Optimizing the Proton Conductivity with the Isokinetic Temperature in Perovskite‐Type Proton Conductors According to Meyer–Neldel Rule

2021 ◽  
pp. 2102939
Author(s):  
Peng Du ◽  
Nana Li ◽  
Xiao Ling ◽  
Zhijun Fan ◽  
Artur Braun ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Proton Conductors ◽  
Isokinetic Temperature ◽  
Perovskite Type

Fast Proton Conductors from Inorganic-Organic Composites: I. Amorphous Phosphate-Nafion and Silicophosphate-PMA/PWA Hybrids

1999 ◽  
Vol 600 ◽  
Author(s):  
Yong-Il Park ◽  
Jae-Dong Kim ◽  
Masayuki Nagai
Keyword(s):  
Phosphoric Acid ◽  
Proton Conductivity ◽  
Proton Conductors ◽  
Phosphorus Concentration ◽  
High Proton ◽  
Proton Source ◽  
Drastic Increase ◽  
Amorphous Phosphate ◽  
Exchange Resins ◽  
Very High

AbstractA drastic increase of electrical conductivity was observed in the composite of amorphous phosphate and ion-exchange resins (Nafion) as phosphorus concentration increased. Incorporation of amorphous phosphate into Nafion caused a large increase of conductivity to about 4×10−1S/cm at 23°C. However, the fabricated composite showed very low chemical stability.A high proton conductivity was also observed in a new inorganic-organic hybrids through incorporating PMA(molibdo-phosphoric acid)/PWA(tungsto-phosphoric acid) as a proton source in amorphous silicophosphate gel structure. Obtained gels were homogeneous and chemically stable. Resulting proton conductivity is very high (up to 5.5×10−3S/cm) compared to those of silicophosphate gels.

Effect of Ce/Zr Ratio on Thermal and Chemical Expansions and CO2 Resistance of Rare Earth-Doped Ba(Ce,Zr)O3 Perovskite-Type Proton Conductors

2021 ◽  
Vol 103 (1) ◽  
pp. 1753-1761
Author(s):  
Katsuhiro Nomura ◽  
Hiroyuki Shimada ◽  
Yuki Yamaguchi ◽  
Woosuck Shin ◽  
Yuji Okuyama ◽  
...  
Keyword(s):  
Rare Earth ◽  
Proton Conductors ◽  
Perovskite Type ◽  
Rare Earth Doped

Proton transfer in polyamine–P2Mo5 model adducts: exploring the effect of polyamine cations on their proton conductivity

2020 ◽  
Vol 49 (47) ◽  
pp. 17301-17309
Author(s):  
Shan Zhang ◽  
Ying Lu ◽  
Xiuwei Sun ◽  
Zhuo Li ◽  
Tianyi Dang ◽  
...  
Keyword(s):  
Proton Transfer ◽  
Proton Conductivity ◽  
Proton Conductors

Polyamine–P2Mo5 model proton conductors composed of different polyamine cations and [HxP2Mo5O23](6−x)− (x = 0, 1, 2) anions were established.

Electrical conductivity and chemical diffusion in Perovskite-type proton conductors in H2–H2O gas mixtures

2011 ◽  
Vol 192 (1) ◽  
pp. 76-82 ◽  
Author(s):  
Keiji Yashiro ◽  
Satoshi Akoshima ◽  
Takao Kudo ◽  
Masatsugu Oishi ◽  
Hiroshige Matsumoto ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Chemical Diffusion ◽  
Gas Mixtures ◽  
Proton Conductors ◽  
Perovskite Type

Structure and conductivity of Nd6MoO12-based potential electron–proton conductors under dry and wet redox conditions

2019 ◽  
Vol 6 (2) ◽  
pp. 566-575 ◽  
Author(s):  
A. V. Shlyakhtina ◽  
M. Avdeev ◽  
J. C. C. Abrantes ◽  
E. Gomes ◽  
N. V. Lyskov ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Proton Conductors ◽  
Redox Conditions ◽  
Rhombohedral Structure

Based on rhombohedral structure (R3̄) complex Nd10Mo2O21 compound has proton conductivity ∼8 × 10−4 S cm−1 at 600 °C.

Variation of optimum yttrium doping concentrations of perovskite type proton conductors BaZr1−xYxO3−α (0≤x≤0.3) with temperature

2013 ◽  
Vol 31 (10) ◽  
pp. 1017-1022 ◽  
Author(s):  
Yushi DING ◽  
Ying LI ◽  
Wenzhuo DENG ◽  
Wenlong HUANG ◽  
Changzhen WANG
Keyword(s):  
Proton Conductors ◽  
Perovskite Type ◽  
Yttrium Doping

Proton conductivity of imidazole entrapped in microporous molecular sieves

2017 ◽  
Vol 53 (16) ◽  
pp. 2475-2478 ◽  
Author(s):  
A. Jankowska ◽  
A. Zalewska ◽  
A. Skalska ◽  
A. Ostrowski ◽  
S. Kowalak
Keyword(s):  
Proton Conductivity ◽  
Molecular Sieves ◽  
Proton Conductors

Novel zeolite–imidazole composites as efficient and steady proton conductors.

Electrochemical hydrogen production from humid air using cation-modified graphene oxide membranes

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Nur Laila Hamidah ◽  
Masataka Shintani ◽  
Aynul Sakinah Ahmad Fauzi ◽  
Shota Kitamura ◽  
Elaine G. Mission ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Proton Conductivity ◽  
Room Temperature ◽  
Electrochemical Impedance ◽  
Water Electrolysis ◽  
Proton Conductors ◽  
X Ray ◽  
Chemical Structures ◽  
Modified Graphene Oxide ◽  
Modified Graphene

AbstractWater electrolysis is an environment-friendly process of producing hydrogen with zero-carbon emission. Herein, we studied the water vapor electrolysis using a proton-conducting membrane composed of graphene oxide (GO) nanosheets intercalated with cations (Al3+ and Ce3+). We examined the effect of cation introduction on the physical and chemical structures, morphology, thermal and chemical stabilities, and the proton conductivity of stacked GO nanosheet membranes by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), X-ray photoemission spectroscopy (XPS), Raman spectroscopy, atomic force microscopy (AFM), dynamic light scattering (DLS), thermogravimetric-differential thermal analysis (TG-DTA), and electrochemical impedance spectroscopy (EIS). Concentration cell measurements revealed that the cation-modified membranes are pure proton conductors at room temperature. The proton conductivity of a GO membrane was much improved by cation modification. The cation-modified GO membranes, sandwiched with Pt/C electrodes as the cathode and anode, electrolyzed humidified air to produce hydrogen at room temperature, indicating the feasibility of this carbon-based electrochemical device.

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