Fishery waste-driven piezo-capacitor as unprecedented energy conversion and storage for real-time monitoring device

Abstract

The single-device mechanism of energy conversion and storage is highly needed for continuously running electronic devices. It is not only for the conversion and storage of mechanical energy into electricity; it gives a solution for environmental problems. The development of the integrated device has attracted much attention due to its minimum space requirement, zero energy loss, and cost in power management. Here we analyzed the integrated function of simultaneous mechanical energy harvesting and storage devices using treated fish bones as an electrode and fins with scales as a piezo separator. This method it makes possible to benefit from the conductive network of the integrated device. The excessively fast self-charging properties of the device were analyzed by a mechanical-driven modulator. The smart capacitor delivers excellent specific capacitance, fast charging, and good cyclic stability at a continuous mechanical pressing (500 s) and it reaches 1.32 V in 10 s, with an outstanding current output of 7 mA. Moreover, impressive charging for mobile phones and smart watches can be achieved from the assembled 7 devices at a shoe heal. This work delivers an innovative approach to developing a comfortable, sustainable energy storage device for continuous monitoring sensors.