Testing the Applicability of an Expression for the Non-Arrhenius Ionic Conductivity in Solid Electrolytes

2010 ◽  
Vol 123-125 ◽  
pp. 1103-1106 ◽  
Author(s):  
Takaki Indoh ◽  
Masaru Aniya
Keyword(s):  
Ionic Conductivity ◽  
Solid Electrolytes ◽  
Ionic Conduction ◽  
Present Report ◽  
Physical Factor ◽  
Arrhenius Behavior ◽  
Conduction Behavior ◽  
Mixed Ionic Electronic Conductors ◽  
Electronic Conductors ◽  
Conductivity Behavior

In a previous study, we have proposed a model that describes the non-Arrhenius ionic conduction behavior in superionic glasses. In the present report, the model is applied to analyze the conductivity behavior of a wide variety of solid electrolytes that include crystals, glasses, polymers, composites and mixed ionic-electronic conductors. From the analysis of the model, the physical factor responsible for the non-Arrhenius behavior has been extracted and discussed.

scholarly journals Mixed Ionic-Electronic Conductors Based on PEDOT:PolyDADMA and Organic Ionic Plastic Crystals

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1981
Author(s):  
Rafael Del Olmo ◽  
Nerea Casado ◽  
Jorge L. Olmedo-Martínez ◽  
Xiaoen Wang ◽  
Maria Forsyth
Keyword(s):  
Energy Storage ◽  
Ionic Conductivity ◽  
Electronic Devices ◽  
Electronic Conductivity ◽  
Ionic Conductivities ◽  
New Materials ◽  
Plastic Crystals ◽  
Energy Storage Applications ◽  
Mixed Ionic Electronic Conductors ◽  
Electronic Conductors

Mixed ionic-electronic conductors, such as poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) are postulated to be the next generation materials in energy storage and electronic devices. Although many studies have aimed to enhance the electronic conductivity and mechanical properties of these materials, there has been little focus on ionic conductivity. In this work, blends based on PEDOT stabilized by the polyelectrolyte poly(diallyldimethylammonium) (PolyDADMA X) are reported, where the X anion is either chloride (Cl), bis(fluorosulfonyl)imide (FSI), bis(trifluoromethylsulfonyl)imide (TFSI), triflate (CF3SO3) or tosylate (Tos). Electronic conductivity values of 0.6 S cm−1 were achieved in films of PEDOT:PolyDADMA FSI (without any post-treatment), with an ionic conductivity of 5 × 10−6 S cm−1 at 70 °C. Organic ionic plastic crystals (OIPCs) based on the cation N-ethyl-N-methylpyrrolidinium (C2mpyr+) with similar anions were added to synergistically enhance both electronic and ionic conductivities. PEDOT:PolyDADMA X / [C2mpyr][X] composites (80/20 wt%) resulted in higher ionic conductivity values (e.g., 2 × 10−5 S cm−1 at 70 °C for PEDOT:PolyDADMA FSI/[C2mpyr][FSI]) and improved electrochemical performance versus the neat PEDOT:PolyDADMA X with no OIPC. Herein, new materials are presented and discussed including new PEDOT:PolyDADMA and organic ionic plastic crystal blends highlighting their promising properties for energy storage applications.

ONE DIMENSIONAL NATURE OF IONIC CONDUCTIVITY IN SELF-FLUX GROWN RbTiOPO4 SINGLE CRYSTALS

2003 ◽  
Vol 17 (03) ◽  
pp. 373-382 ◽  
Author(s):  
C. V. KANNAN ◽  
S. GANESAMOORTHY ◽  
C. SUBRAMANIAN ◽  
P. RAMASAMY
Keyword(s):  
Ionic Conductivity ◽  
Ionic Conduction ◽  
Complex Impedance ◽  
Impedance Measurement ◽  
Dielectric Polarization ◽  
One Dimensional ◽  
Measured Activation Energy ◽  
Conduction Behavior ◽  
Measured Activation ◽  
Complex Impedance Measurement

The ionic conductivity of self-flux grown RbTiOPO 4 single crystal along the crystallographic a, b and c (polar) axes in the frequency range 100 Hz–10 MHz and in the temperature range 300–1140 K has been studied. The measured activation energy indicates the existence of super ionic conduction behavior in RTP crystals and also reveals that the DC electrical conduction and dielectric polarization are governed by the same mechanism. Complex impedance measurement shows the existence of non-Debye type of relaxation in the crystals.

Ionic Conduction Behavior of CMC Based Green Polymer Electrolytes

2013 ◽  
Vol 802 ◽  
pp. 194-198 ◽  
Author(s):  
M.I.N. Isa ◽  
A. S. Samsudin
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Ionic Conduction ◽  
Ethylene Carbonate ◽  
Ammonium Bromide ◽  
Casting Technique ◽  
Power Law Exponent ◽  
Conduction Behavior ◽  
Solution Casting Technique ◽  
Green Polymer

The present work deals with the findings on the ionic conduction behavior based on ethylene carbonate (EC) as plasticizer in carboxymethyl cellulose (CMC) – dodecyltrimethyl ammonium bromide (DTAB) for green polymer electrolytes (GPEs) that were prepared via solution casting technique. The highest ionic conductivity obtained for CMC-DTAB film was 7.72 x 10-4 S/cm and enhanced to 2.37 x 10-3 S/cm with addition 10wt. % of EC. The conductivity-temperature of GPEs system obeys the Arrhenius relation where the ionic conductivity increases with temperature. The temperature dependence of the power law exponent for plasticized CMC-DTAB based GPEs system follows the quantum mechanical tunneling (QMT) model for conduction mechanism.

scholarly journals A Model for Non-Arrhenius Ionic Conductivity

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 911
Author(s):  
Masaru Aniya ◽  
Masahiro Ikeda
Keyword(s):  
Ionic Conductivity ◽  
Size Effect ◽  
Temperature Dependence ◽  
Solid Electrolytes ◽  
Methyl Ethyl ◽  
Arrhenius Behavior ◽  
Energy Fluctuation ◽  
Fundamental Interest ◽  
Mobile Species ◽  
Methyl Ethyl Ether

Non-Arrhenius ionic conductivity is observed in various solid electrolytes. The behavior is intriguing, because it limits the magnitude of ionic conductivity at high temperatures. Understanding the nature of this behavior is of fundamental interest and deserves attention. In the present study, the temperature dependence of the ionic conductivity in solids and liquids is analyzed using the Bond Strength–Coordination Number Fluctuation (BSCNF) model developed by ourselves. It is shown that our model describes well the temperature dependence of ionic conductivity that varies from Arrhenius to non-Arrhenius-type behavior. According to our model, the non-Arrhenius behavior is controlled by the degree of binding energy fluctuation between the mobile species and the surroundings. A brief discussion on a possible size effect in non-Arrhenius behavior is also given. Within the available data, the BSCNF model suggests that the size effect in the degree of the non-Arrhenius mass transport behavior in a poly (methyl ethyl ether)/polystyrene (PVME/PS) blend is different from that in a-polystyrene and polyamide copolymer PA66/6I.

Review Lecture - Fast ionic conduction in solid

1984 ◽  
Vol 393 (1805) ◽  
pp. 215-234 ◽  
Keyword(s):  
Ionic Conduction ◽  
Activation Enthalpy ◽  
New Materials ◽  
Ionic Conductors ◽  
First Order ◽  
Mixed Ionic Electronic Conductors ◽  
Synthetic Chemist ◽  
Fast Ion ◽  
Electronic Conductors ◽  
Fast Ionic Conductor

Four classes of solid ionic conductors may be distinguished: ( a ) ion exchangers, ( b ) electrolytes, ( c ) electrodes, and ( d ) chemical stores. Each has important applications with different fabrication requirements. Fast ion transport is required in electric-power applications, and various strategies are discussed for power batteries. The design of new materials begins with a theoretical model for ionic transport; the situation in stoichiometric compounds is compared with that in doped compounds, and electrolytes are contrasted with mixed ionic-electronic conductors. The most significant parameters for the synthetic chemist are the factors that govern the activation enthalpy ∆ H m for diffusion, the concentration c of mobile carriers, and the temperature T t for any phase transition from a normal to a fast ionic conductor. Strategies for decreasing ∆ H m and increasing c prove to be ion-specific, and the most successful strategies for each mobile ion are presented. The origin of a T t in stoichiometric com­pounds and the distinction between smooth and first-order transitions are also considered.

Sign in / Sign up

Export Citation Format

Share Document