Design of Novel Supercapacitor Electrodes Utilizing Click Chemistry and Metal-Organic Frameworks

A chemistry research group led by Dr. Abdollah Salimi at the University of Kurdistan has developed an innovative strategy for designing advanced supercapacitor electrodes. The outcomes of this study have been published in the prestigious international Journal of Energy Storage (Elsevier). Focusing on the development of highly efficient materials for energy storage systems, this study smartly combines several advanced approaches in materials engineering to introduce a novel multi-layered architecture designed to enhance the performance of symmetric supercapacitors.

In this research, metal-organic frameworks (MOFs) play a pivotal role in structural design. The researchers utilized MOFs as an engineered interfacial layer, providing an ordered and active substrate for anchoring various electrode components. The presence of azide groups in the MOF structure enables the utilization of click chemistry—a highly precise and selective approach in modern chemistry used to establish stable covalent bonds between nanostructured components. In this system, the click reaction between the azide groups in the MOF and the alkyne bonds in the graphdiyne (GDY) nanolayers forms robust covalent linkages, effectively stabilizing the GDY layer onto the surface of nickel foam. This targeted bonding not only enhances the structural integrity of the system but also improves electron and ion transport pathways.

Directly grown upon this engineered substrate are layers of molybdenum-doped trimetallic nickel-cobalt-manganese layered double hydroxides (LDHs), creating a hierarchical structure with a high active surface area. The synergy between Faradaic pseudocapacitive reactions and electric double-layer capacitance (EDLC) significantly boosts the electrochemical performance of the electrode. Electrochemical evaluations demonstrate that this multi-component architecture exhibits fast charge transfer kinetics, improved electrical conductivity, and high cyclic stability, achieving remarkable energy density alongside excellent power output. This achievement highlights the growing research capabilities of the Department of Chemistry at the University of Kurdistan in the fields of advanced materials and clean energy storage systems.