scholarly journals Performance of full-cell Na-ion with NaNi1/3Mn1/3Co1/3O2 cathode material and different carbonate-based electrolytes

2020 ◽  
Vol 4 (4) ◽  
pp. First
Author(s):  
Hoang Van Nguyen ◽  
Minh Le Nguyen ◽  
Man Van Tran ◽  
Nhan Thanh Tran ◽  
Phung My Loan Le
Keyword(s):  
Cathode Material ◽  
Anode Materials ◽  
Low Cost ◽  
Sol Gel ◽  
High Rate ◽  
X Ray Diffraction ◽  
Metal Anode ◽  
Full Cell ◽  
Dominant Phase ◽  
Initial Capacity

The battery performance not only depend on the electrodes nature but also depend on the choice of electrolyte consisting of salts and organic solvents. The development of electrolytes compatible with both cathode and anode materials is essential for enhancing the performance of practical full-cell Na-ion batteries. Among electrode with difference Ni/Mn/Co ratio, NaNi1/3Mn1/3Co1/3O2 (NMC) showed the best stable cycling. Besides, carbonaceous anode materials such as hard carbon (HC) are attracting due to it low cost, high gravity/volumetric capacity. In this work, the electrochemical performance of full-cell Na-ion including NMC as cathode and HC as anode was studied in difference carbonate-based electrolytes with 2wt%FEC as additive. The cathode material was synthesized by sol-gel reaction following a calcination at 900oC for 12 hours. X-ray diffraction result of the synthesized sample indicates a layered structure with mutual O3 and P2 phase intergrowth and the dominant phase is O3. The impurity phase NiO also presents with negligeable content. In half-cell configuration with sodium metal anode, the material exhibited a typical staircase chargedischarge profile in various electrolytes. The highest capacity of 106 mAh/g with stable clycing up to 50 cycles was obtained in the electrolyte NaClO4 1 M/PC+2wt%FEC. However, this electrolyte couldn't enable the cycling the full-cell HC||NMC due to the incompatibility with HC anode. In consequence, the initial capacity of full-cell in this electrolyte was only 30 mAh/g and significantly decreased in consecutive cycles. Meanwhile, the electrolytes without PC or with low PC content tend to improve the charge/discharge capacity and the cycle life as well. Indeed, full-cell HC||NMC using NaClO4 1M/EC-DMC (1:1) + 2wt%FEC electrolyte exhibited the highest capacity of 90 mAh/g and excellent capacity retention (90% of the initial capacity) after 50 cycles. Additionally, the full-cell could deliver capacity of 55 mAh/g at high rate up to 2C.

Enhanced high rate performance of Li[Li0.17Ni0.2Co0.05Mn0.58−xAlx]O2−0.5x cathode material for lithium-ion batteries

RSC Advances ◽  
2015 ◽  
Vol 5 (61) ◽  
pp. 49651-49656 ◽  
Author(s):  
Y. L. Wang ◽  
X. Huang ◽  
F. Li ◽  
J. S. Cao ◽  
S. H. Ye
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Sol Gel ◽  
Lithium Ion ◽  
High Rate ◽  
Rate Performance ◽  
High Rate Performance

Pristine LNCM and LNCMA as Li-rich cathode materials for lithium ion batteries were synthesized via a sol–gel route. The Al-substituted LNCM sample exhibits an enhanced high rate performance and superior cyclability.

Electrochemical Performance of La0.7Sr0.3Cu1-xFexO3-δ as Cathode Material in IT-SOFCs

2010 ◽  
Vol 160-162 ◽  
pp. 666-670
Author(s):  
Min Zhang Zheng ◽  
Xiao Mei Liu
Keyword(s):  
Electrical Conductivity ◽  
High Temperature ◽  
Cathode Material ◽  
Single Phase ◽  
Cathodic Polarization ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cathodic Overpotential ◽  
A Current

To obtain more detail information about the cathode of La0.7Sr0.3Cu1-xFexO3-δ（x= 0.1,0.3,0.5,0.7,0.9）in IT-SOFCs, the cathode material La0.7Sr0.3Cu1-xFexO3-δ（x=0.1, 0.3, 0.5, 0.7, 0.9）was synthesized by a sol-gel method. X-ray diffraction revealed it to be form a single phase of perovskite. The high temperature electrical conductivity was measured by using the four-point dc technique, and cathodic overpotential with SDC（Sm0.15Ce0.85O1.925） electrolyte support was measured by using a current-interruption technique. The investigation of electrocheimical properties suggested that La0.7Sr0.3Cu0.7Fe0.3O3-δ has the highest electrical conductivity and the lowest cathodic polarization. Using La0.7Sr0.3Cu0.7Fe0.3O3-δ as cathode and 65%NiO/SDC as anode based on SDC electrolyte one can obtain higher current density and power density at intermediate temperatures, La0.7Sr0.3Cu0.7Fe0.3O3-δ is considered to be a possible cathode adapted to IT-SOFCs.

Facile Synthesis of Cu2SnSe3 Thin Film via Sol-Gel Process

2014 ◽  
Vol 1004-1005 ◽  
pp. 774-777 ◽  
Author(s):  
Ji Wan Liu ◽  
Gui Lin Chen ◽  
Wei Feng Liu ◽  
Guo Shun Jiang ◽  
Chang Fei Zhu
Keyword(s):  
Low Cost ◽  
Sol Gel ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
X Ray Diffraction ◽  
X Ray ◽  
Absorbance Spectroscopy ◽  
Sol Gel Process ◽  
Ar Gas ◽  
Pure Cu

A low-cost non-vacuum process for fabrication of Cu2SnSe3 film by sol-gel method and knife-coating process is described. First, a certain amount of Copper (I) chloride and tin (IV) tetrachloride was dissolve into the mixture of water and alcohol and then some Polyvinyl Pyrrolidone (PVP) was added to the solution to obtain based colloidal solution. Next, precursor thin layer was deposited by knife-blading technique on soda-lime glass (SLG). Finally, precursor layer was annealed at selenium flow atmosphere carried by Ar gas at 550oC. Through X-ray diffraction (XRD) and Raman spectra, it is found that pure Cu2SnSe3 film was prepared successfully. Scanning electron microscopy (SEM) and UV–vis–NIR absorbance spectroscopy were used to characterize its morphology and optical bandgap.

Effect of Nitrogen Doping on the Phase Evolution of the TiO2 Nanoparticles

2013 ◽  
Vol 829 ◽  
pp. 902-906 ◽  
Author(s):  
Mohammad Derakhshani ◽  
Hossein Abdizadeh ◽  
Mohammad Reza Golobostanfard
Keyword(s):  
Nitrogen Doping ◽  
Low Cost ◽  
Sol Gel ◽  
Phase Evolution ◽  
Industrial Applications ◽  
X Ray Diffraction ◽  
X Ray ◽  
Method Effects ◽  
Alkoxide Precursor ◽  
Photocatalytic Material

Recently photocatalytic materials have been used in variety of industrial applications. TiO2 is the only suitable photocatalytic material for industrial usage due to its benefits such as non-toxicity, stability, and low cost. TiO2 nanoparticles were successfully synthesized from titanium alkoxide precursor by sol-gel method. Effects of nitrogen doping on the microstructure and phase evolution of the TiO2 nanoparticles were investigated. The X-ray diffraction results of doped samples confirm the presence of anatase as the only crystalline phase. The addition of nitrogen in titania matrix leads to disappearance of rutile traces. The scanning electron microscopy show that TiO2 nanoparticle size decreases by increasing nitrogen doping. Furthermore, DSC-TG results reveal that the crystallization temperature of doped sample shifts to higher temperatures of about 100 °C.

Synthesis and Characterization of Li(Li0.05Ni0.6Fe0.1Mn0.25)O2 Cathode Material for Lithim Ion Batteries

2018 ◽  
Vol 21 (1) ◽  
pp. 051-056
Author(s):  
A. Nichelson ◽  
S. Thanikaikarasan ◽  
K. Karuppasamy ◽  
S. Karthickprabhu ◽  
T. Mahalingam ◽  
...  
Keyword(s):  
Cathode Material ◽  
Sol Gel ◽  
Lithium Ion ◽  
Chelating Agent ◽  
X Ray Diffraction ◽  
Morphological Studies ◽  
New Type ◽  
Ft Ir ◽  
Ir And Raman

A new type of lithium enriched cathode material Li (Li0.05Ni0.6Fe0.1Mn0.25)O2 was synthesized by sol-gel method with citric acid as a chelating agent. The structural and morphological studies were systematically investigated through X-ray diffraction, SEM with EDS, FT-IR and Raman analyses. The crystallite size of the Li (Li0.05Ni0.6Fe0.1Mn0.25)O2 cathode material was found to be 45 nm thereby leads to the feasible movement of lithium ion all through the material. FT-IR spectroscopy was used to confirm the metal-oxygen interaction in the prepared cathode material. The electrical properties of the Li (Li0.05Ni0.6Fe0.1Mn0.25)O2 cathode material were studied by impedance and dielectric spectral analyzes. Li (Li0.05Ni0.6Fe0.1Mn0.25)O2 showed a maximum ionic conductivity of 10-6 S/cm at ambient temperature.

Nanosized Na4Fe(CN)6/C Composite as a Low-Cost and High-Rate Cathode Material for Sodium-Ion Batteries

2012 ◽  
Vol 2 (4) ◽  
pp. 410-414 ◽  
Author(s):  
Jianfeng Qian ◽  
Min Zhou ◽  
Yuliang Cao ◽  
Xinping Ai ◽  
Hanxi Yang
Keyword(s):  
Cathode Material ◽  
Low Cost ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Batteries

Low Cost Integrated Sensors Utilizing Patterned Nano-Structured Titania Arrays Fabricated Using a Simple Process

2004 ◽  
Vol 828 ◽  
Author(s):  
Zuruzi Abu Samah ◽  
Andrei Kolmakov ◽  
Martin Moskovits ◽  
Noel C. MacDonald
Keyword(s):  
Photoelectron Spectroscopy ◽  
Low Cost ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Aqueous Hydrogen Peroxide ◽  
X Ray ◽  
Sensing Systems ◽  
Potential Applications ◽  
Nano Wires ◽  
Low Temperature Process

ABSTRACTUsing a novel low-temperature process, we demonstrate the facile integration of crack-free nanostructured titania (NST) as sensing elements in microsystems. Unlike conventional sol-gel methods, NST layers of interconnected nano-walls and nano-wires were formed by reacting Ti surfaces with aqueous hydrogen peroxide solution. Cracks were observed in NST layers formed on blanket Ti films but absent on arrays of patterned Ti pads below a threshold dimension. Analyses using TEM, high resolution SEM, X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) reveal that NST consists of anatase TiO2 nano-crystals. NST pads were found able to detect oxygen gas of a few ppm. NST pad arrays were integrated on rigid and flexible substrates with potential applications in low cost and wearable sensing systems.

scholarly journals Synthesis of ZnO-CdO Nanocomposites

2013 ◽  
Vol 1 (1) ◽  
pp. 11-14
Author(s):  
N. Sahu ◽  
◽  
R. K. Duchaniya ◽  
Keyword(s):  
Particle Size ◽  
Grain Size ◽  
Low Cost ◽  
Sol Gel ◽  
Particle Size Analysis ◽  
Synthesis Process ◽  
Size Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

The ZnO-CdO nanocomposite was prepared by sol-gel method by using their respective nitrates. It is a simple and low cost method to prepare nanocomposites. The drying temperature and drying period of prepared gel was varied during the synthesis process. The prepared samples were characterized by using scanning electron microscope (SEM), particle size analysis (PSA), X-ray diffraction (XRD) and photoluminescence spectroscopy (PL) to get surface morphology, idea of getting particle of nanosized range so that further characterizations can be done, to study the optical property of synthesized nanocomposite and measure the band gap . The grain size determined by Scherrer’s formula was found to be between 30-50 nm.

scholarly journals MXene/Ag2CrO4 Nanocomposite as Supercapacitors Electrode

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6008
Author(s):  
Tahira Yaqoob ◽  
Malika Rani ◽  
Arshad Mahmood ◽  
Rubia Shafique ◽  
Safia Khan ◽  
...  
Keyword(s):  
Electrochemical Impedance ◽  
Low Cost ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Energy Storage Devices ◽  
X Ray ◽  
Storage Devices ◽  
Bonding Structure ◽  
Electron Transfer Rate Constant ◽  
Co Precipitation

MXene/Ag2CrO4 nanocomposite was synthesized effectively by means of superficial low-cost co-precipitation technique in order to inspect its capacitive storage potential for supercapacitors. MXene was etched from MAX powder and Ag2CrO4 spinel was synthesized by an easy sol-gel scheme. X-Ray diffraction (XRD) revealed an addition in inter-planar spacing from 4.7 Å to 6.2 Å while Ag2CrO4 nanoparticles diffused in form of clusters over MXene layers that had been explored by scanning electron microscopy (SEM). Energy dispersive X-Ray (EDX) demonstrated the elemental analysis. Raman spectroscopy opens the gap between bonding structure of as-synthesized nanocomposite. From photoluminence (PL) spectra the energy band gap value 3.86 eV was estimated. Electrode properties were characterized by applying electrochemical observations such as cyclic voltammetry along with electrochemical impedance spectroscopy (EIS) for understanding redox mechanism and electron transfer rate constant Kapp. Additionally, this novel work will be an assessment to analyze the capacitive behavior of electrode in different electrolytes such as in acidic of 0.1 M H2SO4 has specific capacitance Csp = 525 F/g at 10 mVs−1 and much low value in basic of 1 M KOH electrolyte. This paper reflects the novel synthesis and applications of MXene/Ag2CrO4 nanocomposite electrode fabrication in energy storage devices such as supercapacitors.

scholarly journals Electric polarization properties of BaTiO3-BiFeO3 as nanomultiferroic material produced by sol-gel method

2018 ◽  
Vol 204 ◽  
pp. 05005 ◽  
Author(s):  
Dwita Suastiyanti ◽  
Maykel T.E. Manawan ◽  
Marlin Wijaya
Keyword(s):  
Particle Size ◽  
Sol Gel ◽  
Sinter Time ◽  
Weight Ratio ◽  
Electric Polarization ◽  
X Ray Diffraction ◽  
Gel Method ◽  
Sol Gel Method ◽  
Particle Size Analyzer ◽  
Dominant Phase

The nanomultiferroic material which is synthesized in this research used sol-gel method. The research used weight ratio of BaTiO3: BiFeO3 of 2: 1. Gel formed after heating at 80-90°C was calcined at 350°C for 4 hours and then sintered at 700,750 and 800°C for 2, 4 and 6 hours respectively. Powder produced after sintering was characterized by X-Ray Diffraction (XRD) test using XRD Phillips PW 1835 type, 20°-100° diffraction angle and CuKα, electric polarization properties test and particle size measurement using Particle Size Analyzer of Beckman Coulter DelsaTM Nano instrument. From the characterization results, it is obtained that the dominant phase is Barium Bismuth Iron (III) Oxide (BaBiFe2O5). Electrical polarization properties such as remanent, coersivity and saturation reach maximum value at sinter temperature of 750° C and sinter time of 6 hours. This result is supported by the smallest particle size of powder (54-57 nm) and also supported by the largest number of dominant phase (98.79%) at same condition.

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