Lisa A. Fredin, Zhong Li, Michael T. Lanagan, Mark A. Ratner and Tobin J. Marks Substantial Recoverable Energy Storage in Percolative Metallic Aluminum-Polypropylene Nanocomposites Advanced Functional Materials
Al-polypropylene nanocomposites are promising pulse-power capacitor materials, with resistivities of ≈ 1012–1015 Ω·cm, low dielectric loss in the 100 Hz–1 MHz frequency range, and recoverable energy storage as high as 14.4 J/cm3. These conductive-insulator composites obey the percolation law for two-phase composites, reaching maximum permittivity values, ϵr, as high as 15.4 before the percolation threshold volume fraction, vf = 0.16.
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