ABSTRACT
Design and fabrication of high performance energy storage devices are important to meet the requirements of future electronic devices. Supercapacitors have many advantages over Li batteries, such as high power density, life cycle, rate capability, eco-friendly, flexible and foldable nature. Strategies such as using of novel electroactive materials and hybrid electrode architectures are employed for improving the performance of a supercapacitor. Designing porous nanostructured electrodes is one of the ways to improve the performance of these devices. These nanoporous architectures provide higher electroactive sites which contribute to higher electron and ion conductivity during redox reaction. This chapter discusses about the design, fabrication and mechanism of porous three dimensional metal oxide frame works of MCo2O4 (M: Ni, Zn)) on nickel foams as well as in flat substrates through dynamic hydrogen bubble templated cathodic deposition method.
