scholarly journals Dielectric and Optical Band Gap Studies of Nanostructured Manganese Nickel Oxide and Cobalt Nickel Oxide

2017 ◽  
Vol 33 (3) ◽  
pp. 1581-1588
Author(s):  
C. R. Indulal ◽  
R. Biju ◽  
Deepak Nand ◽  
R. Raveendran
Keyword(s):  
Nickel Oxide ◽  
Band Gap ◽  
Optical Band Gap ◽  
Cobalt Nickel ◽  
Cobalt Nickel Oxide

Uncooled bolometer for millimeter-wave detection using manganese-cobalt-nickel-oxide thin film

2020 ◽  
Vol 13 (12) ◽  
pp. 124002
Author(s):  
Tao Hu ◽  
Wanli Ma ◽  
Jing Wu ◽  
Zhibo Zhang ◽  
Wei Zhou ◽  
...  
Keyword(s):  
Thin Film ◽  
Nickel Oxide ◽  
Millimeter Wave ◽  
Oxide Thin Film ◽  
Wave Detection ◽  
Cobalt Nickel ◽  
Cobalt Nickel Oxide ◽  
Nickel Oxide Thin Film

Spectroscopic, Structural, and Morphology of Nickel Oxide Nanoparticles Prepared Using Physalis angulata Leaf Extract

2018 ◽  
Vol 917 ◽  
pp. 167-171 ◽  
Author(s):  
Najmawati Sulaiman ◽  
Yoki Yulizar
Keyword(s):  
Electron Microscopy ◽  
Particle Size ◽  
Nickel Oxide ◽  
Band Gap ◽  
Leaf Extract ◽  
Optical Band Gap ◽  
Oxide Nanoparticles ◽  
Nickel Oxide Nanoparticles ◽  
Microscopic Studies ◽  
Nio Nps

Green synthesis of nickel oxide nanoparticles (NiO NPs) usingPhysalisangulataleaf extract (PALE) as weak base sources and stabilizing agents has been reported. Chemical bonding and vibration spectroscopy, crystallographic structure, optical band gap, particle size and microscopic studies of NiO NPs were also investigated. Ni-O vibration modes of NiO NPs were analyzed by FTIR and Raman instrument at ~400 and ~900 cm-1wavenumber. XRD pattern of NiO NPs confirmed cubic crystal structure with space groupFm-3m.Optical band gap of NiO NPs determined by using Tauc plot method was about 3.42 eV. Particle size analyzer showed size distribution of NiO NPs was 64.13 nm which confirm NiO formed in nanoscale. Electron microscopic studies of NiO NPs were observed by using scanning electron microscopy and transmission electron microscopy.

scholarly journals Cobalt–Nickel Oxides with Three-Dimensional Hexagon Films for High Performance Supercapacitors

NANO ◽  
2018 ◽  
Vol 13 (03) ◽  
pp. 1850032 ◽  
Author(s):  
Yinan Lv ◽  
Guixia Dong ◽  
Lei Li ◽  
Jingrui Kang ◽  
Weidan Han
Keyword(s):  
Nickel Oxide ◽  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Nickel Ions ◽  
Cobalt Nickel ◽  
Nickel Oxide Electrode ◽  
Cobalt Nickel Oxide

Cobalt–nickel oxide electrode materials with three-dimensional hexagon films or flower-shaped structures have been synthesized by a chemical precipitation method at different thermal decomposition temperatures. Nickel ions enter into the lattice of Co3O4 by forming solid solution and promote primary nanoparticles partly self-assemble into three-dimensional hexagon films which interlace with each other to form a flower-like structure. Consequently, cobalt–nickel oxide with a Ni/Co mole ratio of 1:6 at 220[Formula: see text]C displays a highest capacitance of 796.16[Formula: see text]F/g at 200[Formula: see text]mA/g and cobalt–nickel oxide with a Ni/Co mole ratio of 1:3 at 200[Formula: see text]C exhibits a highest capacitance of 290[Formula: see text]F/g at 10[Formula: see text]A/g, which significantly improve the electrochemical properties of Co3O4.

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