Nanowerk April 25, 2022
An international team of researchers (North Korea, Australia, India) has demonstrated both energy harvesting and storage devices such as piezoelectric nanogenerator (PNG) and piezo supercapacitor (PSC) by enforcing coconut husk (CH) as a filler into the polymer separator. The CH powder was immobilized into the polyvinyl difluoride (PVDF) matrix to improve its piezoelectric performance. The poled PNG with a 7 wt% of CH powder/ PVDF composition delivered an output of 14 V, 50 nA current, and a power density of 0.35 ÎĽW/cm2 at 100 MΩ. The output is enough to charge commercial capacitors and power electronic devices. The PVDF/CH piezoelectric separator was sandwiched between graphene electrodes to develop a supercapacitor. The device achieved a maximum power density and an energy density significantly higher than other graphene/PVDF-based devices. According to the researchers the work paves the way towards a circular economy and sustainability…read more. TECHNICAL ARTICLEÂ
Graphical abstract. Credit: Sustainable Materials and Technologies, Volume 32, July 2022, e00396Â