A5041200499- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced battery technologies research
- MXene and MAX Phase Materials
- 2D Materials and Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Sensor and Energy Harvesting Materials
- Chalcogenide Semiconductor Thin Films
- Advanced Photocatalysis Techniques
- Covalent Organic Framework Applications
- CO2 Reduction Techniques and Catalysts
- Heusler alloys: electronic and magnetic properties
- Electrocatalysts for Energy Conversion
- Polyoxometalates: Synthesis and Applications
- Supercapacitor Materials and Fabrication
- Iron-based superconductors research
- Conducting polymers and applications
University of Illinois Chicago
2019-2022
Abstract Metal–organic frameworks (MOFs) are promising materials for electrocatalysis; however, lack of electrical conductivity in the majority existing MOFs limits their effective utilization field. Herein, an excellent catalytic activity a 2D copper (Cu)‐based conductive MOF, tetrahydroxyquinone (CuTHQ), is reported aqueous CO 2 reduction reaction (CO RR) at low overpotentials. It revealed that CuTHQ nanoflakes (NFs) with average lateral size 140 nm exhibit negligible overpotential 16 mV...
Lithium-CO2 batteries are attractive energy-storage systems for fulfilling the demand of future large-scale applications such as electric vehicles due to their high specific energy density. However, a major challenge with Li-CO2 is attain reversible formation and decomposition Li2 CO3 carbon discharge products. A fully battery developed overall neutrality using MoS2 nanoflakes cathode catalyst combined an ionic liquid/dimethyl sulfoxide electrolyte. This combination materials produces...
Abstract High‐entropy alloys combine multiple principal elements at a near equal fraction to form vast compositional spaces achieve outstanding functionalities that are absent in with one or two elements. Here, the prediction, synthesis, and multiscale characterization of 2D high‐entropy transition metal dichalcogenide (TMDC) four/five metals is reported. Of these, electrochemical performance five‐component alloy highest configurational entropy, (MoWVNbTa)S 2 , investigated for CO conversion...
Abstract Transition metal dichalcogenide (TMDCs) alloys could have a wide range of physical and chemical properties, ranging from charge density waves to superconductivity electrochemical activities. While many exciting behaviors unary TMDCs been demonstrated, the vast compositional space TMDC has remained largely unexplored due lack understanding regarding their stability when accommodating different cations or chalcogens in single‐phase. Here, theory‐guided synthesis approach is reported...
Abstract Redox meditators (RMs) are soluble catalysts located in an electrolyte that can improve the energy efficiency (reduced overpotential) and cyclability of Li–oxygen (Li–O 2 ) batteries. In this work, 20 RMs within a Li–O system with dimethyl sulfoxide tetraethylene glycol ether electrolytes studied their electrochemical features such as redox potential, separation cathodic anodic peaks, current intensities measured using cyclic voltammetry (CV) experiments. Six selected “primary”...
Abstract Lithium–oxygen (Li–O 2 ) batteries possess the highest theoretical energy density (3500 Wh kg −1 ), which makes them attractive candidates for modern electronics and transportation applications. In this work, an inexpensive, flexible, wearable Li–O battery based on bifunctional redox mediator of InBr 3 , MoS cathode catalyst, Fomblin‐based oxygen permeable membrane that enable long‐cycle‐life operation in pure oxygen, dry air, ambient air is designed, fabricated, tested. The...
Lithium-oxygen batteries are among the most attractive alternatives for future electrified transportation. However, their practical application is hindered by many obstacles. Due to insulating nature of Li2 O2 product and slow kinetics reactions, attaining sustainable low charge overpotentials at high rates becomes a challenge resulting in battery's early failure round trip efficiency. Herein, outstanding characteristics discovered conductive metal organic framework (c-MOF) that promotes...
Redox mediators (RMs) are solution-based additives that have been extensively used to reduce the charge potential and increase energy efficiency of Li–oxygen (Li–O2) batteries. However, in presence RMs, achieving a long cycle-life operation Li–O2 batteries at high current rate is still major challenge. In this study, we discover novel synergy among InX3 (X = I Br) bifunctional molybdenum disulfide (MoS2) nanoflakes as air electrode, dimethyl sulfoxide/ionic liquid hybrid electrolyte, LiTFSI...
Abstract Li‐air batteries are considered strong candidates for the next‐generation energy storage systems designed electrical transportation. However, low cyclability and current rates two major drawbacks that hinder them from further realization. These issues necessitate discovery of novel materials to significantly enhance redox process discharge products. In this study, a catalytic system comprised tin sulfide (SnS) nanoflakes as solid catalyst iodide (SnI 2 ) dual‐functional electrolyte...
Abstract 1D materials, such as nanofibers or nanoribbons are considered the future ultimate limit of downscaling for modern electrical and electrochemical devices. Here, first time, a solid solution transition metal trichalcogenide (TMTC), Nb 1‐ x Ta S 3 , successfully synthesized with outstanding electrical, thermal, characteristics rivaling performance the‐state‐of‐the art materials each application. This material shows nearly unchanged sheet resistance (≈740 Ω sq −1 ) versus bending...
The rechargeable lithium-oxygen (Li-O2) battery has the highest theoretical specific energy density of any batteries and could transform storage systems if a practical device be attained. However, among numerous challenges, which are all interconnected, polarization due to sluggish kinetics, low cycle life, small capacity, slow rates. In this study, we report on use KMnO4 generate colloidal electrolyte made up MnO2 nanoparticles. resulting provides redox mediator for reducing charge...