G. Ravi

ORCID: 0000-0003-4493-1539
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About
Contact & Profiles
Research Areas
  • Supercapacitor Materials and Fabrication
  • Electrocatalysts for Energy Conversion
  • Advanced battery technologies research
  • Copper-based nanomaterials and applications
  • ZnO doping and properties
  • Advanced Photocatalysis Techniques
  • Gas Sensing Nanomaterials and Sensors
  • Advancements in Battery Materials
  • Nonlinear Optical Materials Research
  • Transition Metal Oxide Nanomaterials
  • Chalcogenide Semiconductor Thin Films
  • Crystallization and Solubility Studies
  • Conducting polymers and applications
  • Quantum Dots Synthesis And Properties
  • Electrochemical Analysis and Applications
  • Photorefractive and Nonlinear Optics
  • Electrochemical sensors and biosensors
  • Magnetic Properties and Synthesis of Ferrites
  • Solid-state spectroscopy and crystallography
  • Ga2O3 and related materials
  • Catalytic Processes in Materials Science
  • MXene and MAX Phase Materials
  • Crystallography and molecular interactions
  • Iron oxide chemistry and applications
  • Solid State Laser Technologies

Alagappa University
2016-2025

Chandigarh University
2022-2024

Centre For Environment Architecture & Human Settlements
2015-2021

King Khalid University
2021

Western Norway University of Applied Sciences
2021

Guangzhou Institute of Energy Conversion
2021

Chinese Academy of Sciences
2021

Shizuoka University
2012-2013

National Institute for Materials Science
2002-2006

Anna University, Chennai
1993-2002

Zn1–xCoxO (x = 0, 0.05, 0.10, and 0.15) nanoparticles (NPs) were synthesized by a coprecipitation method. The crystalline sizes of samples calculated from the powder XRD patterns, which found to decrease with increase cobalt content. FT-IR spectra confirmed Zn–O stretching bands at 468, 456, 452, 461 cm–1 for respective ZnO NPs. SEM images demonstrated distinct flowerlike morphology. photoluminescence all exhibited broad emission in visible range. XPS studies carried out Zn0.90Co0.10O...

10.1021/jp411848t article EN The Journal of Physical Chemistry C 2014-04-07

Pure ZnO and alkaline metal ion (Mg2+, Ca2+, Sr2+ Ba2+)-doped nanoparticles (NPs) were synthesized by the co-precipitation method. The retained wurtzite hexagonal structure, which was confirmed X-ray diffraction studies. micro-strain properties analyzed through Williamson–Hall analysis. oxidation states of elements (C (1s), O Zn (2p), Mg Ca Sr (3d) Ba (3d)) XPS HRSEM studies showed a reduction in thickness nanoflakes from 63 to 47 nm after doping. EDAX determined amount dopant (alkaline...

10.1039/c3tb21068e article EN Journal of Materials Chemistry B 2013-01-01

The great demand for renewable energy has greatly contributed to the development of solar cell industry. Recently, silicon cells have dominated world market. ease processing gives perovskite (PSCs) an advantage over conventional cells. Regular photovoltaics require expensive, multi-step processes accomplished in a specialized ultraclean-chamber facility at elevated temperature (>1000 °C) and highly vacuumed workspace. Hence, researchers industry focused on PSC as rival Despite this, highest...

10.1039/d2ra05957f article EN cc-by RSC Advances 2022-01-01

So far, numerous metal oxides and hydroxides have been reported as an electrode material, a critical component in supercapacitors that determines the operation window of capacitor. Among them, nickel cobalt-based materials are studied extensively due to their high capacitance nature. However, pure phase does not show significant effect on cycle life. The observed XRD results revealed structures obtained Ni(OH)2 Co-Ni(OH)2 hydroxides. congruency peak positions is attributed homogeneity...

10.1039/d0ra01890b article EN cc-by-nc RSC Advances 2020-01-01

The synthesis of nanoparticles has great control over the structural and functional characteristics materials. In this study, CeO2 Ni-CeO2 spherical were prepared using a microwave-assisted method. characterized via thermogravimetry, X-ray diffraction (XRD), Raman, FTIR, scanning electron microscopy (SEM), photoelectron spectroscopy (XPS), vibrating sample magnetometry (VSM) cyclic voltammetry (CV). pure exhibited flake-like morphology, whereas Ni-doped showed morphology with uniform shapes....

10.1039/c6cp08281e article EN Physical Chemistry Chemical Physics 2017-01-01

The growth in energy devices and the role of supercapacitors are increasingly important today's world. Designing an electrode material for using metals that have high performance, superior structure, eco-friendly, inexpensive highly abundant is essentially required commercialization. In this point view, quaternary chalcogenide Cu2NiSnS4 with fascinating marigold flower like microstructured electrodes synthesized different concentrations citric acid (0, 0.05 M, 0.1 M 0.2 M) by employing...

10.1038/s41598-020-75879-9 article EN cc-by Scientific Reports 2020-11-05
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