Carrier–Carrier Interaction in Proton-Conducting Perovskites: Carrier Blocking vs Trap-Site Filling

2019 ◽  
Vol 123 (44) ◽  
pp. 26823-26830 ◽  
Author(s):  
Kazuaki Toyoura ◽  
Takeo Fujii ◽  
Naoyuki Hatada ◽  
Donglin Han ◽  
Tetsuya Uda
Keyword(s):  
Trap Site ◽  
Proton Conducting ◽  
Carrier Interaction

Interaction of H2O, O2 and H2 with Proton Conducting Oxides Based on Lanthanum Scandates

2019 ◽  
pp. 88-100
Author(s):  
A. S. Farlenkov ◽  
N. A. Zhuravlev ◽  
Т. A. Denisova ◽  
М. V. Ananyev
Keyword(s):  
Water Vapor ◽  
Partial Pressure ◽  
Gas Phase ◽  
Molecular Hydrogen ◽  
Proton Magnetic Resonance ◽  
Partial Pressure Of Oxygen ◽  
Proton Conducting ◽  
Conducting Oxides ◽  
Temperature Range ◽  
Apparent Level

The research uses the method of high-temperature thermogravimetric analysis to study the processes of interaction of the gas phase in the temperature range 300–950 °C in the partial pressure ranges of oxygen 8.1–50.7 kPa, water 6.1–24.3 kPa and hydrogen 4.1 kPa with La1–xSrxScO3–α oxides (x = 0; 0.04; 0.09). In the case of an increase in the partial pressure of water vapor at a constant partial pressure of oxygen (or hydrogen) in the gas phase, the apparent level of saturation of protons is shown to increase. An increase in the apparent level of saturation of protons of the sample also occurs with an increase in the partial pressure of oxygen at a constant partial pressure of water vapor in the gas phase. The paper discusses the causes of the observed processes. The research uses the hydrogen isotope exchange method with the equilibration of the isotope composition of the gas phase to study the incorporation of hydrogen into the structure of proton-conducting oxides based on strontium-doped lanthanum scandates. The concentrations of protons and deuterons were determined in the temperature range of 300–800 °C and a hydrogen pressure of 0.2 kPa for La0.91Sr0.09ScO3–α oxide. The paper discusses the role of oxygen vacancies in the process of incorporation of protons and deuterons from the atmosphere of molecular hydrogen into the structure of the proton conducting oxides La1–xSrxScO3–α (x = 0; 0.04; 0.09). The proton magnetic resonance method was used to study the local structure in the temperature range 23–110 °C at a rotation speed of 10 kHz (MAS) for La0.96Sr0.04ScO3–α oxide after thermogravimetric measurements in an atmosphere containing water vapor, and after exposures in molecular hydrogen atmosphere. The existence of proton defects incorporated into the volume of the investigated proton oxide from both the atmosphere containing water and the atmosphere containing molecular hydrogen is unambiguously shown. The paper considers the effect of the contributions of the volume and surface of La0.96Sr0.04ScO3–α oxide on the shape of the proton magnetic resonance spectra.

Flexible Dual-Gate MoS₂ Neuromorphic Transistors on Freestanding Proton-Conducting Chitosan Membranes

2021 ◽  
pp. 1-5
Author(s):  
Chunsheng Chen ◽  
Yongli He ◽  
Li Zhu ◽  
Ying Zhu ◽  
Yi Shi ◽  
...  
Keyword(s):  
Proton Conducting ◽  
Dual Gate ◽  
Chitosan Membranes

scholarly journals Durable and highly proton conducting poly(arylene perfluorophenylphosphonic acid) membranes

2021 ◽  
Vol 623 ◽  
pp. 119074
Author(s):  
Na Rae Kang ◽  
Thanh Huong Pham ◽  
Hannes Nederstedt ◽  
Patric Jannasch
Keyword(s):  
Proton Conducting

A water-stable open-framework zirconium(IV) phosphate and its water-assisted high proton conduct

CrystEngComm ◽  
2021 ◽  
Author(s):  
Jing-Wei Yu ◽  
Hai-Jiao Yu ◽  
Zhi-Yuan Yao ◽  
Zi-Han Li ◽  
Qiu Ren ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Conducting Material ◽  
Proton Conducting ◽  
Open Framework ◽  
High Proton ◽  
3D Framework

A water stable proton-conducting material (NH4)5[Zr3(OH)3F6(PO4)2(HPO4) (ZrP) was hydrothermally synthesized. The three-dimensional (3D) framework of ZrP is composed of ZrF2O4 octahedra and HxPO4 phosphate units and forming 18-ring channels through...

scholarly journals Theoretical hydrogen bonding calculations and proton conduction for Eu(iii)-based metal–organic framework

RSC Advances ◽  
2021 ◽  
Vol 11 (19) ◽  
pp. 11495-11499
Author(s):  
Lu Feng ◽  
Tian-Yu Zeng ◽  
Hao-Bo Hou ◽  
Hong Zhou ◽  
Jian Tian
Keyword(s):  
Hydrogen Bonding ◽  
Theoretical Calculation ◽  
Proton Transport ◽  
Metal Organic Framework ◽  
Proton Conduction ◽  
Transport Channel ◽  
Proton Conducting ◽  
Metal Organic ◽  
Organic Framework

A water-mediated proton-conducting Eu(iii)-MOF has been synthesized, which provides a stable proton transport channel that was confirmed by theoretical calculation.

Sign in / Sign up

Export Citation Format

Share Document