Development of Statistical Model for Selection of Electrode Parameters in Manufacturing of Ultracapacitor

2020 ◽  
Vol 862 ◽  
pp. 22-27
Author(s):  
Laxman S. Godse ◽  
M.J. Bhalerao ◽  
Faiz M. Khwaja ◽  
Neelima R. Kulkarni ◽  
Parshuram B. Karandikar
Keyword(s):  
Specific Capacitance ◽  
Electrode Material ◽  
Small Volume ◽  
Electrode Materials ◽  
Research Work ◽  
Current Collector ◽  
Electrical Energy ◽  
Storage Device ◽  
Current Energy ◽  
Selection Of

Ultracapacitor is a new electrical energy storage device which has high power density than conventional battery and capacitor. It offers high capacitance in small volume compared to conventional capacitors. While selecting ultracapacitors for various applications, parameters like specific resistance, internal capacitance, pulse current, energy density are required to be considered. Amongst these factors, specific capacitance of ultracapacitor depends mainly on parameters of electrode. The present paper is focused on modeling of ultracapacitor based on variations in some of the electrode parameters. The objective of present research work is to apply a statistical method to obtain an electrode material based model for prismatic type ultracapacitor. To have deep insight about the performance through modeling approach, the number of trials have been taken by doing the variations in the electrode materials of ultracapacitor and the quantity of the electrode material loaded on the current collector. The effect of both these variations is studied over the specific capacitance, which is taken as output parameter of model. Developed model is validated at selected values of input parameters.

scholarly journals Nanostrucutured MnO2-TiN Nanotube Arrays for Advanced Supercapacitor Electrode Material

2021 ◽  
Author(s):  
Peng Ren ◽  
Chao Chen ◽  
Xiuchun Yang
Keyword(s):  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Electrode Material ◽  
Electrode Materials ◽  
Synergistic Effects ◽  
Electronic Conductivity ◽  
Retention Rates ◽  
Storage Device ◽  
Nanotube Arrays ◽  
Transfer Resistance

Abstract Supercapacitor is an emerging and essential energy storage device to supply energy for human activities. Optimizing electrode materials is necessary for the development of high-performance supercapacitors. Herein, we synthesize different nanostructured MnO2-TiN nanotube arrays electrode materials and discuss their electrochemical performance. The synergistic effects of TiN with high conductivity and MnO2 with high capacitance can extremely enhance the electrochemical performance of the electrode material. The specific capacitance of δ-MnO2 nanosheets-TiN nanotube arrays can reach to 689.88 F•g−1 with good magnification capacity and electron/ion transport properties. Its internal resistance and the charge transfer resistance are low as 1.183 Ω and 52.23 Ω, respectively, indicating the excellent electronic conductivity and electron diffusion. In terms of charging-discharging cycle stability, the specific capacitance retention rates are 97.2% and 82.4 % of initial capacitance after 100 and 500 cycles, respectively.

scholarly journals A vanadium-based oxide-phosphate-pyrophosphate framework as a 4 V electrode material for K-ion batteries

2021 ◽  
Author(s):  
Mirai Ohara ◽  
A. Shahul Hameed ◽  
Kei Kubota ◽  
Akihiro Katogi ◽  
Kuniko Chihara ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Material ◽  
Large Scale ◽  
Electrode Materials ◽  
Electrical Energy ◽  
Positive Electrode ◽  
Electrical Energy Storage ◽  
Positive Electrode Materials

K-ion batteries (KIBs) are promising for large-scale electrical energy storage owing to the abundant resources and the electrochemical specificity of potassium. Among the positive electrode materials for KIBs, vanadium-based polyanionic...

scholarly journals Formation of Hierarchical 2D-Mos2 Nanostructures over Carbon Fabric as Binder Free Electrode Material for Supercapacitor Applications

2018 ◽  
Vol 15 ◽  
pp. 5943-5949
Author(s):  
Selvaraj Shanthi ◽  
Yasuhiro Hayakawa ◽  
Suru Ponnusamy ◽  
Hiroya Ikeda ◽  
Chellamuthu Muthamizhchelvan
Keyword(s):  
Specific Capacitance ◽  
Electrode Material ◽  
Electrode Materials ◽  
Cyclic Behavior ◽  
Carbon Fabric ◽  
Low Thermal Expansion ◽  
Potential Electrode ◽  
Hydrothermal Approach ◽  
Xrd Patterns ◽  
New Generation

Carbon fabrics are the new generation promising electrode materials for super capacitors owing to their high electrical conductivity, high chemical stability and low thermal expansion. In this work, 2D-MoS2 nanostructures have been successfully deposited over the commercially available carbon fabric by hydrothermal approach, using silicontungstic acid as an additive. MoS2 nanostructures – carbon fabric was broadly characterized using XRD, FESEM and Raman Spectroscopy. XRD patterns indicated that the fabricated MoS2 nanoparticles can be indexed to hexagonal (2H) and rhombohedral (3R) phases. FESEM images revealed the formation of hierarchical 2D MoS2 nanosheets arranged in a nanosphere like morphology over the carbon fabric. The electrochemical behavior of the MoS2 - carbon fabric and commercially available bare carbon fabric were studied using cyclic voltammetry analysis with different scan rates. The MoS2-carbon fabric exhibited an excellent electrochemical performance with a specific capacitance of 441 F/g at a scan rate of 10mV/s. The good cyclic behavior with symmetric charging/discharging curves, constant specific capacitance for longer scan rates, suggesting that the MoS2- carbon fabric electrode is a potential electrode material for high power applications.

Nitrogen-Enriched Reduced Graphene Oxide for High Performance Supercapacitor Electrode

2020 ◽  
Vol 20 (8) ◽  
pp. 4854-4859 ◽  
Author(s):  
Lei Chen ◽  
Xu Chen ◽  
Yaqiong Wen ◽  
Bixia Wang ◽  
Yangchen Wu ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Specific Capacitance ◽  
Reduced Graphene Oxide ◽  
Electrode Material ◽  
High Performance ◽  
Electrode Materials ◽  
Electrochemical Impedance ◽  
Oxide Electrode ◽  
Reduced Graphene

Nitrogen-enriched reduced graphene oxide electrode material can be successfully prepared through a simple hydrothermal method. The morphology and microstructure of ready to use electrode material is measured by field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). Physical characterizations revealed that nitrogen-enriched reduced graphene oxide electrode material possessed high specific surface area of 429.6 m2 · g−1, resulting in high utilization of electrode materials with electrolyte. Electrochemical performance of nitrogen-enriched reduced graphene oxide electrode was also investigated by cyclic voltammetry (CV), galvanostatic charge/discharge measurements and electrochemical impedance spectroscopy (EIS) in aqueous in 6 M KOH with a three-electrode system, which displayed a high specific capacitance about 223.5 F · g−1 at 1 mV · s−1. More importantly, nitrogenenriched reduced graphene oxide electrode exhibited outstanding stability with 100% coulombic efficiency and with no specific capacitance loss under 2 A · g−1 after 10000 cycles. The supercapacitive behaviors indicated that nitrogen-enriched reduced graphene oxide can be a used as a promising electrode for high-performance super-capacitors.

Highly conductive Ni(OH)2 nano-sheets wrapped CuCo2S4 nano-tube electrode with a core-shell structure toward high performance supercapacitor

2021 ◽  
Author(s):  
Yinan Yuan ◽  
Henan Jia ◽  
Zhaoyuan Liu ◽  
Lidong Wang ◽  
J. Sheng ◽  
...  
Keyword(s):  
Electrode Material ◽  
Shell Structure ◽  
High Performance ◽  
Electrode Materials ◽  
Core Shell ◽  
Electrochemical Performances ◽  
Tube Electrode ◽  
Optimum Selection ◽  
Core Shell Structure ◽  
Selection Of

The design of microstructures and the optimum selection of electrode materials have substantial effects on the electrochemical performances for supercapacitors. A core-shell structured CuCo2S4@Ni(OH)2 electrode material was designed, in which...

Emerging NiCo2O4 Electrode Materials Assembled by Nanosheets for High Performance Hybrid Capacitor with High Specific Capacitance

2020 ◽  
Vol 15 (4) ◽  
pp. 498-503
Author(s):  
Jian Wang ◽  
Yan Zhao ◽  
Dong Zhang ◽  
Yucai Li ◽  
Shiwei Song ◽  
...  
Keyword(s):  
Energy Storage ◽  
Specific Capacitance ◽  
Power Density ◽  
Rational Design ◽  
Electrode Materials ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Storage Device ◽  
Energy Storage Devices

Rational design and construction of hybrid capacitor electrode materials with prominent energy and power density plays an indispensable role for its potential application in energy storage devices. In this work, the nanoflower-like NiCo2O4 samples are successfully prepared on Ni foam via a facile hydrothermal method. The as-fabricated NiCo2O4 samples exhibit superior electrochemical performance with a high specific capacitance of 444.4 F g–1 at 1 A g–1 and excellent capacitance retention. In addition, the as-fabricated device presents a high energy density of 0.298 mWh cm–3 at a power density of 5.71 mW cm–3 and excellent cycle stability with the capacitance retention of 75.6% after 10000 cycles, indicating a promising application as electrodes for energy storage device.

Scalable Electrode Materials with Nanoporous Current Collector Shells for Supercapacitors with Ultrahigh Areal and Volumetric Capacitances

2021 ◽  
Author(s):  
Ruitao Zhou ◽  
Ying Li ◽  
Kwok Ho Lam
Keyword(s):  
Specific Capacitance ◽  
Power Density ◽  
High Power ◽  
Electrode Materials ◽  
Current Collector ◽  
High Power Density ◽  
Mass Loading ◽  
Active Materials ◽  
Limited Mass

Supercapacitor is characterized by its high power density, but the bottleneck is the limited mass loading and low specific capacitance of active materials in a single electrode. Although there have...

scholarly journals Demand Side Management Techniques for Peak Reduction

2021 ◽  
Vol 9 (VII) ◽  
pp. 2911-2913
Author(s):  
D. Sai Kumar
Keyword(s):  
Research Work ◽  
Peak Load ◽  
Electrical Energy ◽  
Demand Side Management ◽  
Demand Side ◽  
Peak Reduction ◽  
Industrial Growth ◽  
Air Conditioners ◽  
Selection Of

Industrial growth is the back bone for the development of any nation. Industries are mainly dependent on electrical energy. But from the various studies, the sources for electrical energy are decreasing gradually, and in turn, the gap is increasing between the supplier and the load. The solution for this scenario is optimal utilization of resources. To overcome this problem , the concept Demand Side Management (DSM) has emerged in Power System Planning and Management. The principle objective of DSM is mutual understanding between the supplier and the consumer for maximizing benefits and minimizing inconvenience. The aim of this research work is selection and application of appropriate DSM techniques to industrial and domestic loads for peak load management and energy conservation, that is to control the maximum demand during the peak hours and saving the energy by using the energy efficient and intelligent appliances like air conditioners and water heaters. DSM includes techniques like the End Use Equipment Control, the Load Priority Technique, he Peak Clipping & Valley filling, the Differential Tariff and Resizing of the equipment. Depending upon the application, all the techniques may be applied sequentially, or only a few of them can be applied. There is a lot of ambiguity in the selection of DSM techniques, because the application of each DSM technique depends on the case study and the problem associated with the respective case study. After comprehensive understanding of a particular case, a thorough investigation and subsequent data analysis pave the way for the selection of appropriate DSM technique/techniques

Preparation and Improved Capacitive Behavior of NiO/TiO2 Nanocomposites as Electrode Material for Supercapacitor

2020 ◽  
Vol 16 (1) ◽  
pp. 79-85 ◽  
Author(s):  
Palani Anandhi ◽  
Veerabadran Jawahar Senthil Kumar ◽  
Santhanam Harikrishnan
Keyword(s):  
Energy Density ◽  
Electrochemical Performance ◽  
Specific Capacitance ◽  
Electrode Material ◽  
Electrode Materials ◽  
Sol Gel ◽  
Electronic Conductivity ◽  
Pure Tio2 ◽  
High Electronic Conductivity ◽  
Charge Discharge

Background: Of late, supercapacitors have been drawing great attention over other rechargeable energy storage devices. More efforts are made on the electrode materials of the supercapacitors, in order to improve the specific capacitance and energy density. Based on the past literature, it was stated that pure TiO2 (as electrode material) could promote faradaic reaction to a limited extent due to its low electronic conductivity. Further, this low conductivity could hinder the ion transfer process between electrolyte and electrode during intercalation and de-intercalation, resulting in poor energy density. Hence, it is essential to incorporate high electronic conductivity material into TiO2, for improving the electrochemical performance. Objective: In the present study, the preparation and electrochemical performance of NiO/TiO2 nanocomposites as an electrode material for supercapacitor were extensively studied. Methods: NiO/TiO2 nanocomposites were synthesized by sol-gel method. The as-prepared nanocomposites were characterized by high-resolution TEM, field emission SEM and XRD. The electrochemical behaviors of the electrode using nanocomposites were assessed by means of cyclic voltammetry (CV) and galvanostatic charge-discharge tests. Results: The maximum specific capacitance of the nanocomposites based electrode witnessed through CV test was 405 F g-1 at the scan rate of 5 mV s-1 in 1M Na2SO4 electrolyte. The capacitance retention after 5000 charge-discharge cycles was estimated as 92.32%. The energy and power densities at current density of 1 A g-1 were found to be 5.67 Wh kg-1 and 210.52 W kg-1, respectively. Conclusion: NiO/TiO2 nanocomposites synthesized via sol-gel technique appeared to be flake-like structure. NiO incorporated into TiO2 increased higher electronic conductivity while comparing to pure TiO2. Also, an introduction of NiO into TiO2 improved the specific capacitance, power density, energy density and cycle stability. Due to these facts, combining NiO with TiO2 could be considered to be an efficient way of enhancing the electrochemical performance of electrodes of the supercapacitor.

scholarly journals Soft and wrinkled carbon membranes derived from petals for flexible supercapacitors

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Xiuxiu Yu ◽  
Ying Wang ◽  
Li Li ◽  
Hongbian Li ◽  
Yuanyuan Shang
Keyword(s):  
Specific Capacitance ◽  
Electrode Material ◽  
Low Cost ◽  
Current Collector ◽  
High Specific Capacitance ◽  
Cost Effective ◽  
Cycling Performance ◽  
Carbon Membrane ◽  
Flower Petal ◽  
Flexible Supercapacitors

Abstract Biomass materials are promising precursors for the production of carbonaceous materials due to their abundance, low cost and renewability. Here, a freestanding wrinkled carbon membrane (WCM) electrode material for flexible supercapacitors (SCs) was obtained from flower petal. The carbon membrane was fabricated by a simple thermal pyrolysis process and further activated by heating the sample in air. As a binder and current collector-free electrode, the activated wrinkled carbon membrane (AWCM) exhibited a high specific capacitance of 332.7 F/g and excellent cycling performance with 92.3% capacitance retention over 10000 cycles. Moreover, a flexible all-solid supercapacitor with AWCM electrode was fabricated and showed a maximum specific capacitance of 154 F/g and great bending stability. The development of this flower petal based carbon membrane provides a promising cost-effective and environmental benign electrode material for flexible energy storage.

Sign in / Sign up

Export Citation Format

Share Document