TY - GEN
T1 - Electrical breakdown in ferroelectric polymers for electrical energy storage
AU - Claude, Jason
AU - Lu, Yingying
AU - Wang, Qing
PY - 2008
Y1 - 2008
N2 - High permittivity polymers are attractive materials for electrical energy storage for a wide range of applications such as capacitor dielectrics. Ferroelectric polymers based on vinylidene fluoride (VDF), trifluoroethylene (TrFE), and chlorotrifluoroethylene (CTFE) exhibit some of the highest permittivities and energy densities among polymers. Energy density in a capacitor is exponentially related to the electric field applied to the dielectric, which is limited by the polymer's electrical breakdown strength. Modest increases in a polymer's breakdown strength could easily double or triple its energy density making this a crucial variable for performance. With the goal of identifying the failure mechanism, the influence of chemical composition on the electrical breakdown strength of these ferroelectric polymers is explored. Electromechanical breakdown is identified as the failure mechanism and experimental results are fitted to modeled predictions. Additionally, the breakdown properties are related to the energy densities of the polymers.
AB - High permittivity polymers are attractive materials for electrical energy storage for a wide range of applications such as capacitor dielectrics. Ferroelectric polymers based on vinylidene fluoride (VDF), trifluoroethylene (TrFE), and chlorotrifluoroethylene (CTFE) exhibit some of the highest permittivities and energy densities among polymers. Energy density in a capacitor is exponentially related to the electric field applied to the dielectric, which is limited by the polymer's electrical breakdown strength. Modest increases in a polymer's breakdown strength could easily double or triple its energy density making this a crucial variable for performance. With the goal of identifying the failure mechanism, the influence of chemical composition on the electrical breakdown strength of these ferroelectric polymers is explored. Electromechanical breakdown is identified as the failure mechanism and experimental results are fitted to modeled predictions. Additionally, the breakdown properties are related to the energy densities of the polymers.
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M3 - Conference contribution
AN - SCOPUS:77955856999
SN - 9780841269941
T3 - ACS National Meeting Book of Abstracts
BT - American Chemical Society - 236th National Meeting and Exposition, Abstracts of Scientific Papers
T2 - 236th National Meeting and Exposition of the American Chemical Society, ACS 2008
Y2 - 17 August 2008 through 21 August 2008
ER -