The technology is a flexible, lightweight and solid-state supercapacitor made of conducting polymer and metal oxide composite thin film electrodes. The composite electrodes of conducting polymer and metal oxide are considered to be the most promising materials as supercapacitor electrodes due to their low cost, ease of synthesis and high capacitive characteristics. The composite electrode exhibits good structural and electrochemical stability, good conductivity, high reversibility, and thermal stability to boost the overall performance of the supercapacitor device. Nanostructured electrodes provide higher surface area and more participation in the redox reaction due to rapid ion diffusion and thus, could deliver a higher capacitance leading to a better device. The simplicity of the process can lead to a viable larger production of flexible, bendable and portable energy storage devices with many applications.
Electrochemical supercapacitors have generated significant interest due to the explosive growth of digital transportation and communications. The supercapacitor device made of nanocomposite electrodes was fabricated on flexible substrates using chemical and electrochemical co-deposition techniques. The use of transition metal oxide and conducting polymers results in higher energy density than electric double-layer capacitors (EDLC), fast charging and discharging rate, safer operation, and good cycling stability.
Developed further, this flexible supercapacitor would enable manufacturers to create a line of flexible products with a fast-charging feature. The technology is also envisioned to support consumer demand and industry requirements for: Portable electronic devices Flexible electronic devices Flexible digital displays and windows Integrated power sources Digital transportation and communications
Energy-efficient: High energy capability with shorter charging time Long cycle life: Reversibility and long charging and discharging cycles Lightweight: Uses thin electrode and substrate Flexible: Polymer-based composite electrode with good mechanical stability Cost-effective: Uses thin film deposition technology that is simple and direct