High‐Volumetric Performance Aligned Nano‐Porous Microwave Exfoliated Graphite Oxide‐based Electrochemical Capacitors

With the fast growing demand for portable electronic devices, there has been a desire to design and fabricate miniaturized energy storage devices that can simultaneously deliver high energy and power. Since supercapacitors or electric double layer capacitors (EDLCs) fi ll a gap between conventional dielectric capacitors (high power density, low energy density) and batteries (high energy density, low power density), they have attracted much attention in recent years for a variety of energy storage applications ranging from memory back-up to consumer electronics to industrial power supplies. [ 1–3 ] They store electrical energy in a double layer interface that is usually composed of a very high surface area conductive material such as carbon materials and aqueous or organic electrolytes. [ 4 ] The high specifi c surface area allows the storage of large amounts of charge in the double layer for a given weight and volume of the device that results in the moderate energy and large power density of supercapacitors. Consequently, numerous studies