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通过调节内比表面积和增加壳层厚度来提高氧化物核-壳-聚烯烃纳米复合材料的储能性能和抑制介电损耗。

Enhanced energy storage and suppressed dielectric loss in oxide core-shell-polyolefin nanocomposites by moderating internal surface area and increasing shell thickness.

机构信息

Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA.

出版信息

Adv Mater. 2012 Nov 20;24(44):5946-53. doi: 10.1002/adma.201202183. Epub 2012 Aug 27.

DOI:10.1002/adma.201202183
PMID:22927288
Abstract

Dielectric loss in metal oxide core/Al(2)O(3) 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).

摘要

金属氧化物芯/Al(2)O(3)壳聚丙烯纳米复合材料的介电损耗与颗粒表面积成正比。通过调节相间的界面表面积并使用较厚的壳层，可以显著降低介电损耗，从而显著提高由这些材料制成的电容器所储存和可回收的能量，高达 2.05 J/cm(3)。

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