A5074891206- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced Battery Technologies Research
- Leprosy Research and Treatment
- Advanced battery technologies research
- Graphene research and applications
- Extraction and Separation Processes
- Ferroelectric and Piezoelectric Materials
- Transition Metal Oxide Nanomaterials
- Hematological disorders and diagnostics
- ZnO doping and properties
- Pharmacological Effects and Toxicity Studies
- Semiconductor materials and devices
- Electrical and Thermal Properties of Materials
- Nail Diseases and Treatments
- Conducting polymers and applications
- Thermal Expansion and Ionic Conductivity
- Gas Sensing Nanomaterials and Sensors
- Dupuytren's Contracture and Treatments
- Multiferroics and related materials
- Mosquito-borne diseases and control
- Fuel Cells and Related Materials
- Advanced NMR Techniques and Applications
- Silicon and Solar Cell Technologies
Stony Brook University
2019-2023
National Chemical Laboratory
2022
Stony Brook Medicine
2021
State University of New York
2021
National Center for Disease Control
2016-2018
CIC energiGUNE
2013-2017
Parque Tecnológico de la Salud
2014-2016
National Renewable Energy Centre
2013-2015
University of Puerto Rico System
2011-2013
Indian Institute of Technology Roorkee
2009-2010
Earth-abundant Na<sub>0.67</sub>[Mn<sub>1−x</sub>Mg<sub>x</sub>]O<sub>2</sub> (0 ≤ <italic>x</italic> 0.2) cathode materials with the P2 structure have been synthesized as positive electrodes for sodium-ion batteries.
All-solid-state batteries including a garnet ceramic as electrolyte are potential candidates to replace the currently used Li-ion technology, they offer safer operation and higher energy storage performances. However, development of faces several challenges at electrode/electrolyte interfaces, which need withstand high current densities enable competing C-rates. In this work, we investigate limits anode/electrolyte interface in full cell that includes Li-metal anode, LiFePO4 cathode,...
Mg substitution of a (sustainable) sodium-ion battery positive electrode material results in faster Na-ion motion and fewer structural changes on cycling.
Magnesium substituted P2-structure Na0.67Ni0.3Mn0.7O2 materials have been prepared by a facile solid-state method and investigated as cathodes in sodium-ion batteries. The Mg-doped described here were characterized X-ray diffraction (XRD), 23Na nuclear magnetic resonance (SS-NMR), scanning electron microscopy (SEM). electrochemical performance of the samples was tested half cells vs Na metal at room temperature. operate high average voltage ca. 3.3 V Na/Na+ delivering specific capacities...
Phase transitions occurring during the (de)intercalation of Na in Na<sub>2/3</sub>[Fe<sub>1/2</sub>Mn<sub>1/2</sub>]O<sub>2</sub> have been examined by using <italic>in situ</italic> XRD and Raman Spectroscopy along with <italic>ex NMR.
Developing scalable energy storage systems with high and power densities is essential to meeting the ever-growing portable electronics electric vehicle markets, which calls for development of thick electrode designs improve active material loading greatly enhance overall density. However, rate capabilities in lithium-ion batteries usually fall off rapidly increasing thickness due hindered ionic transport kinetics, especially issue conversion-based electroactive materials. To alleviate...
Sodium-ion batteries are considered as a favorable alternative to the widely used lithium-ion for applications such grid-scale energy storage. However, meet density and reliability that is necessary, electrodes structurally stable well characterized during electrochemical cycling need be developed. Here, we report on how applied discharge current rate influences structural evolution of Na0.67Mn0.8Mg0.2O2 electrode materials. A combination ex situ in X-ray diffraction (XRD) data were probe...
0.5Li2MnO3-0.5LiMn0.5Ni0.5O2 composite cathode material with and without ZnO treatment has been synthesized using carbonate based co-precipitation method for rechargeable lithium ion battery. The X-ray diffraction study confirms that the layered LiNi0.5Mn0.5O2 structure along formation of superlattice ordering Li2MnO3; any major change in crystal treatment. Raman spectroscopy revealed two different types ionic arrangements corresponding to space groups C2/m Rm Li2MnO3 respectively....
The effect of Cr-doping on the structural, physical and electrochemical properties Li2MnO3 LiNi0.5Mn0.5O2 is reported. formation solid solution local distortion structure with increase in Cr doping (0.7Li2MnO3 − 0.3LiNi0.5Mn0.5O2) was confirmed respectively, by X-Ray diffraction Raman spectroscopy. Morphological investigations elemental mapping showed primary particles range 0.5–1.0 μm homogeneity, respectively. Electrochemical measurements materials were carried out different voltage ranges...
A very simple approach for the preparation of flexible free-standing Sn-based graphene composites and their use as binder-free anodes lithium ion batteries is reported.
Here we report on technology developments implemented into the Graphene Flagship European project for integration of graphene and graphene-related materials (GRMs) energy application devices. Many technologies investigated so far aim at producing composite associating or GRMs with either metal semiconducting nanocrystals other carbon nanostructures (e.g., CNT, graphite). These composites can be used favourably as hydrogen storage solar cell absorbers. They also provide better performing...
Silicon-reduced graphene oxide (Si-rGO) composites processed as self-standing aerogels (0.2 g cm-3) and films (1.5 have been prepared by the thermal reduction of formed between silicon nanoparticles a suspension (GO) in ethanol. The characterization samples different techniques (X-ray diffraction, Raman, thermogravimetric analysis, scanning electron microscopy) show that both cases are rGO sheets homogeneously decorated with 50 nm contents ∼40% wt. performances these materials were tested...
Sodium vanadate (Na1+xV3O8 or NVO) has recently attracted significant interest as a potential cathode material for an aqueous Zn ion battery its unique pillared framework facilitating migration. Here, we performed detailed study on reaction mechanisms of hydrated Na2V6O16·2H2O slabs and nonhydrated Na1.25V3O8 nanorods using transmission electron microscopy. Our initial observation reveals that the thin (30–50 nm) system successfully undergoes discharge with insertion into structure while...
The reduction and subsequent oxidation of silver hollandite nanorods, Ag1.5Mn8O16, were explored in aqueous ZnSO4 electrolyte for the first time. impact on electrodes was probed where images recovered cathodes collected to evaluate changes morphology, structural, electrochemical properties as a function varying potential. Ag metal particle formation upon observed through reduction-displacement reaction confirmed by SEM/EDS, XRD, XAS results accompanied decrease charge transfer impedance,...