A Thin Film of an Ni–NiO Heterogeneous System   for an Optical Recording Medium

Iida, Atsuko; Nishikawa, R.

doi:10.1143/jjap.33.3952

Cited by 19 publications

(7 citation statements)

References 3 publications

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“…Transparent conducting oxides have attracted tremendous interest recently because of their importance in many potential applications such as electrodes in solar cells, 1 in molten carbonate fuel cells, 2 or as heterogeneous optical recording media. 3 Most of the transparent conducting oxides under development are n-type semiconducting materials. Unfortunately, high conductivity limits their transmissivity in the infrared (IR) region.…”

Section: Introductionmentioning

confidence: 99%

Nearly Monodispersed Multifunctional NiCo₂O₄ Spinel Nanoparticles: Magnetism, Infrared Transparency, and Radiofrequency Absorption

et al. 2008

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We report low temperature synthesis of nearly monodispersed NiCo2O4 nanoparticles by a combustion method utilizing glycine as a fuel and nitrate as oxidizer. An appropriate glycine-to-metal nitrate molar ratio favors the formation of nearly monodispersed NiCo2O4 nanoparticles. We discuss the relevant synthesis chemistry and their detailed characterization using different techniques such as X-ray diffraction, high resolution transmission electron microscopy, superconducting quantum interference device magnetometry, and Fourier transform infrared spectroscopy. We also show the interesting evolution of the phase and magnetic properties of such nanoparticles upon annealing treatment. Importantly, these nanoparticles show a high (∼83%) infrared transparency that is useful for specific solar and fuel cell electrode applications as well as significant radiofrequency (RF) absorption causing substantial heating of their aqueous dispersion that should have potential applications for magnetic hyperthermia.

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Section: Introductionmentioning

confidence: 99%

Nearly Monodispersed Multifunctional NiCo₂O₄ Spinel Nanoparticles: Magnetism, Infrared Transparency, and Radiofrequency Absorption

et al. 2008

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“…In the 1990s, new n-type TCO materials consisting of multicomponent oxides have been developed such as Zn 2 SnO 4 [8], MgIn 2 O 4 [9], CdSb 2 O 6 : Y [10], ZnSnO 3 [11], GaInO 3 [12], Zn 2 In 2 O 5 [13] and In 4 SnO 12 [14]. Also, p-type conductivity has been discovered recently in materials such as CuAlO 2 [15][16][17][18], CuGaO 2 [15,19,20], SrCu 2 O 2 [15,21,22], CuScO 2 [23], CuYO 2 : Ca [24], (La 1−x Sr x O) CuS [25], CuCr 1−x Mg x O 2 [26], ZnO:(Ga, N) [27][28][29] and NiO : Li [30][31][32]. Therefore, the use of n-type and p-type TCOs in the fabrication of active elements in optoelectronic devices as transparent p-n junctions is possible [26,33,34].…”

Section: Introductionmentioning

confidence: 99%

The influence of Al doping on the electrical, optical and structural properties of SnO₂transparent conducting films deposited by the spray pyrolysis technique

Bagheri–Mohagheghi¹,

Shokooh‐Saremi²

2004

J. Phys. D: Appl. Phys.

128

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In this study, the influence of increasing the Al concentration on the electrical, optical and structural properties of spray-pyrolysis-deposited SnO 2 films has been investigated. The SnO 2 : Al films were deposited at a substrate temperature of 480˚C using a hydro-alcoholic solution consisting of tin and aluminium chlorides with various Al-doping levels from 0 to 30 wt% in solution. The [Al]/[Sn] atomic ratios were from 0 to 12.1 in films. The results of x-ray diffraction have shown that the deposited films are polycrystalline without any second phases with preferential orientations along the (110), ( 211) and (301) planes and an average grain size of 28.7 nm. Also, the Hall effect and resistivity measurements of the films show that for a specific acceptor dopant (Al) concentration (8.0 at% in film), majority carriers convert from electrons to holes and p-conductivity dominates. The optical absorption edge for undoped SnO 2 films lies at 4.105 eV, whereas for high acceptor-doped films it shifts towards lower energies (longer wavelengths) in the range of 4.105-3.604 eV.

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“…7 Due to its relatively high electrical conductivity and infrared transparency, NiCo 2 O 4 has been developed as an alternative electrode material for supercapacitors [10][11][12] and used as a heterogeneous optical recording media. 13 Moreover, the electrochemical properties have been studied widely in alkaline medium for the oxygen evolution reaction. The preparation methods include thermal decomposition, 5,14 solution deposition, 15 combinatorial sputtering deposition, 16 single-target sputter deposition, 16 and hydroxide coprecipitation, 17 etc.…”

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confidence: 99%

NiCo[sub 2]O[sub 4]/C Nanocomposite as a Highly Reversible Anode Material for Lithium-Ion Batteries

Nuli

Zhang

Guo

et al. 2008

Electrochem. Solid-State Lett.

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A NiCo 2 O 4 /C nanocomposite has been synthesized by a hydrothermal method followed by a calcination. X-ray powder diffraction and transmission electron microscopy measurements demonstrated the composite was composed of crystalline NiCo 2 O 4 and amorphous carbon, and NiCo 2 O 4 and carbon particles amalgamated together with good affinity. The electrochemical results showed as high as 914.5 mAh/g reversible capacity could be achieved at 40 mA/g current density in the potential range of 0.01Ϫ3.0 V. The initial coulombic efficiency of the composite was 79.2%, and the capacity retention was 78.3% up to 50 cycles. The superior electrochemical performance indicated that the NiCo 2 O 4 /C nanocomposite might be a promising alternative to conventional graphite-based anode materials for lithium-ion batteries.During the past decade, research on anode materials for lithiumion batteries mainly focused on searching for carbon alternatives with larger capacities and better cycling performances. 1,2 Conversion reactions have opened a new line of research in the field of electrode materials for Li-ion batteries. It was found that transitionmetal oxides ͑MO, where M is Co, Ni, Cu, or Fe͒ can be reduced to their metal state and then be reoxidized, providing a large reversible capacity ͑700 mAh/g͒, good cycling performance, and high recharge rates. 3 The reaction mechanism of these metal oxides by lithium involved the reversible reduction and oxidation of metal ͑M͒ nanosized particles dispersed into a lithia matrix ͑Li 2 O͒, followed by the formation/decomposition of a solid electrolyte interface ͑SEI͒. It was found that the electrochemical properties of the electrodes were related to factors such as the large change in volume, the serious aggregation or pulverization of active particles during chargedischarge, and poor conductivity of the transition metal oxides. 4 In previous work, it has further been proposed that mixed transition metal oxides such as NiCo 2 O 4 , 5 NiFe 2 O 4 , 6 and CoFe 2 O 4 , 7-9 can react reversibly with larger amounts of lithium and the preparation methods have a crucial effect on electrochemical performance in long-term cycling. 7 Due to its relatively high electrical conductivity and infrared transparency, NiCo 2 O 4 has been developed as an alternative electrode material for supercapacitors 10-12 and used as a heterogeneous optical recording media. 13 Moreover, the electrochemical properties have been studied widely in alkaline medium for the oxygen evolution reaction. The preparation methods include thermal decomposition, 5,14 solution deposition, 15 combinatorial sputtering deposition, 16 single-target sputter deposition, 16 and hydroxide coprecipitation, 17 etc.It is well known that hydrothermal synthesis has been shown to be advantageous over other methods in homogeneous nucleation and grain growth. 18 In the work reported here, we describe an easy route to isochronously synthesize NiCo 2 O 4 /C nanocomposite via a lowtemperature hydrothermal method followed by calcination, using poly͑ethylene gl...

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A Thin Film of an Ni–NiO Heterogeneous System for an Optical Recording Medium

Cited by 19 publications

References 3 publications

Nearly Monodispersed Multifunctional NiCo₂O₄ Spinel Nanoparticles: Magnetism, Infrared Transparency, and Radiofrequency Absorption

Nearly Monodispersed Multifunctional NiCo₂O₄ Spinel Nanoparticles: Magnetism, Infrared Transparency, and Radiofrequency Absorption

The influence of Al doping on the electrical, optical and structural properties of SnO₂transparent conducting films deposited by the spray pyrolysis technique

NiCo[sub 2]O[sub 4]/C Nanocomposite as a Highly Reversible Anode Material for Lithium-Ion Batteries

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A Thin Film of an Ni–NiO Heterogeneous System for an Optical Recording Medium

Cited by 19 publications

References 3 publications

Nearly Monodispersed Multifunctional NiCo2O4 Spinel Nanoparticles: Magnetism, Infrared Transparency, and Radiofrequency Absorption

Nearly Monodispersed Multifunctional NiCo2O4 Spinel Nanoparticles: Magnetism, Infrared Transparency, and Radiofrequency Absorption

The influence of Al doping on the electrical, optical and structural properties of SnO2transparent conducting films deposited by the spray pyrolysis technique

NiCo[sub 2]O[sub 4]/C Nanocomposite as a Highly Reversible Anode Material for Lithium-Ion Batteries

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Product

Resources

About

Nearly Monodispersed Multifunctional NiCo₂O₄ Spinel Nanoparticles: Magnetism, Infrared Transparency, and Radiofrequency Absorption

Nearly Monodispersed Multifunctional NiCo₂O₄ Spinel Nanoparticles: Magnetism, Infrared Transparency, and Radiofrequency Absorption

The influence of Al doping on the electrical, optical and structural properties of SnO₂transparent conducting films deposited by the spray pyrolysis technique