The rapid development of portable electronics requires.Miniaturized and compact energy storage devices with high.Energy densities and long lifetime. For most line-powered.Electronics alternating, current (AC) line-filters are used to.Smooth the leftover ripples on direct current voltage busses at.120 Hz (the double value of Sixty-Hz AC power the United,,States standard). However the low, specific capacitances and.Bulky sizes of widely used commercial aluminum electrolytic.Capacitors (AECs) for AC line-filtering are supposed to hinder.Their practical applications in future electronics.
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