Impedance analysis and protonic conduction mechanism in RbH2PO4/SiO2 composite systems

2010 ◽  
Vol 55 (24) ◽  
pp. 7298-7304 ◽  
Author(s):  
Zikun Li
Keyword(s):  
Conduction Mechanism ◽  
Impedance Analysis ◽  
Protonic Conduction ◽  
Composite Systems

Protonic Conduction and Impedance Analysis in CsHSO[sub 4]/SiO[sub 2] Composite Systems

2004 ◽  
Vol 151 (10) ◽  
pp. J76 ◽  
Author(s):  
Hitoshi Shigeoka ◽  
Junichiro Otomo ◽  
Ching-ju Wen ◽  
Masaru Ogura ◽  
Hiroshi Takahashi
Keyword(s):  
Impedance Analysis ◽  
Protonic Conduction ◽  
Composite Systems

scholarly journals Study on the Synthesize, Characterization, and Conductive Performance of Nickelzircomolybdnum Heteropoly Acid Salt with Keggin Structure

2019 ◽  
Vol 2019 ◽  
pp. 1-4
Author(s):  
Zhihong Zhang ◽  
Baoying Wang ◽  
Yijing Zhang ◽  
Gehong Zhang ◽  
Yujing Wang
Keyword(s):  
Conduction Mechanism ◽  
Heteropoly Acid ◽  
Electrochemical Impedance ◽  
Impedance Spectrum ◽  
Heteropoly Compound ◽  
Electrochemical Impedance Spectrum ◽  
Acid Salt ◽  
X Ray Diffraction ◽  
Protonic Conduction ◽  
X Ray

A novel heteropoly acid salt, Na6[Ni(Mo11ZrO39)]·20H2O, has been synthesized by the means of acidification and adding the reactants into the solution step by step. The heteropoly compound was characterized by elemental analysis, TGA/DSC, infrared spectrum, ultraviolet spectrum, X-ray diffraction, and SEM. Its protonic conduction was measured by the means of the electrochemical impedance spectrum. The results showed that it belongs to the Keggin type, and its conductivity value was 1.23 × 10–2 S/cm at 23°C when the relative humidity was 60%, and the conductivity enhanced with the elevated temperature. Its proton conduction mechanism was in accordance with vehicle mechanism, and the activation energy was 27.82 kJ/mol.

Conduction mechanism, impedance spectroscopic investigation and dielectric behavior of La0.5Ca0.5−xAgxMnO3 manganites with compositions below the concentration limit of silver solubility in perovskites (0 ≤ x ≤ 0.2)

2015 ◽  
Vol 44 (22) ◽  
pp. 10457-10466 ◽  
Author(s):  
H. Rahmouni ◽  
M. Smari ◽  
B. Cherif ◽  
E. Dhahri ◽  
K. Khirouni
Keyword(s):  
Electrical Properties ◽  
Spectroscopic Investigation ◽  
Conduction Mechanism ◽  
Complex Impedance ◽  
Impedance Analysis ◽  
Dielectric Behavior ◽  
Concentration Limit ◽  
Complex Impedance Analysis

This study presents the electrical properties, complex impedance analysis and dielectrical behavior of La0.5Ca0.5−xAgxMnO3 manganites.

Enhancement of Conductivity in Ceria-Carbonate Nanocomposites for LTSOFCs

2009 ◽  
Vol 6 ◽  
pp. 197-203 ◽  
Author(s):  
Rizwan Raze ◽  
Xiao Di Wang ◽  
Ying Ma ◽  
Yi Zhong Huang ◽  
Bin Zhu
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
High Resolution ◽  
Conduction Mechanism ◽  
Two Phase ◽  
Composite Systems ◽  
Nano Scale ◽  
Transmission Electron ◽  
Work First ◽  
Superionic Conduction

This work first explores high resolution transmission electron microscopy (TEM) to determine the interfacial regions and provide experimental evidences for interfaces between the SDC and carbonate constituent phases of the SD-carbonate two-phase composites to further investigate the superionic conduction mechanism in the ceria-carbonate composite systems and enhancement of conductivity. Schober first reported interfacial superionic conduction in ceria-based composites but without direct experimental proofs. Such superionic conduction mechanism remains unknown. Especially, in the nano-scale, this region is trifle to be detected.

Impedance analysis and conduction mechanism of Ba doped Mn1.75Ni0.7Co0.5−x Cu0.05O4 NTC thermistors

2017 ◽  
Vol 123 (9) ◽  
Author(s):  
Muhammad Asif Rafiq ◽  
Muhammad Tayyab Khan ◽  
Qaisar Khushi Muhammad ◽  
Moaz Waqar ◽  
Furqan Ahmed
Keyword(s):  
Conduction Mechanism ◽  
Impedance Analysis ◽  
Ntc Thermistors

scholarly journals Characterizing temperature dependent complex electrical impedance analysis of LaFe1−xZnxO3(x = 0.03, 0.05, and 0.07) ceramics

2020 ◽  
Vol 10 (06) ◽  
pp. 2050031
Author(s):  
D. Triyono ◽  
F. Fajriyani ◽  
U. Hanifah ◽  
R. A. Rafsanjani
Keyword(s):  
Electrical Impedance ◽  
Conduction Mechanism ◽  
Sol Gel ◽  
Translational Motion ◽  
Morphological Characteristics ◽  
Impedance Analysis ◽  
X Ray Diffraction ◽  
Temperature Dependent ◽  
X Ray ◽  
Zn Content

LaFe[Formula: see text][Formula: see text]O3 ([Formula: see text] = 0.03, 0.05, and 0.07) ceramics were prepared in two steps: preparation of the powder form by a sol–gel method followed by sintering-annealing treatments to form the bulk-phase. X-ray diffraction analysis revealed that all ceramics were crystallized in the orthorhombic perovskite structure with Pbnm symmetry. Grain size distribution and morphological characteristics were investigated by scanning electron microscopy. Specific surface area was analyzed through BET–BJH methods. Electrical impedance analysis was investigated as a function of frequency at various temperatures. It was found that the electrical behavior is dominated by grain boundary contribution, i.e., electrical conductivity. The frequency dependence of the complex conductivity was analyzed through Joncher’s power law and the dominance of translational motion with a sudden hopping mechanism in the electrical conduction mechanism increased with increasing Zn content. Activation energy decreased with increasing Zn content.

Defect Engineering of BCZT–based Piezoelectric Ceramics with High Piezoelectric Properties

2021 ◽  
Author(s):  
Xinjian Wang ◽  
Yu Huan ◽  
Yixuan Zhu ◽  
Peng Zhang ◽  
Wenlong Yang ◽  
...  
Keyword(s):  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Conduction Mechanism ◽  
Piezoelectric Properties ◽  
Hole Concentration ◽  
Impedance Analysis ◽  
Defect Engineering ◽  
Intrinsic Conduction ◽  
P Type ◽  
Mn Doped

Abstract The intrinsic conduction mechanism and optimal sintering atmosphere of (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 (BCZT) ceramics was regulated by doping Mn element in this work. By Hall and impedance analysis, the undoped BCZT ceramics exhibit a typical n–type conduction mechanism, and the electron concentration decreases with the increasing oxygen partial pressure. Therefore, the undoped ceramics exhibit best electrical properties (d33 = 585 pC/N, kp = 56%) in O2. A handful of Mn doping element would transfer the conduction mechanism from n-type into p–type. And the hole concentration reduces with the decreasing oxygen partial pressure for Mn-doped BCZT ceramics. Therefore, the Mn-doped ceramics sintered in N2 have the highest insulation resistance and best piezoelectric properties (d33 = 505 pC/N, kp = 50%). The experimental results demonstrate that the doping Mn element can effectively adjusts the intrinsic conduction mechanism and then predicts the optimal atmosphere.

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