P J Sebastian
Biographic Data
| ID | 8991521 |
|---|---|
| NAME | P J Sebastian |
| GIVEN NAMES | P J |
| FAMILY NAME | Sebastian |
| SIGNATURE | SEBASTIAN P J |
| AFFILIATIONS | Instituto Tecnológico y de Energías Renovables |
| ORCID | 0000-0003-1810-6674 |
| VERIFIED | Yes |
| TOTAL WORKS | 19 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 19 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2011 |
| LATEST PUBLICATION YEAR | 2018 |
| H-INDEX | 0 |
Design and Development of a Real-time Characterization System for Energy Conversion Devices
In this communication it is presented an electronic system for acquiring data from experimental energy conversion devices such as solar cells and fuel cells for micro-electronic applications. The electronic system consists of a software installed in a personal computer and an electronic circuit coupled to a four-wire terminal where the electrical variables like voltage and current can be measured from experimental cells. The software contains a f…
Structural and Optical Characterization of ZnO and Glucose Capped ZnO Nanoparticles
Zinc Oxide and Glucose capped Zinc Oxide nanoparticles have been prepared using modified chemical reaction method. X-ray diffraction analysis showed that the prepared samples possess polycrystalline nature with hexagonal structure. Surface morphology has been analyzed using scanning electron microscopy. The estimated value of band gap was found to be 3.41 and 3.87 eV for Zinc Oxide and Glucose capped ZnO respectively. Fourier Transform Infrared s…
Development and Characterization of an Ecological Hydrogen Stove
In this work we developed and evaluated an ecological stove for food cooking, using hydrogen as the fuel. The operation of the device consists mainly of a renewable energy source, such as a photovoltaic system, which produces the electricity needed to power a bipolar alkaline electrolyzer from 1 kW to 1.9 kW, consisting of 85 stainless steel electrodes, which generates hydrogen for combustion in the cooking system. The prototype evaluation consis…
Thermally Deposited Sb2S3
In recent years there has been growing interest in the materials suitable for real time storage application. Sb2S3 is a prospective material in this regard due to good photoconductivity. In this contest, thin films of Sb2S3 and Bi3+ doped Sb2S3 were deposited onto the transparent glass substrate by thermal evaporation method. The structural, optical and electrical properties were investigated by XRD, UV-Visible, Photoluminescence, and Impedance s…
Development of Gold Electrodes for Microbial Fuel Cells
The microbial fuel cell (MFC) has been an important subject of study in the last decades because of its technological significance that one can produce hydrogen or electricity by wastewater treatment (bio-remediation). One of the main issues for the application of these devices on large scale is the processes and materials for the electrode fabrication. The cathode for MFC requires a catalyst to perform the reduction reaction and this work presen…
Effect of Microwave Irradiation Synthesis of ZnO Nanoparticles
Zinc Oxide nanoparticles were synthesized from zinc acetate by microwave irradiation method. X-ray diffraction patterns showed that the prepared samples found to exhibit hexagonal structure. Surface morphology and presence of elements have been analyzed using scanning electron microscopy and energy dispersive analysis by X-rays. The presence of stretching and bending modes in the prepared samples has been determined using Fourier transform infrar…
Influence of TiO2 as Filler on the Discharge Characteristics of a Proton Battery
Different concentrations of TiO2 dispersed nano-composite proton conducting polymer electrolyte membranes were prepared using solution casting technique. Fourier Transform Infrared Spectroscopic analysis was carried out to determine the vibrational investigations about the prepared membranes. Variation of conductivity due to the incorporation of TiO2 in polymer blend electrolyte was analyzed using Electrochemical Impedance Spectroscopy and the va…
A Heterojunction Based on Macro-porous Silicon and Zinc Oxide for Solar Cell Application
Transparent and conductive Al doped zinc oxide (AZO) films were reactively sputtered from metallic targets onto macro-porous silicon (MPS) substrate to fabricate a heterojunction interface structure. A tungsten oxide (WO3) thin film was placed between metallic aluminum back contact and bulk silicon to extract photogenerated holes from the absorber. Due to the susceptibility of PS to naturally oxidize over the period of time, a thin film of SiO2 w…
Synthesis and Functionalization of L, DL-Iso, Nor, Leucine on Porous Silicon for Sensing Application
The etching process of Porous Silicon has been carried out using an electrochemical oxidation technique. Oxidized samples were immobilized with -Leucine, DL-Iso Leucine and DL-Nor Leucine solutions. Surface morphology and optical properties of the samples have been analyzed using scanning electron microscopy and optical absorption analysis techniques respectively. The bonding characteristics on the surface before and after amino acid deposition h…
Effect of X-ray Irradiation on Dielectric Properties of Polymer Electrolytes Complexed with LiCF3SO3
Solid polymer electrolytes of polyethylene oxide (PEO) embedded with LiCF3SO3 was prepared and subjected to X-ray irradiation of different dosages (1.5 to 6 Gy). Ionic conductivity and dielectric studies were made over a frequency range of 100 Hz to 490 KHz. A little increase in ionic conductivity was noted for the sample irradiated for 1.5 Gy and the equivalent circuit remained unaltered for irradiated samples. Remarkable increase in dielectric …
Electroanalysis of Diazepam on Nanosize Conducting Poly (3-Methylthiophene) Modified Glassy Carbon Electrode
A glassy carbon electrode (GCE) was modified with nanosize poly (3-methylthiophene) (P3MT) and used for the sensitive voltammetric determination of diazepam. The cyclic voltammetric response of the bare GCE was compared with the P3MT modified electrode. Electrochemical impedance response of diazepam on modified GCE was studied by various concentrations of diazepam from 0.2 μM to 0.6 μM. The poly (3-methylthiophene) modified glassy carbon electrod…
Investigations on the Effect of Chitin Nanofiber in PMMA Based Solid Polymer Electrolyte Systems
Polymer electrolyte membranes find application in a variety of fields such as battery systems, fuel cells, sensors and other electrochemical devices. In this paper we have done some investigations on the effect of chitin nanofiber (CNF) in PMMA based solid polymer electrolyte systems. CNF was synthesized from shrimp cell chitin by stepwise purification and acid hydrolysis method. PMMA basedelectrolyte films containing different concentrations of …
Effect of Chitin Nanofibres on the Electrochemical and Interfacial Properties of Composite Solid Polymer Electrolytes
Chitin nanofibres (CNF) are synthesized from a biopolymer chitin by ultra-pure chemical curing method. The nanocomposite solid polymer electrolytes (CSPE) based on PEO-LiBOB with chitin nanofibres as inert nanofiller are prepared by membrane hot-press method. The polymer membrane obtained is subjected to various electrochemical studies such as impedance analysis, cyclic voltammetry and compatibility studies. The crystalline behavior and structura…
Electrical and Dielectric Behavior of Nano-bio Ceramic Filler Incorporated Polymer Electrolytes for Rechargeable Lithium Batteries
A series of nanocomposite solid polymer electrolytes (NCSPE) consisting of PMMA as host polymer, lithium bisoxalatoborate (LiBOB) as doping salt and nano-hydroxy apatite as filler have prepared by membrane hot-press method. To enhance the electrochemical properties and stiffness of polymer electrolyte film, a bioactive ceramic filler nano-hydroxy apatite is incorporated in the polymer matrix. The prepared different weight contents of NCSPE films …
Growth and Characterization of Electroplated Copper Selenide Thin Films
Copper Selenide thin films have been prepared on indium doped tin oxide coated conducting glass substrates from an aqueous electrolytic bath consists of CuSO4 and SeO2 using potentiostatic electrodeposition technique. Deposition mechanism has been analyzed using cyclic voltammetry. X-ray diffraction pattern showed that the prepared films possess polycrystalline nature with hexagonal structure. Film composition and surface morphology showed that f…
Simulation of Flow Field Pattern Influence on the Hydrogen Consumption in A PEMFC
Simulations results are presented in this paper, which were obtained on investigating the effects of flow patterns on the hydrogen consumption in a proton exchange membrane fuel cell (PEMFC). In this study, a 3-D computational model was developed to investigate the influence of the flow and depth of the channels on hydrogen consumption. Simulation results showed the influence of depth in the distribution of hydrogen concentration. The flow channe…
Evaluation of the Corrosion Resistance of Fe 40 Al 60 Intermetallics in Molten Carbonate (Li+K)
Alloys of the intermetallic material based on Fe40Al60 and the alloys formed with addition of Ag constitute a new alternative to improve the problems of corrosion resistance and electrical conductivity. The electrochemical characterization was employed to evaluate the corrosion resistance of the materials for being used as bipolar plates in molten carbonate fuel cells (MCFC). These characterizations were done under similar conditions as the worki…
Annealing Effects on the Properties of Electrodeposited CdSSe Thin Films
The effect of post heat treatment on structural, morphological and optical properties of electrodeposited CdSSe solid solution thin films were studied using X-ray diffractometer (XRD), scanning electron microscopy (SEM), and UV-Vis-NIR spectrophotometer, respectively. X-ray diffraction patterns revealed that polycrystalline nature with hexagonal structure of CdSSe thin films. Also the microstructural properties are calculated tends to increase an…
Electrosynthesis and Studies on CdZnSe Thin Films
Electrodeposited CdZnSe thin films have been prepared at various bath temperatures. The thickness of the films was estimated between 850 nm and 1500 nm by stylus method. The X-ray diffraction patterns revealed that the polycrystalline nature with cubic structure of CdZnSe alloy thin films. Microstructural properties such as, crystallite size, dislocation density, microstrain and number of crystallites per unit area were calculated using predomina…
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Evaluation of the Corrosion Resistance of Fe 40 Al 60 Intermetallics in Molten Carbonate (Li+K)
Alloys of the intermetallic material based on Fe40Al60 and the alloys formed with addition of Ag constitute a new alternative to improve the problems of corrosion resistance and electrical conductivity. The electrochemical characterization was employed to evaluate the corrosion resistance of the materials for being used as bipolar plates in molten carbonate fuel cells (MCFC). These characterizations were done under similar conditions as the worki…
Annealing Effects on the Properties of Electrodeposited CdSSe Thin Films
The effect of post heat treatment on structural, morphological and optical properties of electrodeposited CdSSe solid solution thin films were studied using X-ray diffractometer (XRD), scanning electron microscopy (SEM), and UV-Vis-NIR spectrophotometer, respectively. X-ray diffraction patterns revealed that polycrystalline nature with hexagonal structure of CdSSe thin films. Also the microstructural properties are calculated tends to increase an…
Electrosynthesis and Studies on CdZnSe Thin Films
Electrodeposited CdZnSe thin films have been prepared at various bath temperatures. The thickness of the films was estimated between 850 nm and 1500 nm by stylus method. The X-ray diffraction patterns revealed that the polycrystalline nature with cubic structure of CdZnSe alloy thin films. Microstructural properties such as, crystallite size, dislocation density, microstrain and number of crystallites per unit area were calculated using predomina…
Effect of Chitin Nanofibres on the Electrochemical and Interfacial Properties of Composite Solid Polymer Electrolytes
Chitin nanofibres (CNF) are synthesized from a biopolymer chitin by ultra-pure chemical curing method. The nanocomposite solid polymer electrolytes (CSPE) based on PEO-LiBOB with chitin nanofibres as inert nanofiller are prepared by membrane hot-press method. The polymer membrane obtained is subjected to various electrochemical studies such as impedance analysis, cyclic voltammetry and compatibility studies. The crystalline behavior and structura…
Electrical and Dielectric Behavior of Nano-bio Ceramic Filler Incorporated Polymer Electrolytes for Rechargeable Lithium Batteries
A series of nanocomposite solid polymer electrolytes (NCSPE) consisting of PMMA as host polymer, lithium bisoxalatoborate (LiBOB) as doping salt and nano-hydroxy apatite as filler have prepared by membrane hot-press method. To enhance the electrochemical properties and stiffness of polymer electrolyte film, a bioactive ceramic filler nano-hydroxy apatite is incorporated in the polymer matrix. The prepared different weight contents of NCSPE films …
Growth and Characterization of Electroplated Copper Selenide Thin Films
Copper Selenide thin films have been prepared on indium doped tin oxide coated conducting glass substrates from an aqueous electrolytic bath consists of CuSO4 and SeO2 using potentiostatic electrodeposition technique. Deposition mechanism has been analyzed using cyclic voltammetry. X-ray diffraction pattern showed that the prepared films possess polycrystalline nature with hexagonal structure. Film composition and surface morphology showed that f…
Simulation of Flow Field Pattern Influence on the Hydrogen Consumption in A PEMFC
Simulations results are presented in this paper, which were obtained on investigating the effects of flow patterns on the hydrogen consumption in a proton exchange membrane fuel cell (PEMFC). In this study, a 3-D computational model was developed to investigate the influence of the flow and depth of the channels on hydrogen consumption. Simulation results showed the influence of depth in the distribution of hydrogen concentration. The flow channe…
Effect of X-ray Irradiation on Dielectric Properties of Polymer Electrolytes Complexed with LiCF3SO3
Solid polymer electrolytes of polyethylene oxide (PEO) embedded with LiCF3SO3 was prepared and subjected to X-ray irradiation of different dosages (1.5 to 6 Gy). Ionic conductivity and dielectric studies were made over a frequency range of 100 Hz to 490 KHz. A little increase in ionic conductivity was noted for the sample irradiated for 1.5 Gy and the equivalent circuit remained unaltered for irradiated samples. Remarkable increase in dielectric …
Electroanalysis of Diazepam on Nanosize Conducting Poly (3-Methylthiophene) Modified Glassy Carbon Electrode
A glassy carbon electrode (GCE) was modified with nanosize poly (3-methylthiophene) (P3MT) and used for the sensitive voltammetric determination of diazepam. The cyclic voltammetric response of the bare GCE was compared with the P3MT modified electrode. Electrochemical impedance response of diazepam on modified GCE was studied by various concentrations of diazepam from 0.2 μM to 0.6 μM. The poly (3-methylthiophene) modified glassy carbon electrod…
Investigations on the Effect of Chitin Nanofiber in PMMA Based Solid Polymer Electrolyte Systems
Polymer electrolyte membranes find application in a variety of fields such as battery systems, fuel cells, sensors and other electrochemical devices. In this paper we have done some investigations on the effect of chitin nanofiber (CNF) in PMMA based solid polymer electrolyte systems. CNF was synthesized from shrimp cell chitin by stepwise purification and acid hydrolysis method. PMMA basedelectrolyte films containing different concentrations of …
Influence of TiO2 as Filler on the Discharge Characteristics of a Proton Battery
Different concentrations of TiO2 dispersed nano-composite proton conducting polymer electrolyte membranes were prepared using solution casting technique. Fourier Transform Infrared Spectroscopic analysis was carried out to determine the vibrational investigations about the prepared membranes. Variation of conductivity due to the incorporation of TiO2 in polymer blend electrolyte was analyzed using Electrochemical Impedance Spectroscopy and the va…
A Heterojunction Based on Macro-porous Silicon and Zinc Oxide for Solar Cell Application
Transparent and conductive Al doped zinc oxide (AZO) films were reactively sputtered from metallic targets onto macro-porous silicon (MPS) substrate to fabricate a heterojunction interface structure. A tungsten oxide (WO3) thin film was placed between metallic aluminum back contact and bulk silicon to extract photogenerated holes from the absorber. Due to the susceptibility of PS to naturally oxidize over the period of time, a thin film of SiO2 w…
Synthesis and Functionalization of L, DL-Iso, Nor, Leucine on Porous Silicon for Sensing Application
The etching process of Porous Silicon has been carried out using an electrochemical oxidation technique. Oxidized samples were immobilized with -Leucine, DL-Iso Leucine and DL-Nor Leucine solutions. Surface morphology and optical properties of the samples have been analyzed using scanning electron microscopy and optical absorption analysis techniques respectively. The bonding characteristics on the surface before and after amino acid deposition h…
Development of Gold Electrodes for Microbial Fuel Cells
The microbial fuel cell (MFC) has been an important subject of study in the last decades because of its technological significance that one can produce hydrogen or electricity by wastewater treatment (bio-remediation). One of the main issues for the application of these devices on large scale is the processes and materials for the electrode fabrication. The cathode for MFC requires a catalyst to perform the reduction reaction and this work presen…
Effect of Microwave Irradiation Synthesis of ZnO Nanoparticles
Zinc Oxide nanoparticles were synthesized from zinc acetate by microwave irradiation method. X-ray diffraction patterns showed that the prepared samples found to exhibit hexagonal structure. Surface morphology and presence of elements have been analyzed using scanning electron microscopy and energy dispersive analysis by X-rays. The presence of stretching and bending modes in the prepared samples has been determined using Fourier transform infrar…
Design and Development of a Real-time Characterization System for Energy Conversion Devices
In this communication it is presented an electronic system for acquiring data from experimental energy conversion devices such as solar cells and fuel cells for micro-electronic applications. The electronic system consists of a software installed in a personal computer and an electronic circuit coupled to a four-wire terminal where the electrical variables like voltage and current can be measured from experimental cells. The software contains a f…
Structural and Optical Characterization of ZnO and Glucose Capped ZnO Nanoparticles
Zinc Oxide and Glucose capped Zinc Oxide nanoparticles have been prepared using modified chemical reaction method. X-ray diffraction analysis showed that the prepared samples possess polycrystalline nature with hexagonal structure. Surface morphology has been analyzed using scanning electron microscopy. The estimated value of band gap was found to be 3.41 and 3.87 eV for Zinc Oxide and Glucose capped ZnO respectively. Fourier Transform Infrared s…
Development and Characterization of an Ecological Hydrogen Stove
In this work we developed and evaluated an ecological stove for food cooking, using hydrogen as the fuel. The operation of the device consists mainly of a renewable energy source, such as a photovoltaic system, which produces the electricity needed to power a bipolar alkaline electrolyzer from 1 kW to 1.9 kW, consisting of 85 stainless steel electrodes, which generates hydrogen for combustion in the cooking system. The prototype evaluation consis…
Thermally Deposited Sb2S3
In recent years there has been growing interest in the materials suitable for real time storage application. Sb2S3 is a prospective material in this regard due to good photoconductivity. In this contest, thin films of Sb2S3 and Bi3+ doped Sb2S3 were deposited onto the transparent glass substrate by thermal evaporation method. The structural, optical and electrical properties were investigated by XRD, UV-Visible, Photoluminescence, and Impedance s…
Materials Science (18 works) · Chemistry (16 works) · Composite material (10 works) · Electrode (10 works) · Nanotechnology (10 works) · Chemical Engineering (9 works) · Optoelectronics (8 works) · Metallurgy (7 works) · Band gap (6 works) · Electrochemistry (6 works)