simultaneously in space and time. Proton diffusion consists of a sequence of trapping and free diffusion events. The free diffusion corresponds to the Grotthus mechanism including very fast rotations around oxygen ions.