Growth and Studies of Li (Mn, Co) Oxides for Battery Electrodes

1999 ◽  
Vol 606 ◽  
Author(s):  
S. Nieto-Ramos ◽  
M.S. Tomar ◽  
R.S. Katiyar
Keyword(s):  
Spin Coating ◽  
Annealing Temperature ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Rechargeable Battery ◽  
Oxide Materials ◽  
Synthetic Route ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solution Route

AbstractThere is interest in lithium intercalation oxide materials for cathodes in rechargeable batteries. We have synthesized LiMOx, (where M = Mn, Co) by a less expensive solution route. Reagent grade acetates or hydroxides as precursors for lithium, manganese, and cobalt, respectively, with methoxy ethenol and acetic acid as solvents were used. Powders with different compositions were achieved at annealing temperature below 700 °C. Thin films were deposited by spin coating. X-ray diffraction, Raman spectroscopy, and impedance spectroscopic results are presented. These studies indicate that this synthetic route is suitable to produce good quality lithium-based oxides useful for cathode in lithium-ion rechargeable battery.

scholarly journals Effect of Annealing Temperature On Iron Doped Titanium Dioxide Thin Films Prepared By Spin Coating Technique

2016 ◽  
Vol 2 (02) ◽  
pp. 61
Author(s):  
Mukhtar Effendi ◽  
Bilalodin B
Keyword(s):  
Thin Films ◽  
Titanium Dioxide ◽  
Spin Coating ◽  
Annealing Temperature ◽  
Spin Coating Technique ◽  
X Ray Diffraction ◽  
X Ray ◽  
Coating Technique ◽  
Doped Titanium Dioxide ◽  
Titanium Dioxide Thin Films

<span>Iron (Fe) doped titanium dioxide (TiO<span>2<span>) thin films have been successfully deposited by <span>using spin coating technique. X-ray diffraction (XRD) and Scanning Electron Microscope <span>(SEM) were employed to characterize the microstructure and crystallite morphology of the <span>films. It was indicated that the rutile crystal orientation appears due to increasing annealing <span>temperature of the thin films. Furthermore, increasing annealing temperature of the thin <span>films yielded an increasing of porosity value which is related to the application on gas <span>sensor films.</span></span></span></span></span></span><br /></span></span></span>

scholarly journals Comparison of lithium and sodium intercalation materials

2015 ◽  
Vol 80 (6) ◽  
pp. 801-804 ◽  
Author(s):  
Milica Vujkovic
Keyword(s):  
Electrode Materials ◽  
Lithium Ion ◽  
Rechargeable Batteries ◽  
Specific Power ◽  
X Ray Diffraction ◽  
X Ray ◽  
High Participation ◽  
Basic Characteristics ◽  
Intensive Investigation ◽  
Intercalation Materials

Low abundance of lithium in Earth?s crust and its high participation in overall cost of lithium-ion batteries incited intensive investigation of sodium-ion batteries, in hope that they may become similar in basic characteristics: specific energy and specific power. Furthermore, over the last years the research has been focused on the replacement of organic electrolytes of Li- and Na-ion batteries, by aqueous electrolytes, in order to simplify the production and improve safety of use. In this lecture, some recent results on the selected intercalation materials are presented: layered structure vanadium oxides, olivine and nasicon phosphates, potentially usable in both Li and Na aqueous rechargeable batteries. After their characterization by X-ray diffraction and electron microscopy, the electrochemical behavior was studied by both cyclic voltammetry and hronopotenciometry. By comparing intercalation kinetics and coulombic capacity of these materials in LiNO3 and NaNO3 solutions, it was shown that the following ones: Na1.2V3O8, Na2V6O16/C , NaFePO4/C and NaTi2(PO4)3/C may be used as electrode materials in aqueous alkali-ion batteries.

Synthesis and characterization of Ca1-X SrxCu3Ti4O12 thin films for dielectric applications

2003 ◽  
Vol 785 ◽  
Author(s):  
R. Guzman ◽  
M.S. Tomar ◽  
R.E. Melgarejo
Keyword(s):  
Thin Films ◽  
Spin Coating ◽  
Dielectric Response ◽  
Sol Gel ◽  
Chemical Solution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solution Route ◽  
Chemical Solution Route

ABSTRACTThere is a great deal of interest in CaCu3Ti4O12 system for dielectric applications. We have studied Ca1-xSrxCu3Ti4O12 system for different compositions. The material is synthesized by sol-gel chemical solution route and thin films were deposited by spin coating. Thin films were investigated by x-ray diffraction and Raman spectroscopy for structural properties. These results indicate a solid solution for the compositions x = 0.00 to 0.80. The SEM micrographs shows the uniform films at 800° C, but the dielectric response of Ca1-xSrxCu3Ti4O12 (x = 0.00) shows the dielectric constant value below 200.

scholarly journals RISING beamline (BL28XU) for rechargeable battery analysis

2013 ◽  
Vol 21 (1) ◽  
pp. 268-272 ◽  
Author(s):  
H. Tanida ◽  
K. Fukuda ◽  
H. Murayama ◽  
Y. Orikasa ◽  
H. Arai ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Rechargeable Batteries ◽  
Time Range ◽  
Rechargeable Battery ◽  
X Ray Diffraction ◽  
Battery Charging ◽  
X Ray ◽  
And Performance ◽  
X Ray Absorption

The newly installed BL28XU beamline at SPring-8 is dedicated toin situstructural and electronic analysis of rechargeable batteries. It supports the time range (1 ms to 100 s) and spatial range (1 µm to 1 mm) needed for battery analysis. Electrochemical apparatus for battery charging and discharging are available in experimental hutches and in a preparation room. Battery analysis can be carried out efficiently and effectively using X-ray diffraction, X-ray absorption fine-structure analysis and hard X-ray photoelectron spectroscopy. Here, the design and performance of the beamline are described, and preliminary results are presented.

GROWTH OF Cu2ZnSn(S,Se)4 THIN FILMS BY A SIMPLE ECO-FRIENDLY SOLUTION ROUTE METHOD

2012 ◽  
Vol 19 (04) ◽  
pp. 1250034 ◽  
Author(s):  
H. ZHANG ◽  
Z. Q. LI ◽  
Y. R. CHEN ◽  
J. J. LI ◽  
Z. SUN ◽  
...  
Keyword(s):  
Spin Coating ◽  
Power Conversion ◽  
Inert Atmosphere ◽  
Metal Salts ◽  
Precursor Film ◽  
Photovoltaic Devices ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solution Precursor ◽  
Solution Route

A simple and hydrazine-free solution-based approach for depositing Cu2ZnSnS4 (CZTS) and Cu2ZnSn(S,Se)4 (CZTSSe) absorber layers is reported. The process involves incorporating metal salts (Cu(CH3COO)2, Zn(CH3COO)2, SnCl2) and thiourea into a single pyridine-based solution, spin-coating a precursor film, and sulfurizing with sulfur powders or selenizing using Se pellets in an inert atmosphere, to form the desired CZTS or CZTSSe films. X-ray diffraction and Raman spectra studies show that kesterite CZTS and CZTSSe are formed after sulfurization and selenization, respectively. The selenized CZTSSe displays higher crystallinity than the sulfurized CZTS. Photovoltaic devices (glass/ Mo /CZTSSe/ CdS /i- ZnO /n- ZnO /A) employing the solution precursor selenized at 500°C have yielded power conversion efficiency of 1.44% under AM 1.5 illumination.

Optical Properties of Cadmium Sulphide (CdS) Thin Films Spin-Coated on Glass Substrates

2021 ◽  
Vol 14 (1) ◽  
pp. 49-58
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Extinction Coefficient ◽  
Spin Coating ◽  
Glass Substrate ◽  
Annealing Temperature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sem Image ◽  
Cds Thin Films

Abstract: CdS thin films were synthesized on a glass substrate using spin coating method. The effects of annealing temperature on the optical properties of the prepared CdS films were investigated for different annealing temperatures of 200, 300 and 400 °C. Cadmium acetate, thiourea and ammonia were used as the source materials for the preparation of the thin films. The elemental composition, morphological, optical and structural properties of the films obtained by spin coating were investigated using Energy Dispersive X- ray Spectroscopy (EDAX), Scanning Electron Microscope (SEM), UV Spectrophotometry and X-ray diffraction (XRD) respectively. The SEM image of the unannealed film shows a spherical morphology and an irregular pattern without any void. It also shows that the film covers the substrate well. Annealing leads to an increase in transmittance with the highest transmission of 87% observed for the film annealed at 400oC. With increase in annealing temperature, optical parameters like extinction coefficient and dielectric constants show a reduction, while refractive index and skin depth exhibit an improvement. The absorption coefficient increases with increasing photon energy in the range 3.6 to 4.0 eV. The band gap values of the CdS thin film samples were found to be in the range between 3.14 eV and 3.63 eV. The bandgap is somewhat greater than the value of bulk CdS due to quantum size effect. EDX image confirmed the presence of Cadmium and Sulphur in the prepared CdS films. Annealing did not significantly change the extinction coefficient. The X-ray diffraction confirms the cubic structure of CdS deposited on glass substrate, where reflections from (111), (200), (220) and (311) planes are clearly shown with a preferential orientation along (111) plane. Debye-Scherer equation was used to determine the crystallite size of the most intense plane (111) and the value was found to be 8.4 nm. Keywords: SEM image, Spin coating, Surface morphology, Optical properties, Annealing.

scholarly journals The structure and optical properties of organic semiconductor bulk hetrojunction blend (NiPcTs/Alq3) thin films

2019 ◽  
Vol 15 (33) ◽  
pp. 40-48
Author(s):  
Atyaf H. Kadhum
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Optical Properties ◽  
Spin Coating ◽  
Annealing Temperature ◽  
Bulk Heterojunction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Visible ◽  
Xrd Patterns

The effect of heat treatment on the optical properties of the bulk heterojunction blend nickel (II) phthalocyanine tetrasulfonic acid tetrasodium salt and Tris (8-hydroxyquinolinato) Aluminum (NiPcTs/Alq3) thin films which prepared by spin coating was described in this study. The films coated on a glass substrate with speed of 1500 rpm for 1.5 min and treated with different annealing temperature (373, 423 and 473) K. The samples characterized using UV-Vis, X ray diffraction and Fourier transform Infrared (FTIR) spectra, XRD patterns indicated the presence of amorphous and polycrystalline blend (NiPcTs/Alq3). The results of UV visible shows that the band gap increase with increasing the annealing temperature up to 373 K and decreases with increase the annealing temperature to (423, 473)K respectively.

scholarly journals PENUMBUHAN DAN KARAKTERISASI LAPISAN TIPIS PbTiO3 YANG DISIAPKAN DENGAN TEKNIK SPIN COATING

Molekul ◽  
2008 ◽  
Vol 3 (1) ◽  
pp. 48
Author(s):  
Bilalodin Bilalodin
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Spin Coating ◽  
Annealing Temperature ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Bulk Powder ◽  
Pbtio3 Thin Film ◽  
Coating Method

The growth of PbTiO3 ferroelectric thin films have successfully done. Thin films were made from bulk (powder) PbTiO3 dissolved in methanol solution. The condensation was mixed during 1 hour to get homogeneous condensation. Thin films were grown above corning substrates by spin coating method. Optimation was done by various of annealing temperature. The physical properties of thin films were characterized by Energi Dispersive X-Ray Spectroscopy (EDS), X-Ray Diffraction (XRD), Scanning and Electron Microscopy (SEM). EDS measurement showed that the stoichiometry composition ratio of Pb/Ti is 1/1.26 at annealing temperature 600oC and 1/1.29 at annealing temperature 700oC. The result of XRD pattern showed that crystal structure of PbTiO3 thin films are tetragonal. The calculated lattice parameters ontained from Chohen Method are a=b= 3.873 Å dan c= 4.130Å. The result of SEM PbTiO3 thin film showed that thin film has globular grain size.

GROWTH AND ELECTRICAL PROPERTIES OF (Bi, Nd)4Ti3O12 THIN FILMS

2004 ◽  
Vol 11 (06) ◽  
pp. 503-507 ◽  
Author(s):  
CHANGHONG YANG ◽  
ZHUO WANG ◽  
DONGYING PAN ◽  
JIANRU HAN ◽  
QINGXIA LI ◽  
...  
Keyword(s):  
Thin Films ◽  
Dielectric Constant ◽  
Electrical Properties ◽  
Atomic Force Microscope ◽  
Spin Coating ◽  
Annealing Temperature ◽  
X Ray Diffraction ◽  
X Ray ◽  
Atomic Force ◽  
Dissipation Loss

Neodymium-doped Bi 4 Ti 3 O 12 ( Bi 3.15 Nd 0.85 Ti 3 O 12) thin films have been synthesized by metalorganic solution decomposition and deposited on SiO 2/ p - Si (111) substrate by spin coating. The structural characteristic and crystallization of the films were examined by X-ray diffraction and atomic force microscope. The insulating property, dielectric constant and dissipation loss were found to be dependent on the annealing temperature. Nonhysteretic C – V curves at various frequencies were also collected. The films in the ON and OFF states were relatively stable.

scholarly journals SnO2/PANI nanocomposite electrodes for supercapacitors and lithium ion batteries

2018 ◽  
Vol 4 (1) ◽  
pp. 32-38 ◽  
Author(s):  
Venkata S. Reddy Channu ◽  
B. Rambabu ◽  
Kusum Kumari ◽  
Rajmohan R. Kalluru ◽  
Rudolf Holze
Keyword(s):  
Lithium Ion Battery ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Morphological Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Solution Route ◽  
Nanocomposite Electrodes

Abstract Tin oxide (SnO2) nanostructures and SnO2/Polyaniline (PANI) nanocomposites to be used as electrode materials for a lithium ion battery were synthesized using a solution-route technique with chelating agents followed by calcination at 300∘C for 4 h. Structural and morphological properties were studied with powder X-ray diffraction, scanning electron and transmission electron microscopy. Particles of 25-10 nm size are observed in the microscope images. TGA results showed that the PANI-modified SnO2 nanoparticles exhibit higher thermal stability than the SnO2 nanoparticles. Electrochemical properties of SnO2 and SnO2/PANI electrodes were examined in a lithium ion battery and a supercapacitor. The electrode of SnO2/PANI shows higher specific capacity. The cell with SnO2/PANI exhibits a specific capacity of 1450 mAh/g at C/10. Supercapacitor results indicate that the PANI-modified SnO2 composite had a higher current with apparent cathodic and anodic peaks.

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