scholarly journals Fast Production of High Performance LiNi0.815Co0.15Al0.035O2 Cathode Material via Urea-Assisted Flame Spray Pyrolysis

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2757 ◽  
Author(s):  
Cornelius Satria Yudha ◽  
Soraya Ulfa Muzayanha ◽  
Mintarsih Rahmawati ◽  
Hendri Widiyandari ◽  
Wahyudi Sutopo ◽  
...  
Keyword(s):  
Spray Pyrolysis ◽  
High Performance ◽  
Layer Structure ◽  
Precursor Solution ◽  
Solution Concentration ◽  
Spray Pyrolysis Method ◽  
Flame Spray ◽  
Sem Images ◽  
Artificial Graphite ◽  
Precursor Solution Concentration

The high throughput and rapid flame-assisted spray pyrolysis method has been adapted to synthesize cathode materials LiNi0.apCo0.15Al0.035O2 (NCA). This method is considered low cost and simple. By varying the precursor solution concentration and sintering temperature, the optimal condition was established at temperature sintering of 800 °C and precursor solution concentration of 1 M. X-ray diffraction patterns showed the as-prepared NCA particles exhibit a pure well-ordered hexagonal layer structure with high crystallinity. Polyhedral shaped micro-sized particles are confirmed by SEM images. Galvanostic charge–discharge tests were conducted using cylindrical full-cell utilizing artificial graphite as the anode. The highest specific initial discharge capacity measured between 2.7 and 4.3 V is 155 mAh g−1 with capacity retention of 92% after cycled at 0.2 C for 50 cycles. Thus, this method is considered as a satisfying approach for NCA mass production.

PENGARUH LAJU ALIR GAS PEMBAKAR (LPG) TERHADAP PEMBUATAN KATALIS HETEROGEN NANOKOMPOSIT ZnO/Fe 2 O 3

EKUILIBIUM ◽  
2014 ◽  
Vol 13 (2) ◽  
Author(s):  
Arif Jumari
Keyword(s):  
Spray Pyrolysis ◽  
Alternative Energy ◽  
Particle Diameter ◽  
Precursor Solution ◽  
Flame Spray Pyrolysis ◽  
Esterification Reaction ◽  
Spray Pyrolysis Method ◽  
Flame Spray ◽  
Bag Filter ◽  
Bet Analysis

<p>Abstract: Biodiesel as alternative energy can be produced by trans-esterification reaction of<br />vegetable oils or animal oils with homogeneous or heterogeneous catalysts. Heterogeneous<br />catalysts have several advantages over homogeneous catalysts that it is easier to be separated.<br />ZnO is one of the compounds that it has very high catalytic properties with a yield of 86.1%.<br />Making the catalyst is easier to be separated, Fe<br />2<br />O<br />3<br />is added to the matrix of ZnO. This<br />research was conducted to determine the effect of flow rate of burner gas (LPG) to the size of<br />catalyst particles with a fixed precursor composition (1:1) using a flame spray pyrolysis method.<br />The first procedure performed was nebulizing the precursor solution of Zn(NO<br />3<br />,<br />then the droplet was flowed through the tube to the burner. At the same time, turning on the<br />carrier gas and the burner gas (LPG) through inner pipe and annulus. Solids from the<br />combustion in the burner were sipped with exhauster and solid nanoparticles were filtered using<br />a bag filter. Then the solid product were separated from bag filter for further analysis. The<br />results were analyzed by XRD, SEM, and BET. From the results of XRD analysis, it was known<br />that the nanocomposite particles obtained were ZnO/Fe<br />2<br />O<br />3<br />. The results of SEM analysis<br />showed that the particles only have some nano-sized particles. They consisted of particles of<br />about 1 nm to 100 nm with percentage 35%; some submicron-sized particles (101 nm to 500<br />nm with percentage 45%; and some micron-sized particles (more than 500 nm) with percentage<br />20%. While the results of BET analysis described the specific area of particles, so that the<br />particle diameter could be calculated. It showed that the particles were nano-sized, namely<br />26.652 – 133.771 nm.<br />Keywords: nanocomposite, burner gas, flame spray pyrolysis<br />)2<br />and Fe(NO<br />3<br />)3</p>

Synthesis of Yttria-Stabilized Zirconia Particles by Flame Spray Pyrolysis Method

2012 ◽  
Vol 629 ◽  
pp. 70-74
Author(s):  
Xiong Zhou ◽  
Wen Jun Kong
Keyword(s):  
Spray Pyrolysis ◽  
Synthesis Method ◽  
Precursor Solution ◽  
Yttria Stabilized Zirconia ◽  
Flame Spray Pyrolysis ◽  
Spray Pyrolysis Method ◽  
Flame Spray ◽  
Stabilized Zirconia ◽  
Barrier Coating ◽  
Size And Morphology

This paper presented a novel synthesis method for yttria-stabilized zirconia (YSZ) by using the flame spray pyrolysis (FSP) method. Spherical and dense YSZ particles for thermal barrier coating were successfully synthesized by FSP from the nebulized precursor solution. XRD results revealed that the YSZ powder is only composed of tetragonal phase particles. Most particles are a few hundred nanometers in diameter and their sizes are mainly dependent on the concentration of the precursor solution, while flame condition has little effect. Particle size and morphology are greatly affected by the precursor composition. Particles synthesized from ethanol precursor solution are more uniform and better-defined than those from aqueous solution.

scholarly journals Flame-Assisted Spray Pyrolysis Using an Annular Flame Nozzle with Decoupled Velocity Control

2018 ◽  
Vol 2 (4) ◽  
pp. 75
Author(s):  
Maxym Rukosuyev ◽  
Syed Baqar ◽  
Jungsoo Nam ◽  
Huitaek Yun ◽  
Martin Jun
Keyword(s):  
Spray Pyrolysis ◽  
Process Parameters ◽  
Flame Temperature ◽  
Precursor Solution ◽  
Flame Spray Pyrolysis ◽  
Spray Pyrolysis Method ◽  
Flame Spray ◽  
Flexible Control ◽  
Flexible System ◽  
Average Size

Flame spray pyrolysis, widely used in chemical industries, is a technology to synthesize nanoparticles. While the flame spray pyrolysis uses fuels as a solution liquid, the flame-assisted spray pyrolysis method uses aqueous solutions. Since process parameters such as concentration of precursor, size of droplets, and ratio of the air–gas mixture affect the size of nanoparticles, developing a flexible system to control these parameters is required. This paper proposes a new type of nozzle system to produce nanoparticles using flame-assisted spray pyrolysis. The annular nozzle design allows flexible control of particle flow and temperature, and an ultrasonic nebulizer was used to produce droplets with different size. Experiments were conducted to analyze the relationship between nanoparticle size and process parameters, concentration of precursor, frequency of the atomizer, and flame temperature. A precursor solution consisting of silver nitrate (AgNO3) mixed in deionized water is used. The effects of the process parameters are discussed, and analysis of the nanoparticles shows that silver nanoparticles are deposited with an average size of 25~115 nm.

Solution-Processed High-Performance of p-Channel Copper-Tin-Sulphur Thin-Film Transistor

2021 ◽  
Author(s):  
Narendra Naik Mude ◽  
Ravindra Naik Bukke ◽  
Jin Jang
Keyword(s):  
Thin Film ◽  
High Performance ◽  
Thin Film Transistor ◽  
Precursor Solution ◽  
Solution Concentration ◽  
Tin Sulfide ◽  
Solution Processed ◽  
Systematic Analysis ◽  
Precursor Solution Concentration ◽  
P Type

We introduce in this paper a solution-processed copper tin sulfide (CTS) thin film by varying CTS precursor solution concentration for p-type thin-film transistor (TFT). The systematic analysis for optical and...

scholarly journals Structural and Morphological Properties of Nanostructured ZnO Particles Grown by Ultrasonic Spray Pyrolysis Method with Horizontal Furnace

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
G. Flores-Carrasco ◽  
J. Carrillo-López ◽  
J. A. Luna-López ◽  
R. Martínez-Martínez ◽  
N. D. Espinosa-Torres ◽  
...  
Keyword(s):  
Zno Nanoparticles ◽  
Ultrasonic Spray Pyrolysis ◽  
Precursor Solution ◽  
Solution Concentration ◽  
Spray Pyrolysis Method ◽  
Secondary Particles ◽  
Ultrasonic Spray ◽  
Pyrolysis Method ◽  
Precursor Solution Concentration ◽  
Horizontal Furnace

ZnO nanoparticles were synthesized in a horizontal furnace at 500°C using different zinc nitrate hexahydrate concentrations (0.01 and 0.1 M) as reactive solution by ultrasonic spray pyrolysis method. The physical-chemical properties of synthesized ZnO nanoparticles have been characterized by thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and high resolution transmission electron microscopy (HRTEM). With the TGA is has optimized the temperature at which the initial reactive (Zn(NO3)2·6H2O), is decomposed completely to give way to its corresponding oxide, ZnO. SEM revealed secondary particles with a quasispherical shape that do not change significantly with the increasing of precursor solution concentration as well as some content of the broken spheres. Increasing the precursor solution concentration leads to the increase in the average size of ZnO secondary particles from248±73to470±160 nm; XRD reveals the similar tendency for the crystallite size which changes from23±4to45±4 nm. HRTEM implies that the secondary particles are with hierarchical structure composed of primary nanosized subunits. These results showed that the precursor concentration plays an important role in the evolution on the size, stoichiometry, and morphology of ZnO nanoparticles.

Effect of Tin Oxide Coatings by Spray Pyrolysis Process on Mechanical Properties of Aluminium, Brass and Mild Steel

2021 ◽  
Vol 13 (2) ◽  
Author(s):  
M. Shunmugasundaram ◽  
A. Praveenkumar ◽  
L. Ponraj Sankar ◽  
S. Sivasankar
Keyword(s):  
Mechanical Properties ◽  
Mild Steel ◽  
Substrate Temperature ◽  
Spray Pyrolysis ◽  
Tin Oxide ◽  
Microstructural Analysis ◽  
Solution Concentration ◽  
Solution Flow Rate ◽  
Spray Pyrolysis Method ◽  
Solution Flow

Mechanical properties of materials are enhanced by different methods to increase the usage of the materials. In this research spray pyrolysis method is employed to increase the mechanical characteristics of three different materials. The tin oxide is chosen as coated material and aluminium, brass, mild steel are selected as substrate materials. The 500nm thin film is developed over the substrate materials by spray pyrolysis. The substrate temperature are chosen as 300? C for aluminium, 400? C for brass and mildsteel. Nozzle to substrate distance is 0.4 m, substrate temperature is 300? C for aluminium and 400? C for solution concentration as 0.2 mole and solution flow rate is 1ml/min are selected for constant deposition parameters. The hardness and tensile strength result clearly shows that strength is increased by adding the coating over the surface. The material is heated above crystallization temperature and SnO2 increases the tensile and hardness strength of the materials. The triangular metrological microscope is used to examine the microstructure of non coated and coated substrate materials. The microstructural analysis is showed that the uncoated surface of the substrate material is full of rough and pores. And displays that the tin oxide coated surface of the substrates after the initial deposition disclosed a surface with a agglomeration of tin oxide in homogeneous and uniform than the uncoated substrates.

Dried plum-like ZnO assemblies consisted of ZnO nanoparticles synthesized by ultrasonic spray pyrolysis

2019 ◽  
Vol 34 (01n03) ◽  
pp. 2040005 ◽  
Author(s):  
Congzhi Zhang ◽  
Tao Han ◽  
Wei Wang ◽  
Jin Zhang
Keyword(s):  
Electron Microscopy ◽  
Spray Pyrolysis ◽  
Field Emission ◽  
Zno Nanoparticles ◽  
Ultrasonic Spray Pyrolysis ◽  
Precursor Solution ◽  
Spray Pyrolysis Method ◽  
X Ray Diffraction ◽  
Ultrasonic Spray ◽  
Transmission Electron

Dried plum-like ZnO assemblies consisting ZnO nanoparticles were synthesized by an ultrasonic spray pyrolysis method (USP). ZnO assemblies were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), energy-dispersive spectroscopy (EDS) and field-emission transmission electron microscopy (TEM). The results show the size of ZnO assemblies is in the range of 300–870 nm, and that of ZnO nanoparticles is from 33 nm to 39 nm. The microstructure and size of ZnO assemblies were successfully controlled by the concentration of the precursor solution.

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