Hydrogen diffusion mechanism in proton conducting oxides

被引：70

作者：

Hempelmann, R

机构：

[1] Physikalische Chemie, Universität des Saarlandes, D-66123 Saarbrücken

来源：

PHYSICA B | 1996年 / 226卷 / 1-3期

关键词：

D O I：

10.1016/0921-4526(96)00251-7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

By means of quasielastic neutron scattering on Yb-doped SrCeO3 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.

引用

收藏

页码：72 / 77

页数：6

相关论文

共 14 条

[1] THE DESIGN OF THE IRIS INELASTIC NEUTRON SPECTROMETER AND IMPROVEMENTS TO ITS ANALYZERS [J].

CARLILE, CJ ;

ADAMS, MA .

PHYSICA B, 1992, 182 (04) :431-440

[2]

CHANDRA S, 1989, SUPERIONIC SOLIDS

[3] NEUTRON SCATTERING FROM A LIQUID ON A JUMP DIFFUSION MODEL [J].

CHUDLEY, CT ;

ELLIOTT, RJ .

PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON, 1961, 77 (494) :353-&

[4]

Colomban P., 1992, PROTON CONDUCTORS

[5]

GROTTHUS CJD, 1806, ANN CHIM PHYS, V58, P54

[6]

*HAHN MEITN I, 1994, INSTR UPGR RES REACT

[7] QUASI-ELASTIC NEUTRON-SCATTERING STUDY OF PROTON DIFFUSION IN SRCE0.95YB0.05H0.02O2.985 [J].

HEMPELMANN, R ;

KARMONIK, C ;

MATZKE, T ;

CAPPADONIA, M ;

STIMMING, U ;

SPRINGER, T ;

ADAMS, MA .

SOLID STATE IONICS, 1995, 77 :152-156

[8] HIGH-TEMPERATURE PROTON CONDUCTING OXIDES AND THEIR APPLICATIONS TO SOLID ELECTROLYTE FUEL-CELLS AND STEAM ELECTROLYZER FOR HYDROGEN-PRODUCTION [J].

IWAHARA, H .

SOLID STATE IONICS, 1988, 28 :573-578

[9] PROTON DIFFUSION IN STRONTIUM CERATE CERAMICS STUDIED BY QUASI-ELASTIC NEUTRON-SCATTERING AND IMPEDANCE SPECTROSCOPY [J].

KARMONIK, C ;

HEMPELMANN, R ;

MATZKE, T ;

SPRINGER, T .

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES, 1995, 50 (06) :539-548

[10]

KARMONIK C, 1996, IN PRESS IONICS