scholarly journals A Review of Supercapacitors: Materials Design, Modification, and Applications

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7779
Author(s):  
Muhammad Yaseen ◽  
Muhammad Arif Khan Khattak ◽  
Muhammad Humayun ◽  
Muhammad Usman ◽  
Syed Shaheen Shah ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Materials ◽  
In Situ Polymerization ◽  
Sol Gel ◽  
Chemical Vapor ◽  
Specific Power ◽  
Drying Methods ◽  
Design Modification ◽  
Hybrid Supercapacitors ◽  
Co Precipitation

Supercapacitors (SCs) have received much interest due to their enhanced electrochemical performance, superior cycling life, excellent specific power, and fast charging–discharging rate. The energy density of SCs is comparable to batteries; however, their power density and cyclability are higher by several orders of magnitude relative to batteries, making them a flexible and compromising energy storage alternative, provided a proper design and efficient materials are used. This review emphasizes various types of SCs, such as electrochemical double-layer capacitors, hybrid supercapacitors, and pseudo-supercapacitors. Furthermore, various synthesis strategies, including sol-gel, electro-polymerization, hydrothermal, co-precipitation, chemical vapor deposition, direct coating, vacuum filtration, de-alloying, microwave auxiliary, in situ polymerization, electro-spinning, silar, carbonization, dipping, and drying methods, are discussed. Furthermore, various functionalizations of SC electrode materials are summarized. In addition to their potential applications, brief insights into the recent advances and associated problems are provided, along with conclusions. This review is a noteworthy addition because of its simplicity and conciseness with regard to SCs, which can be helpful for researchers who are not directly involved in electrochemical energy storage.

scholarly journals Controlled Nanostructuration of Cobalt Oxyhydroxide Electrode Material for Hybrid Supercapacitors

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2325
Author(s):  
Ronan Invernizzi ◽  
Liliane Guerlou-Demourgues ◽  
François Weill ◽  
Alexia Lemoine ◽  
Marie-Anne Dourges ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Energy Storage ◽  
Specific Surface ◽  
Electrode Materials ◽  
Specific Capacity ◽  
Hybrid Supercapacitors ◽  
Cobalt Oxyhydroxide ◽  
Precipitation Medium ◽  
The Impact

Nanostructuration is one of the most promising strategies to develop performant electrode materials for energy storage devices, such as hybrid supercapacitors. In this work, we studied the influence of precipitation medium and the use of a series of 1-alkyl-3-methylimidazolium bromide ionic liquids for the nanostructuration of β(III) cobalt oxyhydroxides. Then, the effect of the nanostructuration and the impact of the different ionic liquids used during synthesis were investigated in terms of energy storage performances. First, we demonstrated that forward precipitation, in a cobalt-rich medium, leads to smaller particles with higher specific surface areas (SSA) and an enhanced mesoporosity. Introduction of ionic liquids (ILs) in the precipitation medium further strongly increased the specific surface area and the mesoporosity to achieve well-nanostructured materials with a very high SSA of 265 m2/g and porosity of 0.43 cm3/g. Additionally, we showed that ILs used as surfactant and template also functionalize the nanomaterial surface, leading to a beneficial synergy between the highly ionic conductive IL and the cobalt oxyhydroxide, which lowers the resistance charge transfer and improves the specific capacity. The nature of the ionic liquid had an important influence on the final electrochemical properties and the best performances were reached with the ionic liquid containing the longest alkyl chain.

Engineering coordination polymer-derived one-dimensional porous S-doped Co3O4 nanorods with rich oxygen vacancies as high-performance electrode materials for hybrid supercapacitors

2020 ◽  
Vol 49 (30) ◽  
pp. 10421-10430 ◽  
Author(s):  
Youjing Li ◽  
Weiwei Li ◽  
Cui Yang ◽  
Kai Tao ◽  
Qingxiang Ma ◽  
...  
Keyword(s):  
Energy Storage ◽  
Coordination Polymer ◽  
High Performance ◽  
Oxygen Vacancies ◽  
Electrode Materials ◽  
One Dimensional ◽  
Hybrid Supercapacitors ◽  
Co3o4 Nanorods

1D porous S-doped Co3O4 nanorods with rich oxygen vacancies and enhanced energy storage capability were engineered by a coordination polymer-engaged strategy.

A Comprehensive Study on Rechargeable Energy Storage Technologies

2016 ◽  
Vol 13 (4) ◽  
Author(s):  
Rahul Gopalakrishnan ◽  
Shovon Goutam ◽  
Luis Miguel Oliveira ◽  
Jean-Marc Timmermans ◽  
Noshin Omar ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Materials ◽  
Lithium Ion ◽  
Specific Power ◽  
Materials Development ◽  
Future Evolution ◽  
Power Cycle ◽  
Storage Technologies ◽  
The Cost ◽  
Comprehensive Study

This paper provides an extended overview of the existing electrode materials and electrolytes for energy storage systems that can be used in environmentally friendly hybrid and electric vehicles from the literature based on lithium-ion and nonlithium technologies. The performed analysis illustrates the current and future evolution in the field of electrode materials development (2015–2040). The investigated characteristics are specific energy, specific power, cycle life, and safety. Furthermore, the proposed study describes the cost and life cycle assessment of the proposed technologies and the availability of these materials.

Mixed-metallic MOF based electrode materials for high performance hybrid supercapacitors

2017 ◽  
Vol 5 (3) ◽  
pp. 1094-1102 ◽  
Author(s):  
Yang Jiao ◽  
Jian Pei ◽  
Dahong Chen ◽  
Chunshuang Yan ◽  
Yongyuan Hu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Material ◽  
High Performance ◽  
Electrode Materials ◽  
Metal Organic Frameworks ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Hybrid Supercapacitors ◽  
Metal Organic

Metal–organic frameworks (MOFs) have obtained increasing attention as a kind of novel electrode material for energy storage devices.

Preparation and Characterization of Transparent Electrodes Based on CNT-s Doped Metal Oxides

2011 ◽  
Vol 324 ◽  
pp. 133-136
Author(s):  
Madis Paalo ◽  
Tanel Tätte ◽  
Eugene Shulga ◽  
Madis Lobjakas ◽  
Aare Floren ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Electrode Materials ◽  
Sol Gel ◽  
Physical Stability ◽  
Chemical Vapor ◽  
Transparent Electrode ◽  
Electrical And Optical Properties ◽  
Materials Used

In the present work, it is shown that carbon nanotube-doped transition metal oxides are potential candidates for use as ceramic transparent electrode materials. Used carbon nanotubes (CNT-s) are synthesized by using chemical vapor deposition (CVD) method. Electrodes in shape of fibers are obtained via inexpensive and low temperature sol-gel method. Due to extraordinary electrical and optical properties of CNT-s and good chemical and physical stability of metal oxide ceramics, resulting composites could be an interesting subject for industry.

Synthesis of ZnO/Au Nanorods for Self Cleaning Applications

2021 ◽  
Vol 21 (4) ◽  
pp. 2621-2625
Author(s):  
Thi Ha Tran ◽  
Thi Huyen Trang Nguyen ◽  
Manh Hong Nguyen ◽  
Nguyen Hai Pham ◽  
An Bang Ngac ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Sol Gel ◽  
Zno Nanorods ◽  
Chemical Vapor ◽  
Counter Electrodes ◽  
Sem Images ◽  
Uniform Size ◽  
High Efficient ◽  
Direct Band ◽  
Low Dimensional

Zinc oxide (ZnO) is a well-known semiconductor with valuable characteristics: wide direct band gap of ˜3.3 eV, large exciton binding energy of 60 meV at room temperature, high efficient photocatalyst, etc. which have been applied in many fields such as optical devices (LEDs, laser), solar cells and sensors. Besides, various low dimensional structures of ZnO in terms of nanoparticles, nanorods, nanoneedles, nanotetrapods find applications in technology and life. This material is also appealing due to the diversity of available processing methods including both chemical and physical approaches such as: hydrothermal, sol–gel, chemical vapor deposition and sputtering. In this report, ZnO nanorods are prepared by hydrothermal method assisted with galvanic-cell effect. The effect of counter electrode materials on the morphology and structure of obtained product was studied. Scanning electron microscopy (SEM) images of the product showed that counter electrodes made of aluminum offers nanorods of higher quality than other materials in terms of uniform size, high density and good preferred orientation. The as-prepared nanorods were then sputtered with gold (Au). ZnO/Au nanostructures show excellent photocatalyst activities which were demonstrated by complete photodegradation of methylene blue (Mb) under UV irradiation and high decomposition rate k of 0.011 min-1.

scholarly journals NiVCe-Layered Double Hydroxide as Multifunctional Nanomaterials for Energy and Sensor Applications

2021 ◽  
Vol 8 ◽  
Author(s):  
Josué M. Gonçalves ◽  
Irlan S. Lima ◽  
Nathália F. B. Azeredo ◽  
Diego P. Rocha ◽  
Abner de Siervo ◽  
...  
Keyword(s):  
Energy Storage ◽  
Layered Double Hydroxide ◽  
Electrode Materials ◽  
Electrochemical Sensors ◽  
Sol Gel ◽  
Energy Storage Devices ◽  
Electroactive Material ◽  
Sensor Applications ◽  
Multifunctional Nanomaterials ◽  
Double Hydroxide

Multifunctional nanomaterials have been attracting increasing attention as solutions to the existing challenges in energy systems and sensing technologies. In this regard, multifunctional NiVCe-layered double hydroxide (NiVCe-LDH) nanoparticles were synthesized by the modified sol-gel method. The analysis of this material demonstrated excellent potential for its utilization as electrode materials for hybrid supercapacitor, oxygen evolution reaction (OER), and sensor applications. The NiVCe-LDH nanoparticles delivered a specific charge of 740 C g−1 at 10 A g−1 and decent rate performance (charge retention of 68.7% at 100 A g−1), showing excellent prospects as electrode material for hybrid energy storage devices. In addition, NiVCe-LDH nanoparticles have also been successfully applied as a proof-of-concept for OER, as confirmed by their low Tafel slope of 47 mV dec−1. Finally, trimetallic NiVCe-LDH-based screen-printed electrodes were developed for the sensing of hydrogen peroxide directly in a real complex mouthwash sample, achieving a satisfactory recovery value of around 98% using a fast and simple batch injection analysis procedure. These results allow us to predict the great potential of this trimetallic hydroxide for building electrochemical sensors with good perspectives as electroactive material for OER processes and energy storage technologies.

scholarly journals A Comprehensive Review of Nanomaterials Developed Using Electrophoresis Process for High-Efficiency Energy Conversion and Storage Systems

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3122 ◽  
Author(s):  
Seok Hee Lee ◽  
Sung Pil Woo ◽  
Nitul Kakati ◽  
Dong-Joo Kim ◽  
Young Soo Yoon
Keyword(s):  
Energy Storage ◽  
Mass Production ◽  
High Efficiency ◽  
Sol Gel ◽  
Point Of View ◽  
Energy Storage And Conversion ◽  
Energy Conversion And Storage ◽  
Electrophoresis Deposition ◽  
Deposition Processes ◽  
Co Precipitation

Research carried out over the last few decades has shown that nanomaterials for energy storage and conversion require higher performance and greater stability. The nanomaterials synthesized by diverse techniques, such as sol-gel, hydrothermal, microwave, and co-precipitation methods, have brought energy storage and conversion systems to the center stage of practical application but they still cannot meet the capacity and mass production demands. Most reviews in the literature discuss in detail the issues related to nanomaterials with a range of structures synthesized using the above methods to enhance the performance. On the other hand, there have been few critical examinations of use of the electrophoresis process for the synthesis of nanomaterials for energy storage and conversion. The nanomaterials synthesized by electrophoresis processes related to colloidal interface science in the literature are compared according to the conditions to identify promising materials that are being or could be developed to satisfy the capacity and mass production demands. Therefore, a literature survey is of the use of electrophoresis deposition processes to synthesize nanomaterials for energy storage and conversion and the correlations of the electrophoresis conditions and properties of the resulting nanomaterials from a practical point of view.

scholarly journals Structural, Magnetic, Dielectric and Energy Storage Analysis of CoFe2O4@BaTiO3 and BaTiO3@CoFe2O4 Core-Shell Nano- Composites

2020 ◽  
Author(s):  
NIDHI SHEORAN ◽  
Vinod Kumar ◽  
Ashok Kumar
Keyword(s):  
Energy Storage ◽  
Spinel Ferrite ◽  
Sol Gel ◽  
Maximum Energy ◽  
Tangent Loss ◽  
Core Shell ◽  
Loop Analysis ◽  
Energy Storage Properties ◽  
Energy Storage Efficiency ◽  
Co Precipitation

Abstract Nano size spinel ferrite CoFe2O4 (CFO), ferroelectric BaTiO3 (BTO) and their core-shell nanocomposites BTO@CFO and CFO@BTO were synthesized using combination of chemical co-precipitation and sol-gel route respectively. The phase formation and crystallinity of bare CFO, BTO and their core-shell nanocomposites were verifiedviaX-ray diffraction pattern (XRD). High resolution transmission electron microscopy(HRTEM) revealed the core-shell structure of the nanocomposites.Magnetization measurements exhibitferromagnetic behaviour of all the samples except BTO in which superposition of weak ferromagnetic and diamagnetic response occurred due to its nanostructure. Magnetization versus temperature (M-T plot) measurements show anomaly near ferroelectric to paraelectric phase transition of BTO. Also,dielectric constant(ε¢) and tangent loss (tanδ) variation with respect to frequency (102 to 106 Hz) and temperature (300-700 K) were presented. ε¢-T curve of nanocomposites exhibit anomaly at the same temperature as observed in M-T plot of nanocomposites that indicate the inherent magneto-electric coupling in nanocomposites. Energy storage properties of BTO and nanocomposites have been examined via P-E loop analysis and confirmed that the sample CFO@BTO exhibit maximum energy storage efficiency.

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