A5060875153- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced battery technologies research
- Perovskite Materials and Applications
- Thermal Expansion and Ionic Conductivity
- Advanced Battery Technologies Research
- Catalytic Processes in Materials Science
- Gas Sensing Nanomaterials and Sensors
- Advanced Materials Characterization Techniques
- Machine Learning in Materials Science
- Layered Double Hydroxides Synthesis and Applications
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Electrocatalysts for Energy Conversion
- Quantum Dots Synthesis And Properties
- Advanced ceramic materials synthesis
- Tribology and Wear Analysis
- Advancements in Solid Oxide Fuel Cells
- Electronic and Structural Properties of Oxides
- Advanced materials and composites
Rensselaer Polytechnic Institute
2021-2025
Central Glass and Ceramic Research Institute
2017
Banaras Hindu University
2016
The non-toxic and stable chalcogenide perovskite BaZrS3 fulfills many key optoelectronic properties for a high-efficiency photovoltaic material. It has been shown to possess direct band gap with large absorption coefficient good carrier mobility values. With reported of 1.7-1.8 eV, is candidate tandem solar cell materials; however, its significantly larger than the optimal value single-junction (∼1.3 Shockley-Queisser limit)─thus doping required lower gap. By combining first-principles...
Chalcogenide perovskites (such as BaZrS3) are gaining increasing attention for solar cells due to their lead-free nature and superior environmental stability. However, a major limitation of BaZrS3 is that its bandgap (∼1.75 eV) significantly larger than the ideal (∼1.34 required achieve maximum theoretical efficiency single-junction photovoltaic cell. In this study, we demonstrate reduction in from 1.75 1.4 eV through situ alloying titanium (Ti) during chemical vapor deposition growth,...
Among intercalation, alloying, and conversion battery chemistries, the intercalation chemistry is most widely used in commercial applications due to its superior reversibility, round trip efficiency, stability, albeit at expense of reduced specific capacity. While hosts for monovalent ions (e.g., lithium sodium) are well developed, jury still out on best available host materials multivalent such as magnesium, zinc, calcium, aluminum. In systems, it challenging find electrode that can act a...
Abstract A conversion‐chemistry‐based zinc–selenium aqueous battery is reported that delivers high specific capacity, good rate capability, and excellent cycle life. In this work, an electronically conjugated covalent triazine framework used to physicochemically lock selenium (Se 8 ) clusters. As a control sample, the traditional melt‐diffusion approach physically Se . While melt‐diffused cathode exhibited precipitous drop in capacity with cycling, locked can be cycled stable manner...
Driven by the cost and scarcity of Lithium resources, it is imperative to explore alternative battery chemistries such as those based on Aluminum (Al). One key challenges associated with development Al-ion batteries limited choice cathode materials. In this work, we an open-tunnel framework-based oxide (Mo3VOx) a in battery. The orthorhombic phase molybdenum vanadium (o-MVO) has been tested previously but shown poor coulombic efficiency rapid capacity fade. Our results for o-MVO are...
The instability of Nickel (Ni)-rich cathodes at high voltage is a critical bottleneck toward developing superior lithium-ion batteries. This driven by cathode-electrolyte side reactions, causing rapid degradation, and compromising the overall cycle life. In this study, protective coating using dispersed "magnetite (FeO.Fe
Aqueous Aluminum (Al)-metal batteries are impractical due to a passivating Al2O3 layer on Al-metal that impedes Al3+ diffusion. To overcome this challenge, an oxide interface is thin enough allow facile transport, while also the highly reactive Al-metal/water needed. Here, we report Al-based high entropy alloy satisfies these conflicting requirements. First-principles calculations indicate Al atoms in solid-solution give up electrons neighboring elements, thermodynamically suppressing...
Abstract Looming concerns regarding scarcity, high prices and safety threatens the long-term use of lithium in energy storage devices. Calcium has been explored batteries because its abundance low-cost, but larger size higher charge density calcium-ions relative to impairs diffusion kinetics cyclic stability. In this work, an aqueous calcium-ion battery is demonstrated using orthorhombic, trigonal tetragonal polymorphs molybdenum vanadium oxide (MoVO) as a host for calcium ions. Orthorhombic...