High-dielectric polymer composite materials from a series of mixed-metal phenylphosphonates, ATi(C6H5PO3)3 for dielectric energy storage

Peter Barber; Perry J Pellechia; Harry J Ploehn; H-C zur Loye

doi:10.1021/am1003987

High-dielectric polymer composite materials from a series of mixed-metal phenylphosphonates, ATi(C6H5PO3)3 for dielectric energy storage

ACS Appl Mater Interfaces. 2010 Sep;2(9):2553-9. doi: 10.1021/am1003987.

Authors

Peter Barber¹, Perry J Pellechia, Harry J Ploehn, H-C zur Loye

Affiliation

¹ Department of Chemistry and Biochemistry, University of South Carolina, South Carolina 29208, USA.

PMID: 20804129
DOI: 10.1021/am1003987

Abstract

We report the preparation of new polymer composite dielectric materials for energy storage applications. New layered 1:1 mixed A+2/Ti4+ metal phenylphosphonates, ATi(O3PC6H5)3, A=Mg, Ca, Sr, Ba, and Pb, have been prepared via a melt route, in which mixed metal oxides, ATiO3, were reacted with molten phenyl phosphonic acid. The mixed-metal phosphonates were combined with polystyrene (PS) via a solution route and cast as thin films for dielectric permittivity measurements. The ATi(O3PC6H5)3-PS composites exhibit a substantial enhancement in the dielectric permittivity as a function of weight loading relative to the parent ATiO3-PS composites. For both ATiO3-PS and ATi(O3PC6H5)3-PS, the composites' dielectric permittivity increases with A cation polarizability. Unusually large increases for 40 wt% ATi(O3PC6H5)3-PS composites (A=Sr, Ba, and Pb) indicate permittivity enhancement that goes beyond the effect of varying filler composition.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Electric Capacitance*
Electric Power Supplies*
Energy Transfer
Equipment Design
Equipment Failure Analysis
Metals / chemistry*
Organophosphonates / chemistry*
Polymers / chemistry*

Substances

Metals
Organophosphonates
Polymers