Relationship between the activation energy of ion migration and the heat of transport in some ionic conductors

2012 ◽  
Vol 532 ◽  
pp. 107-110 ◽  
Author(s):  
S. Taniguchi ◽  
M. Aniya
Keyword(s):  
Activation Energy ◽  
Ionic Conductors ◽  
Ion Migration ◽  
Heat Of Transport

High performance perovskite memristor by integrating tip shape contact

2021 ◽  
Author(s):  
Su-Ting Han ◽  
Jiangming Chen ◽  
Zihao Feng ◽  
Mingtao Luo ◽  
Junjie Wang ◽  
...  
Keyword(s):  
Activation Energy ◽  
High Performance ◽  
Random Access ◽  
Random Access Memory ◽  
Resistive Random Access Memory ◽  
Access Memory ◽  
Ion Migration ◽  
Halide Perovskite

Resistive random access memory (RRAM) based on hybrid organic-inorganic halide perovskite (HOIP) has recently gained significant interests due to its low activation energy of ion migration. HOIP RRAM has been...

Insights into the interparticle mixing of CsPbBr3 and CsPbI3 nanocubes: halide ion migration and kinetics

Nanoscale ◽  
2020 ◽  
Vol 12 (40) ◽  
pp. 20840-20848
Author(s):  
Anamul Haque ◽  
Trupthi Devaiah Chonamada ◽  
Arka Bikash Dey ◽  
Pralay K. Santra
Keyword(s):  
Activation Energy ◽  
Ion Migration

Interparticle mixing of CsPbBr3 and CsPbI3 nanocrystals proceeds via the free oleylammonium halides, having an activation energy of 0.75 ± 0.05 eV.

scholarly journals Elucidation of the role of guanidinium incorporation in single-crystalline MAPbI3 perovskite on ion migration and activation energy

2020 ◽  
Vol 22 (20) ◽  
pp. 11467-11473 ◽  
Author(s):  
Apurba Mahapatra ◽  
Rashmi Runjhun ◽  
Jan Nawrocki ◽  
Janusz Lewiński ◽  
Abul Kalam ◽  
...  
Keyword(s):  
Activation Energy ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Temperature Dependent ◽  
Ion Migration ◽  
Single Crystalline

We have studied the effect of guanidinium incorporation in a single-crystalline MAPbI3 perovskite on ion migration using temperature-dependent electrochemical impedance spectroscopy.

scholarly journals Quantification of ion migration in CH3NH3PbI3 perovskite solar cells by transient capacitance measurements

2019 ◽  
Vol 6 (7) ◽  
pp. 1497-1503 ◽  
Author(s):  
Moritz H. Futscher ◽  
Ju Min Lee ◽  
Lucie McGovern ◽  
Loreta A. Muscarella ◽  
Tianyi Wang ◽  
...  
Keyword(s):  
Activation Energy ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Energy Concentration ◽  
Ion Migration ◽  
Capacitance Measurements ◽  
Ion Drift ◽  
Transient Capacitance ◽  
Mobile Ions ◽  
And Diffusion

We quantify activation energy, concentration, and diffusion coefficient of mobile ions in MAPbI3 perovskite solar cells using transient ion-drift measurements.

scholarly journals Protonic Conduction of Nanostructured Y-Doped BaZrO3

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Hee Jung Park ◽  
Jong Wook Roh
Keyword(s):  
Crystal Structure ◽  
Activation Energy ◽  
Grain Boundary ◽  
High Resistance ◽  
The Other ◽  
Barium Zirconate ◽  
Ionic Conductors ◽  
Protonic Conduction ◽  
Impedance Measurements ◽  
Perovskite Crystal

Nanostructured ionic conductors have recently attracted our attention due to the expectation that they may lead to new functionalities absent in microcrystalline conductors. In this study, nanostructured barium zirconate with perovskite crystal structure was prepared and its grain and grain boundary protonic conduction was investigated using ac impedance measurements as a function of temperature (RT ~ 400°C) and water partial pressure. The grain was highly conductive of protons, which is governed by the concentration of protonic defects at all temperatures. On the other hand, the grain boundary was not the preferred route for protonic conduction due to high resistance. However, enhanced protonic transport was observed at certain temperatures (<100°C). The protonic resistivity below that temperature decreased with decreasing temperature, showing positive activation energy in relation to temperature. The conduction route for the enhanced transport was the serial grain boundary. In addition, the route was compared with that of nanostructured zirconia with fluorite crystal-structure.

scholarly journals The effect of undecaprenol on bilayer lipid membranes.

1994 ◽  
Vol 41 (3) ◽  
pp. 351-358 ◽  
Author(s):  
T Janas ◽  
T Chojnacki ◽  
E Swiezewska ◽  
T Janas
Keyword(s):  
Activation Energy ◽  
Lipid Membranes ◽  
Electrical Potential ◽  
Membrane Conductance ◽  
Transference Numbers ◽  
Bilayer Lipid Membranes ◽  
Ion Migration ◽  
Bilayer Lipid ◽  
Membrane Breakdown ◽  
Transmembrane Electrical Potential

The influence of undecaprenol on phosphatidylcholine macrovesicular bilayer lipid membranes has been studied by electrophysiological techniques. The current-voltage characteristics, ionic transference numbers, the membrane conductance-temperature relationships and the membrane breakdown voltage were measured. The permeability coefficients for Na+ and Cl- ions, the activation energy of ion migration across the membrane, the membrane hydrophobic thickness and the membrane Young's modulus were determined. Undecaprenol increases membrane conductance, membrane capacitance, membrane ionic permeability and membrane elastic deformability, decreases the activation energy, membrane hydrophobic thickness and membrane electromechanical stability, and does not change membrane selectivity. The formation by undecaprenyl molecules of fluid microdomains modulating membrane hydrophobic thickness is postulated. The data suggest that the behaviour of undecaprenol in membranes is regulated by transmembrane electrical potential.

Growth of nanocrystalline PbS within a glass

1997 ◽  
Vol 12 (10) ◽  
pp. 2507-2510 ◽  
Author(s):  
M. Mukherjee ◽  
A. Datta ◽  
D. Chakravorty
Keyword(s):  
Activation Energy ◽  
Particle Size ◽  
Band Gap ◽  
Sodium Ion ◽  
Oxide Glass ◽  
Dc Resistivity ◽  
Ion Migration ◽  
Temperature Range ◽  
Resistivity Variation ◽  
O 15

Nanocrystalline PbS has been grown within a phase-separated oxide glass of composition 10 Na2O, 15 PbO, 17 CaO, 3 Bi2O3, and 55 SiO2 (in mole %) by passing H2S gas over it at temperatures varying from 773 to 943 K. The particle size ranged from 2.5 to 12.9 nm. The dc resistivity of composites of nanocrystalline PbS and the phase separated glass has been measured over the temperature range 300 to 670 K. The resistivity variation in the temperature range 550 to 670 K is characterized by the sodium ion migration in the glass with an activation energy, ∼1.2 eV. The resistivity in the range 300 to 500 K was controlled by conduction in PbS particles with the estimated band gap showing an increase with a decrease in the particle size.

A model for the heat of transport in ionic conductors

2009 ◽  
Vol 180 (6-8) ◽  
pp. 467-470 ◽  
Author(s):  
S. Taniguchi ◽  
M. Aniya
Keyword(s):  
Ionic Conductors ◽  
Heat Of Transport

scholarly journals Syntheses and Characterization of Novel Perovskite-Type LaScO3-Based Lithium Ionic Conductors

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 299
Author(s):  
Guowei Zhao ◽  
Kota Suzuki ◽  
Masaaki Hirayama ◽  
Ryoji Kanno
Keyword(s):  
Activation Energy ◽  
Ionic Conductivity ◽  
Structure Refinement ◽  
Compositional Analysis ◽  
Unit Cell ◽  
Phase Identification ◽  
Ionic Conductors ◽  
Co Doping ◽  
A Site ◽  
Perovskite Type

Perovskite-type lithium ionic conductors were explored in the (LixLa1−x/3)ScO3 system following their syntheses via a high-pressure solid-state reaction. Phase identification indicated that a solid solution with a perovskite-type structure was formed in the range 0 ≤ x < 0.6. When x = 0.45, (Li0.45La0.85)ScO3 exhibited the highest ionic conductivity and a low activation energy. Increasing the loading of lithium as an ionic diffusion carrier expanded the unit cell volume and contributed to the higher ionic conductivity and lower activation energy. Cations with higher oxidation numbers were introduced into the A/B sites to improve the ionic conductivity. Ce4+ and Zr4+ or Nb5+ dopants partially substituted the A-site (La/Li) and B-site Sc, respectively. Although B-site doping produced a lower ionic conductivity, A-site Ce4+ doping improved the conductive properties. A perovskite-type single phase was obtained for (Li0.45La0.78Ce0.05)ScO3 upon Ce4+ doping, providing a higher ionic conductivity than (Li0.45La0.85)ScO3. Compositional analysis and crystal-structure refinement of (Li0.45La0.85)ScO3 and (Li0.45La0.78Ce0.05)ScO3 revealed increased lithium contents and expansion of the unit cell upon Ce4+ co-doping. The highest ionic conductivity of 1.1 × 10−3 S cm−1 at 623 K was confirmed for (Li0.4Ce0.15La0.67)ScO3, which is more than one order of magnitude higher than that of the (LixLa1−x/3)ScO3 system.

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