Lanthanide co-doping of solid electrolytes: AC conductivity behaviour

1999 ◽  
Vol 19 (6-7) ◽  
pp. 837-841 ◽  
Author(s):  
J. van Herle ◽  
D. Seneviratne ◽  
A.J. McEvoy
Keyword(s):  
Ac Conductivity ◽  
Solid Electrolytes ◽  
Co Doping ◽  
Conductivity Behaviour

Synthesis and Lithium Ion Conductivity of MP2O7-Based Solid Electrolytes

2008 ◽  
Vol 388 ◽  
pp. 53-56 ◽  
Author(s):  
Akihiro Kato ◽  
Morihiro Saito ◽  
Jun Kuwano
Keyword(s):  
Ac Conductivity ◽  
Solid Electrolytes ◽  
Lithium Ion ◽  
Activation Energies ◽  
Ion Conductivity ◽  
Conductivity Measurements ◽  
Ac Conductivity Measurements ◽  
Lithium Ion Conductivity

Phase studies and ac-conductivity measurements were carried out in the compositions M0.8In0.2Li0.2P2O7 [MILP] (M=Sn, Zr, Ti). The bulk conductivities were of the order of ~10-5 Scm-1 at 623 K and higher in the order of TiILP≥ZrILP>SnILP. The activation energies, as expected, became lower in the order of ZrILP<TiILP<SnILP with increasing size of the bottleneck windows for hopping of the Li ions. The order of TiILP≥ZrILP>SnILP in bulk conductivities were not correlated with that of the activation energies probably because of the impureness of the ZrILP sample.

Dielectric relaxation and AC conductivity behaviour of Se80Te15Bi5/PVA nanocomposite film

2019 ◽  
Vol 79 ◽  
pp. 106088 ◽  
Author(s):  
Rakhi Nangia ◽  
Neeraj K. Shukla ◽  
Ambika Sharma ◽  
Deepika
Keyword(s):  
Dielectric Relaxation ◽  
Nanocomposite Film ◽  
Ac Conductivity ◽  
Conductivity Behaviour

Effect of La 3+ and Pr 3+ co-doping on structural, thermal and electrical properties of ceria ceramics as solid electrolytes for IT-SOFC applications

2018 ◽  
Vol 18 (10) ◽  
pp. 1134-1142 ◽  
Author(s):  
Chittimadula Madhuri ◽  
Kasarapu Venkataramana ◽  
Alwiyah Nurhayati ◽  
C. Vishnuvardhan Reddy
Keyword(s):  
Electrical Properties ◽  
Solid Electrolytes ◽  
Co Doping ◽  
Thermal And Electrical Properties

Dielectric relaxation and ac conductivity behaviour of polyvinyl alcohol–HgSe quantum dot hybrid films

2014 ◽  
Vol 47 (27) ◽  
pp. 275301 ◽  
Author(s):  
Subhojyoti Sinha ◽  
Sanat Kumar Chatterjee ◽  
Jiten Ghosh ◽  
Ajit Kumar Meikap
Keyword(s):  
Quantum Dot ◽  
Polyvinyl Alcohol ◽  
Dielectric Relaxation ◽  
Ac Conductivity ◽  
Hybrid Films ◽  
Conductivity Behaviour

The influence of co-doping strontium and zirconium on structure and ionic conductivities of Li6+yLa3−ySryNbZrO12 solid electrolytes

2019 ◽  
Vol 34 (01n03) ◽  
pp. 2040006
Author(s):  
Tianhang Zhang ◽  
Yangai Liu ◽  
Timothy Daniel Christopher ◽  
Saifang Huang ◽  
Tao Yang ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Cross Section ◽  
Solid Electrolytes ◽  
Ionic Conductivities ◽  
Secondary Phase ◽  
Co Doping ◽  
Lithium Garnet ◽  
Cubic Structure ◽  
Total Ionic Conductivity ◽  
Lithium Garnets

To enhance the ionic conductivity of lithium garnets, a co-doping strategy was adopted with both strontium and zirconium for [Formula: see text] ([Formula: see text], 0.25, 0.5, 0.75 and 1.0) (LLSNZO). By increasing the content of Sr, lithium garnet ceramics maintain cubic structure when [Formula: see text] is in the range of 0–0.75. A secondary phase of [Formula: see text] appeared in the ceramic when [Formula: see text]. We also studied the cross-section of lithium garnets with silver electrode. Results showed that the density of LLSNZO ceramics increased continuously against the increase of Sr content, while their total ionic conductivity enhanced initially and then reduced, with the maximum reached when [Formula: see text]. It is indicated that ionic conductivity of lithium garnets is not only decided by the density but also decided by the concentration and the mobility of [Formula: see text].

scholarly journals The Effect of Co doping on Structural, Optical and Dielectric Behaviour of TiO2 Nanoparticles

2021 ◽  
Vol 71 (03) ◽  
pp. 390-394
Author(s):  
Harpreet Singh Mahal ◽  
Bhanu Partap Singh ◽  
Ravi Kant
Keyword(s):  
Dielectric Constant ◽  
Dielectric Loss ◽  
Tio2 Nanoparticles ◽  
Ac Conductivity ◽  
Anatase Phase ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Cobalt Ions ◽  
Co Doping ◽  
Vis Spectroscopy

Chemical precipitation method was used to synthesise pure and Co-doped TiO2 nanoparticles. The synthesised nanoparticles were studied for its structural optical and dielectric properties. X-Ray diffraction (XRD) confirmed the anatase phase with the tetragonal structure obtained for both samples. No extra peak was obtained in the pattern indicates that cobalt ions were successfully incorporated. The crystallite size of both samples were determined by using Debye-Scherrer’s method, and it was found that it decreases with the dopant addition. UV vis spectroscopy was performed to study the optical properties of both samples. The dielectric constant (εʹ), dielectric loss and ac conductivity (σac) of both samples were studied against the frequency. The dielectric constant, dielectric loss and ac conductivity results showed that Co-doping has a significant effect.

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