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Environmental Energy LAB

Battery / Secondary Battery / H2 Energy / MXene / Laser Plasma

WAVE FUSION LAB

Research Topic

RESEARCH TOPIC 01

Battery / Secondary Battery

Electrochemical energy storage and conversion are involved in everyday life through the application in portable electronics, electric vehicles, and energy storage grids in the form of batteries, supercapacitors, fuel cells, and so on. At EEL, the research group is trying to fill the gap between the fundamental aspects of energy storage and real-time usage in daily life for futuristic applications. The energy storage devices need keen development in the science and interfacial factors of the storage devices for effective utilization. The key areas of energy storage devices designed and developed at EEL are as follows. eover, using various computing logic, we are demonstrating the FeFET-PIM array with a high energy efficiency, which is evaluated by the system-level simulation.

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RESEARCH TOPIC 02

Hydrogen Energy

The world needs solutions for the ever-growing global warming issues due to the rapid utilization of fossil fuels, an eco-friendly and better solution is needed for energy production and utilization. Researchers are taking more efforts to solve the issues, in particular, the production of hydrogen in an eco-friendly way has been regarded as a very important technology that can reduce greenhouse gases. New materials and technologies are in the developing stage for a better and easy way to produce hydrogen. The catalysis process is the driving force for hydrogen production in an eco-friendly way. There are many catalysis technologies were discovered, and many technologies are applied to enhance the efficiency of hydrogen production. These technologies include catalyst surface modification, vacancy control, atomic unit engineering, band engineering with other materials, and surface grafting of co-catalysts. The developed catalysts are applied in hydrogen production systems as a photocatalyst, electrocatalyst, and photo-electrocatalyst to estimate the hydrogen production efficiency. Our research efforts are mainly focused on the 1) development of new catalyst and co-catalyst materials, 2) material structure analysis, and 3) catalyst efficiency evaluation.

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RESEARCH TOPIC 03

MXene

MXenes are a large family of two-dimensional materials with the general formula of Mn+1XnTx (n = 1-4), where M is a transition metal, X is carbon and/or nitrogen, and Tx denotes surface functional groups (-OH, -O, -F, etc.). MXenes exhibit several interesting properties such as metallic electrical conductivity, good aqueous dispersion stability, tunable work function, etc., which expanded their application potential to various fields. However, the spontaneous oxidation of MXene due to interaction with oxygen and water is a critical concern for the long-term storage of synthesized MXene and the ambient stability of MXene-based devices. In addition, good dispersion stability of MXenes is restricted to aqueous medium, which is another concern as most of the solution-based approaches prefer volatile organic solvents. Hence, our research group is mainly devoted to the synthesis of high-quality MXene nanosheets and functionalize their surface with organic molecules, polymers, nanomaterials to obstruct the spontaneous oxidation of MXenes as well as to enable the excellent dispersion stability in various organic solvents. Further, we test the application potential of developed high quality aqueous and organic solvent-based MXene inks in various fields such as Photodetectors, Printed Electronics (logic gates and memory cells), E-textiles/Hydrogels for sensing applications, etc.

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RESEARCH TOPIC 04

Laser Plasma

The global energy crisis is increasing the demand for innovative materials with high purity and functionality for the development of clean energy production and storage. The development of novel photo- and electrocatalysts significantly depends on synthetic techniques that facilitate the production of tailored advanced nanomaterials. The emerging use of pulsed laser in liquid synthesis has attracted immense interest as an effective synthetic technology with several advantages over conventional chemical and physical synthetic routes, including the fine-tuning of size, composition, surface, and crystalline structures, and defect densities and is associated with the catalytic, electronic, thermal, optical, and mechanical properties of the produced nanomaterials. Herein, we present an overview of the fundamental understanding and importance of the pulsed laser process, namely various roles and mechanisms involved in the production of various types of nanomaterials, such as metal nanoparticles, oxides, non-oxides, and carbon-based materials. We mainly cover the advancement of photo- and electrocatalytic nanomaterials via pulsed laser-assisted technologies with detailed mechanistic insights and structural optimization along with effective catalytic performances in various energy and environmental remediation processes. Finally, the future directions and challenges of pulsed laser techniques are briefly underlined. This study can exert practical guidance for the future design and fabrication of innovative pulsed laser-induced nanomaterials with fascinating properties for advanced catalysis applications.

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