Sharif Digital Repository

In the first part, trimetallic cobalt-nickel-manganese hydroxide was synthesized using the two-dimensional metal-organic framework Co-ZIF-L, on the three-dimensional and porous structure of nickel film, and its electrochemical performance was investigated. For this purpose, first, the three-dimensional and porous structure of nickel was grown by the electrolytic hydrogen bubble deposition method on copper wire, and then the 2D structure and leaf-like Co-ZIF-L were formed on the 3D-nickel structure by chemical method. In the next step, cobalt-nickel-manganese hydroxide composite was formed in reaction to Co-ZIF-L anion etching in the presence of nickel and manganese ions. Also,... 

The rapid development of portable and wearable electronic devices has necessitated the creation of micro-sized energy storage devices, including micro-supercapacitors. Micro-supercapacitors are ideal energy storage sources for these devices due to their lifetime and optimal power density. Consequently, selecting the appropriate electrode material and developing a simple, low-cost manufacturing method for micro-supercapacitors present significant challenges. Graphene oxide, a key material for these applications, often underperforms due to its porosity and low specific surface area. However, its performance can be enhanced by integrating it with a new class of highly porous materials with a... 

One of the pillars of reaching a steady development is to utilize sustainable energies. In order to make use of these modern means of energy, appropriate energy storage devices are inevitable. One of the families of these devices is the supercapacitors. Moving toward the 4th industrial revolution, we are encountering modern technologies such as internet of things and wearable electronics. Therefore, designing and fabricating microsupercapacitors is of paramount importance in order to reduce the weight and size of these devices. Cobalt and nickel are considered as two important elements to be used in synthesizing supercapacitive materials and composites, because of their good electrochemical...