Synthesis of LiCoxMn2-xO4 by Low Temperature Solid-State Reaction for Cathode Material

2015 ◽  
Vol 1123 ◽  
pp. 100-103 ◽  
Author(s):  
Dyah Purwaningsih ◽  
Roto Roto ◽  
Narsito ◽  
Hari Sutrisno
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Low Temperature ◽  
Lithium Batteries ◽  
Solid State Reaction ◽  
Direct Method ◽  
Low Cost ◽  
Cubic Crystal ◽  
Package Program ◽  
Cell Volumes

LiCoxMn2-xO4 can serve as one of the main candidates for cathode materials for lithium batteries since they are abundant, low cost and environmentally friendly. This study aims to study the synthesis of LiCoxMn2-xO4 by low temperature solid-state reaction and its microstructure determination. Attention is paid more to the mole ratio of Co/Mn in LiCoxMn2-xO4. The compound was characterized by XRD, SEM-EDX, and BET while the analysis of LiCoxMn2-xO4 microstructure was carried out by Direct Method using winPLOTR package program and Diamond using XRD data. The series of LiCoxMn2-xO4 have well–developed cubic crystal structure with Fd3m phase, and the increase in the dopant does not change its structure. The lattice parameters and cell volumes of LiCoxMn2-xO4 tend to decrease with the increase in x values

scholarly journals Preparation of LiMn2O4 Microstructure by Low Temperature Solid-State Reaction for Cathode Material

2015 ◽  
Vol 1101 ◽  
pp. 134-137 ◽  
Author(s):  
Dyah Purwaningsih ◽  
Roto Roto ◽  
Narsito ◽  
Hari Sutrisno
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Calcination Temperature ◽  
Solid State Reaction ◽  
Heating Temperature ◽  
Direct Method ◽  
Chemical Conversion ◽  
Package Program ◽  
Cell Volumes ◽  
Xrd And Tem

This study aims at investigating a better condition of calcination at different temperature to produce LiMn2O4 microstructure. In this study, cubic LiMn2O4 was synthesized using a low temperature solid-state reaction. We report, here, MnO2 nanorods synthesis by reflux and their chemical conversion to LiMn2O4. The compound was characterized by XRD and TEM. Further, the analysis of LiMn2O4 microstructure was carried out by Direct Method using winPLOTR package program and Diamond using XRD data. At low calcination temperature, Mn2O3 is present as an impurity, but it disappears along with the increase in calcination temperature. It is also found that solid state reaction at is 750oC give nanoLiMn2O4. The lattice parameters and cell volumes of LiMn2O4 increases with the increase in heating temperature.

A facile low-cost synthesis of ZnO nanorods via a solid-state reaction at low temperature

2006 ◽  
Vol 60 (29-30) ◽  
pp. 3786-3788 ◽  
Author(s):  
Xianming Hou ◽  
Feng Zhou ◽  
Weimin Liu
Keyword(s):  
Solid State ◽  
Low Temperature ◽  
Solid State Reaction ◽  
Low Cost ◽  
Zno Nanorods

Crystalline Characterization and Dielectric Constant of Barium Strontium Titanates Prepared by Solid State Reaction

2015 ◽  
Vol 1123 ◽  
pp. 123-126 ◽  
Author(s):  
Retno Maharsi ◽  
Anif Jamaluddin ◽  
Agus Supriyanto ◽  
Yofentina Iriani
Keyword(s):  
Crystal Structure ◽  
Dielectric Constant ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Lattice Parameter ◽  
Cubic Crystal ◽  
A Value ◽  
Barium Strontium ◽  
Tetragonal Crystal

Barium strontium titanate (BST) materials with the chemical formula of BaxSr1-xTiO3 had successfully made ​​by solid state reaction method. The materials were made in the form of bulk. Ba mole composition was varied in the value of x = 0,5; 0,7; and 0,9. It was varied to study the influence on crystal structure and dielectric constant. The result of crystalline characterization performed by X-ray diffractometer instrument shows that changes in the composition of x causes a shift in the diffraction angle. The lattice parameter was obtained from the refinement with the GSAS software and calculation process. Lattice parameter of BST with a value of x = 0,5 and 0,7 are a = b = c, so that the crystal structure is cubic. While the BST with a value of x = 0,9 has lattice parameter a = b ≠ c, so that the crystal structure is tetragonal. Dielectric constant measurements performed at frequency of 1 KHz by RLC-meter instrument. The highest dielectric constant ​was ​obtained at 465 on Ba0,9Sr0,1TiO3. The dielectric constant of cubic-crystal structured material is bigger than tetragonal-crystal structured material.

The Synthesis of YBa3Cu4Ox Superconductor and Comparison with YBa2Cu3Ox

2014 ◽  
Vol 979 ◽  
pp. 220-223
Author(s):  
Piyamas Chainok ◽  
Supphadate Sujinnapram ◽  
Tunyanop Nilkamjon ◽  
Sermsuk Ratreng ◽  
Kiattipong Somsri ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Grain Size ◽  
Solid State ◽  
Solid State Reaction ◽  
Profile Analysis ◽  
Analysis Method ◽  
Orthorhombic Structure ◽  
Resistivity Measurements ◽  
Full Profile ◽  
Sem Micrograph

In this research, the Y123 (YBa2Cu3Ox) and Y134 (YBa3Cu4Ox) superconductors were synthesized by solid state reaction and melt process, respectively. The crystal structure of all the samples were then determined using the Rietveld full-profile analysis method to indicate orthorhombic structure. The resistivity measurements showing Tc onset of Y123 lower than Y134 for solid state reaction but higher than Y134 melt process. However, the critical temperature off-set of Y134 has lower than of Y123. The SEM and EDX show that all samples were inhomogeneous. The SEM micrograph for solid state reaction Y123 has many pores between the grain and the grain size clearly demonstrated and bigger than Y134. It was seen that these pores are party eliminated in melt process samples. FTIR spectra detected the trace of carbonate residue in all samples.

scholarly journals β-Li0.37Na0.63Fe(MoO4)2

2014 ◽  
Vol 70 (2) ◽  
pp. i9-i10 ◽  
Author(s):  
Amira Souilem ◽  
Mohamed Faouzi Zid ◽  
Ahmed Driss
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Solid State Reaction ◽  
Title Compound ◽  
General Position ◽  
Site Occupancy ◽  
The Other ◽  
Main Structure ◽  
Axis Direction ◽  
A Site

The title compound, lithium/sodium iron(III) bis[orthomolybdate(VI)], was obtained by a solid-state reaction. The main structure units are an FeO6octahedron, a distorted MoO6octahedron and an MoO4tetrahedron sharing corners. The crystal structure is composed of infinite double MoFeO11chains along theb-axis direction linked by corner-sharing to MoO4tetrahedra so as to form Fe2Mo3O19ribbons. The cohesion between ribbonsviamixed Mo—O—Fe bridges leads to layers arranged parallel to thebcplane. Adjacent layers are linked by corners shared between MoO4tetrahedra of one layer and FeO6octahedra of the other layer. The Na+and Li+ions partially occupy the same general position, with a site-occupancy ratio of 0.631 (9):0.369 (1). A comparison is made withAFe(MoO4)2(A= Li, Na, K and Cs) structures.

SYNTHESIS, MORPHOLOGY AND STRUCTURAL PROPERTIES OF (GD,ND)SR2RUCU2O8 SAMPLES

2003 ◽  
Vol 17 (04n06) ◽  
pp. 899-904 ◽  
Author(s):  
A. VECCHIONE ◽  
M. GOMBOS ◽  
C. TEDESCO ◽  
A. IMMIRZI ◽  
L. MARCHESE ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Solid State ◽  
Powder Diffraction ◽  
Solid State Reaction ◽  
X Ray ◽  
Structure And Morphology ◽  
Polycrystalline Powder ◽  
Scanning Electron

NdSr 2 RuCu 2 O x material has been prepared as polycrystalline powder by solid state reaction. The compound has been investigated by synchrotron x-ray powder diffraction and scanning electron microscopy. The experimental results show that the average crystal structure is a disordered cubic perovskite with Nd and Sr cations occupying the same site and the same substitution is found for Cu and Ru atoms. A comparison between the crystal structure and morphology of this compound and the superconducting tetragonal GdSr 2 RuCu 2 O 8 is also discussed.

Thermal enhancement of 2H11/2→4I15/2 up-conversion luminescence of Er3+ doped K2Yb(PO4)(MoO4) phosphors

2021 ◽  
Author(s):  
Hongqiang Cui ◽  
Yongze Cao ◽  
Lei Zhang ◽  
Yuhang Zhang ◽  
Siying Ran ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
X Ray Diffraction ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
Reaction Method ◽  
X Ray ◽  
Thermal Enhancement

Er3+ with different concentrations doped K2Yb(PO4)(MoO4) phosphors were prepared by a solid-state reaction method, and the layered orthorhombic crystal structure of the samples was confirmed by X-ray diffraction (XRD). Under...

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