scholarly journals Ion Dynamics Study of Potato Starch + Sodium Salts Electrolyte System

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Tuhina Tiwari ◽  
Neelam Srivastava ◽  
P. C. Srivastava
Keyword(s):  
Electrical Properties ◽  
Power Law ◽  
Polymer Electrolytes ◽  
Potato Starch ◽  
Charge Carriers ◽  
Ion Dynamics ◽  
Electrolyte System ◽  
Sodium Salts ◽  
Dielectric Data

The effect of different anions, namely,SCN−,I−, andClO4−, on the electrical properties of starch-based polymer electrolytes has been studied. Anion size and conductivity are having an inverse trend indicating systems to be predominantly anionic conductor. Impact of anion size and multiplet forming tendency is reflected in number of charge carriers and mobility, respectively. Ion dynamics study reveals the presence of different mechanisms in different frequency ranges. Interestingly, superlinear power law (SLPL) is found to be present at <5 MHz frequency, which is further confirmed by dielectric data.

Effect of Filler Type on the Electrical Properties of Hexanoyl Chitosan-Based Polymer Electrolytes

2013 ◽  
Vol 832 ◽  
pp. 224-227 ◽  
Author(s):  
Nurul Hazwani Aminuddin Rosli ◽  
F.H. Muhammad ◽  
Chin Han Chan ◽  
Tan Winie
Keyword(s):  
Electrical Properties ◽  
Polymer Electrolytes ◽  
Preliminary Investigation ◽  
Lithium Perchlorate ◽  
Electrolyte System ◽  
Casting Technique ◽  
Nanocomposite Polymer ◽  
Hexanoyl Chitosan ◽  
Maximum Conductivity ◽  
Solution Casting Technique

A preliminary investigation of polymer electrolyte based on hexanoyl chitosan, lithium perchlorate (LiClO4) and various filler additives are described in this paper. Hexanoyl chitosan-based nanocomposite polymer electrolytes were prepared using solution casting technique. The effect of filler addition and type of filler on the electrical properties of the prepared electrolyte system was investigated by impedance spectroscopy (IS). The maximum conductivity of 3.06 × 10-4 S cm-1 and 1.96 × 10-4 S cm-1 were achieved for the hexanoyl chitosan-LiClO4-TiO2 and hexanoyl chitosan-LiClO4-SiO2 electrolyte system, respectively. The variations in conductivity observed were discussed quantitatively using the Rice and Roth model from which the concentration of free ions and their mobility were calculated.

Composition-Dependent Electrical Conductivity of Ionic-Electronic Composite

1997 ◽  
Vol 500 ◽  
Author(s):  
M. Park ◽  
G. M. Choi
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Electromotive Force ◽  
Composition Dependence ◽  
Force Measurement ◽  
Ionic Transport ◽  
Charge Carriers ◽  
Stabilized Zirconia ◽  
Ionic Charge ◽  
Polarization Technique

ABSTRACTComposition. dependence of electrical conductivity of ionic-electronic composite was camined using yttria(8mol%) stabilized zirconia-NiO composites. The contributions of ectronic and ionic charge carriers to the electrical conductivity were determined by Hebb-Vagner polarization technique and electromotive force measurement of galvanic cell. Up to 6 sol% NiO addition, the conductivity decreased since the electronic NiO acted as an insulator in onic matrix. However the ionic transport was dominant until NiO content reaches 26 vol%. Mixed conduction was observed between 26 and 68 vol% of NiO. The effects of composition on he electrical properties were explained by the microstructure and thus by the distribution of two hases.

scholarly journals Bio-Based Polymer Electrolytes for Electrochemical Devices: Insight into the Ionic Conductivity Performance

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 838 ◽  
Author(s):  
Marwah Rayung ◽  
Min Min Aung ◽  
Shah Christirani Azhar ◽  
Luqman Chuah Abdullah ◽  
Mohd Sukor Su’ait ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Polymer Electrolytes ◽  
Future Prospects ◽  
Electrolyte System ◽  
The Past ◽  
Device Applications ◽  
Electrochemical Devices ◽  
Insight Into ◽  
General Method

With the continuing efforts to explore alternatives to petrochemical-based polymers and the escalating demand to minimize environmental impact, bio-based polymers have gained a massive amount of attention over the last few decades. The potential uses of these bio-based polymers are varied, from household goods to high end and advanced applications. To some extent, they can solve the depletion and sustainability issues of conventional polymers. As such, this article reviews the trends and developments of bio-based polymers for the preparation of polymer electrolytes that are intended for use in electrochemical device applications. A range of bio-based polymers are presented by focusing on the source, the general method of preparation, and the properties of the polymer electrolyte system, specifically with reference to the ionic conductivity. Some major applications of bio-based polymer electrolytes are discussed. This review examines the past studies and future prospects of these materials in the polymer electrolyte field.

Ion dynamics in methylcellulose–LiBOB solid polymer electrolytes

Ionics ◽  
2016 ◽  
Vol 22 (11) ◽  
pp. 2113-2121 ◽  
Author(s):  
S. Z. Yusof ◽  
H. J. Woo ◽  
A. K. Arof
Keyword(s):  
Polymer Electrolytes ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Ion Dynamics

Electrical Properties of Sb-Doped BaPbO3 Ceramics

2008 ◽  
Vol 368-372 ◽  
pp. 653-655
Author(s):  
Xin Wang ◽  
Yu Dong Lu ◽  
Zhi Qiang Zhuang
Keyword(s):  
Electrical Resistivity ◽  
Electrical Properties ◽  
Curie Temperature ◽  
Grain Boundaries ◽  
Solid Solubility ◽  
Defect Structure ◽  
Sol Gel ◽  
Charge Carriers ◽  
Donor Concentration ◽  
Main Factor

Sb-doped BaPbO3 ceramics were prepared by sol-gel method. The influence of Pb/Ba ratio and Sb concentration on the electrical properties of BaPb1+x-ySbyO3 (x=0.0, 0.1, 0.2 and 0≤y≤0.2) compositions were investigated. Holes and Pb vacancies were the major defects in lightly donor-doped BaPbO3, where the increase of donor concentration resulted in decrease of charge carriers (holes), leading to resistivity increasing. In the highly donor-doped conditions, the microstructure or solid solubility substituted defect structure as the main factor affecting the variety of resistivity. The lowest electrical resistivity of Sb-doped BaPbO3 was 2.69 × 10-4 /·cm when the Sb concentration y=0.12~0.13. Excess of Pb causes the born of barium vacancies. And, the observed PTCR behavior of BaPb1.2O3 involves the Barium vacancies in grain boundaries. 0.5 mol% Sb-doped BaPbO3 showed the best PTCR behavior and its Curie temperature was about 850°C.

scholarly journals Diffusion-Limited Aggregation in Potato Starch and Hydrogen Borate Electrolyte System

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Tuhina Tiwari ◽  
Manindra Kumar ◽  
Kamlesh Pandey ◽  
Neelam Srivastava ◽  
P. C. Srivastava
Keyword(s):  
Boric Acid ◽  
Potato Starch ◽  
Broad Peak ◽  
Vibration Band ◽  
Electrolyte System ◽  
Diffusion Limited Aggregation ◽  
Xrd Pattern ◽  
Diffusion Limited ◽  
Amorphous Nature ◽  
External Stimuli

Natural growth of diffusion-limited aggregate (DLA), without any external stimuli, in boric acid doped starch system is reported here. Fractals grown were confirmed to be of diffusion-limited aggregate (DLA) pattern having fractal dimension ~1.49. Effect of substrate and humidity on growth pattern has also been discussed. The existence of a different vibration band of H3BO3in FTIR confirmed that growth structures are related to boric acid. XRD pattern has shown broad peak along with some sharp peaks. Broad peak is related to starch’s amorphous nature, as where intense sharp peaks are due to boric acid.

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