A new type of triboelectric nanogenerator with self-actuated series-to-parallel electrical interface based on self-synchronized mechanical switches for exponential charge accumulation in a capacitor

摘要: Abstract We present a new concept for impact-based triboelectric nanogenerators (TENG) inspired from the electrostatic machines of 18th century. With this system, electrical energy converted mechanical domain is automatically accumulated in large capacitance without need diodes. Our TENG has three electrodes and self-synchronized/self-actuated switches, which repeatedly connect capacitances system according to their series parallel configurations order reproduce behaviour similar Bennet's charge doubler. The movable freestanding electrode covered with patches that drastically decreases start-up time. output voltage, so harvested energy, increases exponentially until either voltage reaches air dielectric breakdown or saturation occurs because forces become comparable ones. have developed complete numerical model takes into account both able show phenomena due high electromechanical coupling occurring at voltage. This been validated practical experiments where prototype were excited sinusoidal acceleration 0.2 grms 5 Hz. diode-free can be applied any having least one variable capacitor boost mechanical-to-electrical conversion.