Rokaya et al. reported the fabrication of flexible, printed polymer electrolytic capacitors and their implementation in printed electronics applications such as filtering, rectification and energy harvesting and storage. Capacitors were fabricated by depositing conductive polymer PEDOT:PSS onto porous anodized aluminum foil and yielded specific capacitance of 1µFcm-2. In this work, they have used printed polymer electrolytic capacitors to implement an RC (Resistor capacitor) first order 1.03 kHz passive low pass filter, a full wave bridge rectifier circuit and a piezo-transducer energy harvester. An integrated full wave bridge rectifier based on these devices shows an efficiency of 80.5% at 1 kHz and when integrated with a vibration-motion based flexible piezoelectric transducer, the devices are able to generate and store about 1 mJ energy.