Enhanced Energy Storage and Suppressed Dielectric Loss in Oxide Core-Shell-Polyolefin Nanocomposites by Moderating Internal Surface Area and Increasing Shell Thickness

被引:133
作者
Fredin, Lisa A. [1 ]
Li, Zhong [1 ]
Ratner, Mark A. [1 ]
Lanagan, Michael T. [2 ]
Marks, Tobin J. [1 ]
机构
[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA
[2] Penn State Univ, Ctr Dielect Studies, Mat Res Inst, University Pk, PA 16802 USA
关键词
OLEFIN POLYMERIZATION; ELECTROCHEMICAL CHARACTERISTICS; FERROELECTRIC POLYMERS; CHEMISORPTION PATHWAYS; METALLOCENE CATALYSTS; HIGH-PERMITTIVITY; METAL-OXIDES; DENSITY; NANOPARTICLES; FABRICATION;
D O I
10.1002/adma.201202183
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Dielectric loss in metal oxide core/Al2O3 shell polypropylene nanocomposites scales with the particle surface area. By moderating the interfacial surface area between the phases and using increasing shell thicknesses, dielectric loss is significantly reduced, and thus the energy stored within, and recoverable from, capacitors fabricated from these materials is significantly increased, to as high as 2.05 J/cm(3).
引用
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页码:5946 / +
页数:9
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