Structural and electrochemical studies of Scheelite type BiVO4 nanoparticles: synthesis by simple hydrothermal method

BiVO4 nanoparticles (NPs) were prepared sol-gel technique for the potential electrode of supercapacitor applications. The crystal structure, elemental composition, and surface morphology of the synthesized sample were characterized by powder X-ray diffraction (PXRD), scanning electron microscopy and elemental analysis (EDS) spectrum, respectively. The diffraction peaks were well indexed with monoclinic structure. The morphology of the synthesized sample exhibited that small flattened rice shaped structure with the average particle size of ~50 nm. The room temperature capacitive behaviour of BiVO4 NPs electrode was recorded by cyclic voltammetry (CV) in 2 M of KOH electrolyte. The enhance specific capacitance (CSP= 139 F g-1 ) was observed at the scan rate of ~10 mVs-1 . The results show that the as synthesized BiVO4 NPs is a potential candidate for electrochemical supercapacitor application.

Section: (1)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Sol-Gel Derived Bivo4 Nanoparticles for Electrochemical Applications

Nallamuthu¹,

Packiaraj²,

Venkatesh³

et al. 2019

“…With the help of some reported procedures, modified working electrode was fabricated [22,23]. In brief, the as prepared material with the weight ratio of 80%, AC as conducting material was taken in the ratio 15% and 5% PVDF as a binder was used.…”

Section: Modified Electrode Fabricationmentioning

confidence: 99%

Structural, Morphological and Electrochemical Examination of Carbon Spheres Wrapped by Maghemite Nanoparticles

Devendran¹

2019

In this work, pure carbon spheres (CSs) and Mn3O4 nanoparticles (NPs) embedded on carbon sphere were synthesized by hydrothermal method. The prepared CS/Mn3O4 was examined with structural, functional, and morphological properties by XRD, FTIR, and SEM analysis. The average grain size and crystalline size of Mn3O4 coated carbon sphere were found through morphological analysis. The element ratio, composition and distribution of the prepared Mn3O4 coated carbon sphere were analyzed through EDS and Mapping analysis. Electrochemical performance such as redox behavior, charge storage/discharge capacity and resistive nature of Mn3O4 /CSs was evaluated using cyclic voltammetry, chronopotentiometry, and electrochemical impedance spectroscopic analysis.

“…The co-precipitation method performed in room temperature with surfactants and controlled pH is considered to be the easy and effective method to prepare inorganic nanomaterials with desired morphology, size and shape. In past few decades, transition metal vanadate nanoparticles have been attracting due to their applications in energy storage, photo catalysis and energy conversion devices [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Pseudocapacitive Behavioral Testing of Iron Vanadate Nanoparticles Synthesized by Simple Co- Precipitation Method

Arasi¹,

Devendran²,

Ranjithkumar³

et al. 2019

Iron vanadate nanoparticles were prepared by simple co-precipitation method. The crystal structure and elemental composition of prepared material were confirmed using X-ray Diffraction analysis and Elemental Dispersive X- ray spectroscopic analysis respectively. Surface morphology of the sample was analyzed by Scanning Electron Microscopic techniques. Optical absorption and molecular vibrations were studied by UV-Vis. absorption spectroscopy and Fourier Transform Infrared spectroscopic techniques. Electrochemical behaviors such as redox property, charge-discharge mechanism and impedance analysis were examined with cyclic voltammetry, Galvanostatic charge-discharge and electrochemical impedance spectroscopic studies.