Examining the Mechanism of Current Conduction at Varying Temperatures in Polyimide Nanocomposite Films

Charge injection and conduction are fundamental phenomena that occur in dielectric materials when subjected to both low and high electric fields. This paper delves into the exploration of various conduction mechanisms, including space-charge-limited current (SCLC), Schottky charge injection, Poole–F...

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Bibliographic Details
Published inEnergies (Basel) Vol. 16; no. 23; p. 7796
Main Authors Akram, Shakeel, Haq, Inzamam Ul, Castellon, Jerome, Nazir, M. Tariq
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2023
Subjects
conduction current
Dielectric films
Dielectric properties
Dielectrics
Electric fields
Electric vehicles
Electrical conductivity
Electrodes
Green technology
Heat conductivity
Intermetallic compounds
Molecular weight
multilayer insulation
nanocomposite films
Nanocomposites
Nanoparticles
polyimide
Superconductors
Temperature
Thin films
Wind power
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Summary:Charge injection and conduction are fundamental phenomena that occur in dielectric materials when subjected to both low and high electric fields. This paper delves into the exploration of various conduction mechanisms, including space-charge-limited current (SCLC), Schottky charge injection, Poole–Frenkel, and hopping charge conduction, to elucidate the prevailing conduction mechanism in single and multilayer polyimide (PI)/SiO2 nanocomposite films across a range of temperatures. At elevated electric field strengths, the conduction behavior transitions from ohmic to exhibiting a non-linear current–voltage dependence. The investigation highlights that PI nanocomposite films display distinct conduction behaviors contingent on both the applied electric field and temperature conditions. The insights derived from this study provide valuable empirical groundwork and explanations for conducting current measurements in PI-based insulation systems, particularly in applications such as motor insulation for electric vehicles.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16237796