Effect of Oxidant/ Monomer Ratio on the Electrical Properties of Polypyrrole in Tantalum Capacitors

2006 ◽  
Vol 514-516 ◽  
pp. 43-47 ◽  
Author(s):  
Gonçalo Gonçalves ◽  
Elvira Fortunato ◽  
J.I. Martins ◽  
Rodrigo Martins
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Dip Coating ◽  
Cathode Layer ◽  
Coating Process ◽  
Monomer Ratio ◽  
Maximum Value

In this work, the relation between oxidant/monomer ratio and the electrical conductivity of polypyrrole was studied using different ratios. We achieved a maximum value for electrical conductivity of 7.5 S/cm for a ratio of 2:1. We also developed a chemical dip-coating process to produce the cathode layer in tantalum capacitors. We obtained capacitances of about 80 µF after 8 cycles using the sequence Monomer/Oxidant.

Structural, optical, and electrical properties of ZnO thin films deposited by sol-gel dip-coating process at low temperature

2014 ◽  
Vol 10 (4) ◽  
pp. 869-878 ◽  
Author(s):  
Soaram Kim ◽  
Giwoong Nam ◽  
Hyunsik Yoon ◽  
Hyunggil Park ◽  
Hyonkwang Choi ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Low Temperature ◽  
Sol Gel ◽  
Dip Coating ◽  
Zno Thin Films ◽  
Coating Process ◽  
Optical And Electrical Properties

Preparation and electrical properties of ITO thin films by dip-coating process

1996 ◽  
Vol 31 (7) ◽  
pp. 1761-1766 ◽  
Author(s):  
Keishi Nishio ◽  
Tadanori Sei ◽  
Toshio Tsuchiya
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Dip Coating ◽  
Coating Process ◽  
Ito Thin Films

Electrical Properties and Chemical Stability of BaCe1-xMoxO3-δ Proton Conductors

2014 ◽  
Vol 636 ◽  
pp. 55-60
Author(s):  
Jia Huan Xu ◽  
Biao Yu ◽  
Zhi Xuan Lin ◽  
Jun Xiang
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Chemical Stability ◽  
Proton Conductors ◽  
Boiling Water ◽  
Doping Content ◽  
Orthorhombic Structure ◽  
Maximum Value ◽  
Electrical Conductivities ◽  
Order Of Magnitude

Dense BaCe1-xMoxO3-δ ceramics were fabricated by sintering at 1450°C for 7h. All samples were characterized by XRD, SEM. All samples were orthorhombic structure. Electrical conductivities of all samples were measured by AC impedance. Electrical conductivity of Mo-doped samples reaches maximum value when doping content of Mo is 5%, which is one order of magnitude greater than that of BaCeO3. Chemical stability of BaCe1-xMoxO3-δ samples was investigated by immersing samples into the boiling water for 12h. The doping of Mo can partially inhibit the reaction between BaCeO3 and H2O.

Effect of Oxidant/Monomer Ratio on Conductivity of Ferric Chloride Oxidized Polypyrrole

2010 ◽  
Vol 663-665 ◽  
pp. 666-669
Author(s):  
Yuan Ming Huang ◽  
Bao Gai Zhai ◽  
Qing Lan Ma ◽  
Xiao Yan Kong
Keyword(s):  
Electrical Conductivity ◽  
Aqueous Medium ◽  
Ferric Chloride ◽  
Monomer Ratio ◽  
Maximum Value

A series of polypyrrole samples were synthesized by oxidizing pyrrole in the aqueous medium of ferric chloride, and the relation between oxidant/monomer ratio and the electrical conductivity of polypyrrole was studied by increasing the ratio from 0.25:1 to 2.5:1. Our results showed that the conductivity of polypyrrole was dependent on the mole ratio of the oxidant to pyrrole, and a maximum value for electrical conductivity of 1500 S/m was achieved for a ratio of 0.75:1.

Effect of Gamma Radiation on Structural, Optical and Electrical Properties of nanostructured CdHgTe Thin Films

2018 ◽  
Vol 1 (1) ◽  
pp. 26-31 ◽  
Author(s):  
B Babu ◽  
K Mohanraj ◽  
S Chandrasekar ◽  
N Senthil Kumar ◽  
B Mohanbabu
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Gamma Radiation ◽  
Glass Substrate ◽  
Gamma Ray ◽  
Optical And Electrical Properties ◽  
Deposition Technique ◽  
Polycrystalline Structure ◽  
Dc Electrical Conductivity

CdHgTe thin films were grown onto glass substrate via the Chemical bath deposition technique. XRD results indicate that a CdHgTe formed with a cubic polycrystalline structure. The crystallinity of CdHgTe thin films is gradually deteriorate with increasing the gamma irradiation. EDS spectrums confirms the presence of Cd, Hg and Te elements. DC electrical conductivity results depicted the conductivity of CdHgTe increase with increasing a gamma ray dosage

Effect of the structure of cellulose acetate membranes on their permeability, electrical conductivity and rejection

1990 ◽  
Vol 55 (12) ◽  
pp. 2933-2939 ◽  
Author(s):  
Hans-Hartmut Schwarz ◽  
Vlastimil Kůdela ◽  
Klaus Richau
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Cellulose Acetate ◽  
Reverse Osmosis ◽  
Water Flux ◽  
Cellulose Acetate Membrane ◽  
Structure Parameters ◽  
Dc Electrical Conductivity ◽  
Cellulose Acetate Membranes

Ultrafiltration cellulose acetate membrane can be transformed by annealing into reverse osmosis membranes (RO type). Annealing brings about changes in structural properties of the membranes, accompanied by changes in their permeability behaviour and electrical properties. Correlations between structure parameters and electrochemical properties are shown for the temperature range 20-90 °C. Relations have been derived which explain the role played by the dc electrical conductivity in the characterization of rejection ability of the membranes in the reverse osmosis, i.e. rRO = (1 + exp (A-B))-1, where exp A and exp B are statistically significant correlation functions of electrical conductivity and salt permeation, or of electrical conductivity and water flux through the membrane, respectively.

Enhanced electrical conductivity of Au–LaNiO3 nanocomposite thin films by chemical solution deposition

RSC Advances ◽  
2015 ◽  
Vol 5 (94) ◽  
pp. 76783-76787 ◽  
Author(s):  
H. L. Wang ◽  
X. K. Ning ◽  
Z. J. Wang
Keyword(s):  
Thin Films ◽  
Electrical Conductivity ◽  
Electrical Properties ◽  
Chemical Solution Deposition ◽  
Nanocomposite Films ◽  
Chemical Solution ◽  
Solution Deposition ◽  
Nanocomposite Thin Films ◽  
One Step

Au–LaNiO3 (Au–LNO) nanocomposite films with 3.84 at% Au were firstly fabricated by one-step chemical solution deposition (CSD), and their electrical properties were investigated.

Electrochemical characterization of YSZ thick films deposited by dip-coating process

2007 ◽  
Vol 171 (2) ◽  
pp. 783-788 ◽  
Author(s):  
F. Mauvy ◽  
P. Lenormand ◽  
C. Lalanne ◽  
F. Ansart ◽  
J.M. Bassat ◽  
...  
Keyword(s):  
Thick Films ◽  
Dip Coating ◽  
Electrochemical Characterization ◽  
Coating Process
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