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.

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.

How Certain Are the Reported Ionic Conductivities of Thiophosphate-Based Solid Electrolytes? an Interlaboratory Study

2020 ◽  
Author(s):  
Saneyuki Ohno ◽  
Tim Bernges ◽  
Johannes Buchheim ◽  
Marc Duchardt ◽  
Anna-Katharina Hatz ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Ionic Conductivity ◽  
Relative Standard Deviation ◽  
Solid Electrolytes ◽  
Ionic Conductivities ◽  
Ionic Conductors ◽  
Energy Storage Devices ◽  
Activation Barriers ◽  
Storage Devices ◽  
Relative Standard

<p>Owing to highly conductive solid ionic conductors, all-solid-state batteries attract significant attention as promising next-generation energy storage devices. A lot of research is invested in the search and optimization of solid electrolytes with higher ionic conductivity. However, a systematic study of an <i>interlaboratory reproducibility</i> of measured ionic conductivities and activation energies is missing, making the comparison of absolute values in literature challenging. In this study, we perform an uncertainty evaluation via a Round Robin approach using different Li-argyrodites exhibiting orders of magnitude different ionic conductivities as reference materials. Identical samples are distributed to different research laboratories and the conductivities and activation barriers are measured by impedance spectroscopy. The results show large ranges of up to 4.5 mScm<sup>-1</sup> in the measured total ionic conductivity (1.3 – 5.8 mScm<sup>-1</sup> for the highest conducting sample, relative standard deviation 35 – 50% across all samples) and up to 128 meV for the activation barriers (198 – 326 meV, relative standard deviation 5 – 15%, across all samples), presenting the necessity of a more rigorous methodology including further collaborations within the community and multiplicate measurements.</p>

scholarly journals Constructing a stable interface between sulfide electrolyte and Li metal anode via a Li+-conductive gel polymer interlayer

2021 ◽  
Author(s):  
Ya-Hui Wang ◽  
Junpei Yue ◽  
Wen-Peng Wang ◽  
Wan-Ping Chen ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Solid Electrolytes ◽  
High Energy ◽  
High Ionic Conductivity ◽  
Practical Realization ◽  
Metal Anode ◽  
Li Metal Anode

Due to high ionic conductivity, favorable mechanical plasticity, and non-flammable properties, inorganic sulfide solid electrolytes bring opportunities to the practical realization of rechargeable Li-metal batteries with high energy, yet their...

Surface Modification of Solid Electrolytes for Advanced Chemical Sensors.

1988 ◽  
Vol 135 ◽  
Author(s):  
Werner Weppner
Keyword(s):  
Surface Modification ◽  
Solid State ◽  
Ionic Conductivity ◽  
Process Control ◽  
Environmental Protection ◽  
Chemical Sensors ◽  
Solid Electrolytes ◽  
Elevated Temperatures ◽  
High Ionic Conductivity ◽  
Ion Conductors

Solid State ion conductors are sucessfully employed in chemical sensors for gases such as oxygen for process control and environmental protection. The application requires elevated temperatures for sufficiently high ionic conductivity and is restricted to a few gases for which suitable solid electrolytes are available.

Kinetically Stable Anode Interface for Li3YCl6-Based All-Solid-State Lithium Batteries

2021 ◽  
Author(s):  
Weixiao Ji ◽  
Dong Zheng ◽  
Xiaoxiao Zhang ◽  
Tianyao Ding ◽  
Deyang Qu
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Oxidative Stability ◽  
Lithium Batteries ◽  
Solid Electrolytes ◽  
Metal Anode ◽  
Li Metal Anode

Despite excellent ionic conductivity and electrochemical oxidative stability, the emerging halide-based solid electrolytes suffer from inherent instability toward Li metal anode. A thick and resistive interface can be formed by...

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