Supercapacitors or electrochemical capacitors are a kind of energy storage devices with the potential of converting to an efficient energy source in the near future. They have high power densities like conventional capacitors with extremely higher energy densities. Supercapacitors are capable of responding to ever-increasing energy needs and fulfilling them in the longer periods at extremely high rates, without vivid decreasing in the amount and rate of transferred energy. This makes them ideal for many applications especially those with high power demands. However, the energy density of supercapacitors is still too low (in comparison with batteries and fuel cells), and prevents them from using in many high-energy applications [1], [2], [3] and [4]. There is a possibility to increase the energy density of supercapacitors by altering the chemical or physical properties of electroactive and electrolyte materials, efficiently designing the electroactive material structure; the way that it attaches to the current collector and the current collector structure itself [5], [6] and [7]. Directly deposition of electroactive material on the current collector makes a strong attachment between current collector and electroactive material and lessens the ohmic resistance of capacitor so reduces the probabilities of voltage drop and capacitance loss during charge and discharge cycles [5]. Three-dimensional (3D) current collectors provide an increased surface area for deposition, which results in obtaining a thinner layer of electroactive material and improves both charge and mass transfer reactions without total decrease of loading mass and energy density. This issue is of considerable importance especially in the case of electrode materials with low electrical conductivity such as most of the metal oxide materials. On the other hand, existence of pores in the bulk of current collector facilitates the electrolyte transference through the electroactive materials and further speeds up the electrochemical reactions and enhances the capacitive behavior [7] and [8].