5.5.3 Proton conduction in electrolyte made of manganese dioxide for hydrogen gas sensor
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- 5.5 Cation Conductor-based Gas Sensors
- H. Koyanaka - Institute for Integrated Cell-Material Sciences, Kyoto University (Japan), Forward Science Laboratory (Japan), Y. Ueda - Research Institute for Sustainable Humanosphere, Kyoto University (Japan), K. Takeuchi - Tokyo University of Science (Japan), A. Kolesnivkov - Oak Ridge National Laboratory (USA)
- 497 - 499
Abstract: We propose a network model of oxygen-pairs to store and conduct protons on the surface of manganese dioxide with a weak covalent bond like protons stored in pressured ice. The atomic distances of oxygen-pairs were estimated between 2.57 and 2.60 angstroms in crystal structures of ramsdellite-type and lambda-type manganese dioxides by using protonated samples and inelastic neutron scattering measurements. Good properties for a hydrogen gas sensor using electrolytes made of manganese dioxides that contain such oxygen-pairs were confirmed experimentally.