Indian researchers develop new method to improve MOF supercapacitors
A new approach to improve the performance of MOF-based supercapacitors has been developed by researchers at the Institute of Nano Science and Technology (INST), Mohali. This laser-based technique allows for the controlled introduction of defects into the material, increasing its energy storage capabilities. The method could offer a significant improvement over traditional methods used for creating defects, such as thermal annealing, chemical exposure and ball milling, which were not precise enough.
How Laser Technology Improves MOF-Based Supercapacitors
In this innovative approach, Prof Vivek Bagchi and his team at INST used laser irradiation to create defects and porosity in the CuZn-BTC MOF. By carefully adjusting the laser power, they were able to increase the surface area of the electrode without changing the crystal structure of the Metal Organic Framework (MOF). The details of the study were published in the journal ACS Materials Letter.
This precise tuning improves the material’s performance by enabling better ion diffusion and improved energy storage. The pores generated in the three-dimensional MOF structure allow ions to travel more efficiently, significantly improving the device’s energy storage capacity.
Traditional methods of creating defects tend to transform the material or create composite structures, which reduces efficiency. However, this laser method preserves the original crystallinity of the MOF while improving its electrochemical properties. Upon exposure to laser, some bonds in the CuZn MOF break, creating pores that improve ion diffusion while keeping the overall structure intact.
Environmental and performance benefits
In addition to improve energy storage, the laser process is faster, cleaner and more environmentally friendly than conventional approaches. It eliminates the need for chemical solvents, making the process both safer and faster. The findings, published in ACS Materials Letter, highlight the potential for applying this method to other MOF materials to improve performance in energy storage technologies.
