333 - Rationally designed poly(dimethyltin glutarate) as a high dielectric organometallic polymer for energy storage applications
Aaron F Baldwin1, firstname.lastname@example.org, Rui Ma1, Arun Kumar M.K.2, Tran Doan Huan2, Chenchen Wang2, Jolanta Marszalek3, Mukerrem Cakmak3, Ramamurthy Ramprasad2, Gregory A Sotzing4. (1) Polymer Program, University of Connecticut, Storrs, Connecticut 06269, United States, (2) Department of Materials Science and Engineering, University of Connecticut, Storrs, Connecticut 06269, United States, (3) Department of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States, (4) Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
Tenets support the construction of large capacitor banks to provide the power needed for modern electrochemical devices currently being constructed, such as rail guns and the electromagnetic aircraft launch system (EMALS). The industrial standard for the dielectric material incorporated into high energy density capacitors is biaxially oriented polypropylene (BOPP), which has an energy density of 5 Jcm-3 at a breakdown of 720 Vμm-1, with a dielectric constant of 2.5 and a dielectric loss as low as 0.01%. As a consequence of BOPP's low dielectric constant, much research has been focused on replacement materials with increased dielectric constant and thermal stability >100oC while maintaining dielectric loss, energy density and breakdown exhibited by BOPP. Herein we present the rational design, synthesis and characterization of an organometallic polymer, poly(dimethytin glutarate). Density functional theory (DFT) is applied to model the polymer's theoretical dielectric constant (ε = 6.04), band gap (Eg = 6.14 eV) , stable crystal structure and IR spectrum. Comparison of the computed values and spectra to the experimental measurements of poly(dimethyltin glutarate) show a direct correlation. The measured dielectric constant was ε = 7.39 with an Eg = 4.88 eV while the IR and XRD spectra confirm the presence of the four most stable crystal structures in varying proportion dependent upon processing conditions. This work demonstrates the first organometallic polymer as a high dielectric material for energy storage.
Tuesday, March 18, 2014 05:30 PM
General Topics: New Synthesis and Characterization of Polymers (05:30 PM - 07:30 PM)
Location: Dallas Convention Center
Room: Hall A