Cart (Loading....) | Create Account
Close category search window
 

Effects of film processing conditions on electric energy storage for pulsed power applications

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Fangxiao Guan ; Dept. of Chem., Mater. & Bimolecular Eng., Univ. of Connecticut Polymer Program, Storrs, CT, USA ; Jing Wang ; Lei Zhu ; Pan, Jilin
more authors

Processing conditions have significant influence on the crystalline morphology in poly(vinylidene fluoride-co-hexafluoropropylene) [P(VDF-HFP)] copolymer films and in turn determine the electric energy storage in the final products. The electric energy storage and discharge behaviors in these P(VDF-HFP) films obtained from different processing conditions were studied by electric displacement (D) - electric field (E) loop measurements. Under the same mechanical stretching conditions in terms of stretching ratio and stretching rate, more α-crystals could be transformed into β-crystals when stretching at a lower temperature than at a higher temperature. As a result, strong coupling interactions among ferroelectric domains were induced in the films stretched at low temperatures due to a high β-crystal content. The strong coupling interactions facilitated the dipole switching behavior under the forward poling field and prevented the oriented dipoles from switching to the random (or antiferroelectric-like) state upon the reverse poling. Therefore, more electric energy was stored but less was discharged for films with a high β-crystal content. If the crystalline morphology with a high β- crystal content can be further modified to help the discharge process, a polymer capacitor film with high energy densities can be achieved.

Published in:

Dielectrics and Electrical Insulation, IEEE Transactions on  (Volume:18 ,  Issue: 4 )

Date of Publication:

August 2011

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.