Fabrication of ZnO nanorods by simplified spray pyrolysis

Yılmaz, Mehmet; Turgut, G.; Aydın, Serdar; Ertuğrul, Mehmet

doi:10.17678/beuscitech.47151

Cited by 5 publications

(6 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculated D, and values are listed in Table 2. The obtained values are comparable to the reported results ofS/cm Yilmaz et al [25]. The dislocation density ( ) indicates the length of dislocation lines per unit volume and measures the amount of defects in a crystal.…”

Section: Cossupporting

confidence: 91%

See 1 more Smart Citation

Impact of Lithium Composition on Structural, Electronic and Optical Properties of Lithium Cobaltite Prepared by Solid-state Reaction

et al. 2014

View full text Add to dashboard Cite

The lithium-cobalt oxide Li x CoO 2 is a promising candidate as highly active cathode material of lithium ion rechargeable batteries. The crystalline-layered lithium cobaltite has attracted increased attention due to recent discoveries of some extraordinary properties such as unconventional transport and magnetic properties. Due to layered crystal structure, Li contents (x) in Li x CoO 2 might play an important role on its interesting properties. LiCoO 2 crystalline cathode material was prepared by using solid-state reaction synthesis, and then Li x CoO 2 (x<1) has been synthesized by deintercalation of produced single-phase powders. Structure and morphology of the synthesized powders were investigated by X-ray diffraction (XRD), Infrared spectroscopy, Impedance analyzer etc. The influence of lithium composition (x) on structural, electronic and optical properties of lithium cobaltite was studied. Temperature dependent electrical resistivity was measured using four-probe technique. While Li x CoO 2 with x = 0.9 is a semiconductor, the highly Li-deficient phase (0.75 ≥ x ≥ 0.5) exhibits metallic conductivity. The ionic conductivity of Li x CoO 2 (x = 0.5 -1.15) was measured using impedance spectroscopy and maximum conductivity of Li 0.5 CoO 2 was found to be 6.5×10-6 S/cm at 273 K. The properties that are important for applications, such as ionic conductivity, charge capacity, and optical absorption are observed to increase with Li deficiency.

show abstract

Section: Cossupporting

confidence: 91%

“…The performance of the lithium ion battery is affected by a numerous factors such as anode and cathode particle size (D), micro strain ( ) and dislocation density ( ) [25]. The average grain size (D) and micro strain ( ) of the Li x CoO 2 particles were calculated using Scherrer formulae, D…”

Section: Structural Propertiesmentioning

confidence: 99%

Impact of Lithium Composition on Structural, Electronic and Optical Properties of Lithium Cobaltite Prepared by Solid-state Reaction

et al. 2014

View full text Add to dashboard Cite

show abstract

“…19,20 In addition, there are some studies in the literature on the production of ZnO nanorods by the spray pyrolysis method. [21][22][23][24] The doping operation takes place in the form of the substitution of the doping ions with Zn 2+ ions which are in the ZnO crystal. When an ion with a higher oxidation state than Zn 2+ enters the crystal, there is an increase in the number of electrons in the crystal, and accordingly, an increase in electrical conductivity occurs.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from these, the basic structural and morphological properties of the produced materials can be kept under control by adjusting the film growth conditions, so that the grown films gain the necessary functionality for certain applications 19,20 . In addition, there are some studies in the literature on the production of ZnO nanorods by the spray pyrolysis method 21–24 …”

Section: Introductionmentioning

confidence: 99%

Fabrication and investigation of zinc oxide nanorods doped with molybdenum via ultrasonic spray pyrolysis

Çolak

Karaköse

2023

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

Molybdenum ions with high valence states (Mo6+) can contribute to electrical conductivity and optical transmittance. For this reason, zinc oxide (ZnO) nanorods doped with molybdenum metal were fabricated on a glass substrate by ultrasonic spray pyrolysis method. The doping concentrations were between 0–10 mol%. The crystallographic properties of the resulting ZnO samples were examined by the X‐ray diffraction (XRD) technique. According to the XRD analysis, it was found that the lattice structure of the samples belonged to the hexagonal (wurtzite) unit cell. The XRD results indicated that the crystals grow in the c‐axis (002) direction. The morphological features of the obtained thin films were studied by field emission scanning electron microscopy. The energy‐dispersive X‐ray spectroscopy results displayed that the Mo ions were in the ZnO lattice. Four point probe method was used to determine the electrical conductivity properties of the samples. The 10% mol doped sample has the highest conductivity with values of between 1.58 × 10−9 and 1.58 × 10−6 (ohm‐cm)−1. The optical transmittances of the samples were measured at wavelengths between 300 and 1000 nm. It was observed that the produced films had high optical transparency which was approximately 85%.

show abstract

“…The solid-state reactions that are typically employed to produce oxide-based materials, like LiCoO 2 , in their desired phases, are time consuming and proceed at extremely high temperatures that are not particularly conducive to forming nanostructures. [8][9][10] Alternatives such as hydrothermal reactions are fairly better and achieve desired architectures at considerably lower temperatures. 11,12 However, the use of high annealing temperatures eventually destabilizes the nanostructures, greatly diminishing the utility of the methodology.…”

Section: Introductionmentioning

confidence: 99%

Microemulsion-based synthesis and electrochemical evaluation of different nanostructures of LiCoO₂prepared through sacrificial nanowire templates

et al. 2014

View full text Add to dashboard Cite

For the first time, we demonstrate the use of a microemulsion reaction to synthesize different nanostructures of LiCoO2 cathode material. By varying the annealing temperature and time, porous nanowires and nanoparticles of LiCoO2 are obtained. The electrochemical performances of these different nanostructures obtained under the respective annealing conditions are evaluated. It is shown that nanoparticles formed under the annealing condition of 700 °C, 1.5 h perform the best, delivering an initial capacity of around 135 mA h g(-1), which is close to the theoretical capacity of LiCoO2, 140 mA h g(-1). They also exhibit a capacity retention of around 93% by 100 cycles at 0.1 C. Comparisons are made between our LiCoO2 material obtained under different annealing conditions and those in the literature.

show abstract

Fabrication of ZnO nanorods by simplified spray pyrolysis

Cited by 5 publications

References 16 publications

Impact of Lithium Composition on Structural, Electronic and Optical Properties of Lithium Cobaltite Prepared by Solid-state Reaction

Impact of Lithium Composition on Structural, Electronic and Optical Properties of Lithium Cobaltite Prepared by Solid-state Reaction

Fabrication and investigation of zinc oxide nanorods doped with molybdenum via ultrasonic spray pyrolysis

Microemulsion-based synthesis and electrochemical evaluation of different nanostructures of LiCoO₂prepared through sacrificial nanowire templates

Contact Info

Product

Resources

About

Fabrication of ZnO nanorods by simplified spray pyrolysis

Cited by 5 publications

References 16 publications

Impact of Lithium Composition on Structural, Electronic and Optical Properties of Lithium Cobaltite Prepared by Solid-state Reaction

Impact of Lithium Composition on Structural, Electronic and Optical Properties of Lithium Cobaltite Prepared by Solid-state Reaction

Fabrication and investigation of zinc oxide nanorods doped with molybdenum via ultrasonic spray pyrolysis

Microemulsion-based synthesis and electrochemical evaluation of different nanostructures of LiCoO2prepared through sacrificial nanowire templates

Contact Info

Product

Resources

About

Microemulsion-based synthesis and electrochemical evaluation of different nanostructures of LiCoO₂prepared through sacrificial nanowire templates