Fig 4 - uploaded by Adekanmi Adeyinka
Content may be subject to copyright.
Source publication
Renewable energy can effectively cope with resource depletion and reduce environmental pollution, but its intermittent nature impedes large-scale development. Therefore, developing advanced technologies for energy storage and conversion is critical. Dielectric ceramic capacitors are promising energy storage technologies due to their high-power dens...
Context in source publication
Context 1
... most popular and effective means of energy storage for electric vehicles, grid applications, and portable electrical devices right now is battery technology. A lithium-ion battery (LIB) design usually comprises key elements like the anode, cathode, separator, electrolyte, and current collectors ( Zhang et al. 2012), as shown in Fig. 4. During charging, lithium ions are released from the cathode and migrate through the separator toward the anode in an electrolyte medium while electrons pass through the external circuit to get to the anode. At the electrode/electrolyte interface, the lithium-ion and electron recombine and are stored within the layers of the anode ...
Citations
... Due to these, BaTiO 3 nanostructures suitable for many applications such as multilayer ceramic capacitors, nanogenerators, microwave absorbers, thermo optical applications, energy/data storage devices, transducers, resonators, actuators, nonvolatile random-access memory devices, biosensors, hydrophobic coatings, etc Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. [12][13][14][15][16][17][18][19][20][21][22]. However, only a few reports have been reported on glucose sensing and hydrophobic nature of BaTiO 3 nanostructures. ...
BaTiO3 nanostructures have been considered as a promising candidates in recent past for energy and biomedical sectors owing to their excellent physiochemical properties, such as high dielectric constant, excellent piezoelectric property, good biocompatibility, non-linear optical characteristics etc. Present study reveals on free-standing arrays of BaTiO3 nanostructures, were fabricated by hydrothermal conversion of anodic TiO2 nanotubes. Morphological and structural information of the BaTiO3 nanotubes were done using FESEM and XRD studies. FESEM analysis revealed that the fabricated samples were having tubular morphology of average length and pore diameter of 4.63 μm and 290 nm respectively. Cubical perovskite crystalline phase of BaTiO3 was confirmed through XRD analysis. The BaTiO3 nanotube samples had shown a higher sensitivity of 44.43 μA mM⁻¹ cm⁻² and a faster response of 0.1 s for glucose detection. The fabricated BaTiO3 nanotubes film also showed a higher contact angle of 122.70°. Therefore, our present fabrication on Titanium foil study emphasizes on arrays of BaTiO3 nanotubes which will open up a new window in the development of various types of sensing and hydrophobic coating applications.
... Relaxor ferroelectrics having slimmer hysteresis loop and high energy storage density therefore can withstand high electric field. They are appropriate for energy storage devices, with large P m and W R , small P r , and low W loss [52][53][54]. In linear dielectrics, since there is no domain alignment, it does not show any hysteresis phenomenon. ...
In this study, we investigated dense BaTi1−xNbxO3 ceramics prepared by the conventional solid-state reaction technique which shows energy storage properties and anomalous photovoltaic effect. Structural analysis of BaTi1−xNbxO3 compositions has been performed by fitting the XRD patterns with Rietveld method and all samples show coexisting tetragonal (P4 mm) and cubic (Pm-3 m) structures. Composition (x = 0.04) shows minimum band gap (2.4 eV), smaller than pure BaTiO3 ceramics which can be attributed to lattice distortion and oxygen vacancies. The improved breakdown strength and energy storage density is achieved for BaTi0.93Nb0.07O3 composition. This ferroelectric ceramic shows energy storage of 278.7 mJ/cm² and high energy conversion efficiency (90.4%). The composition (x = 0.07) exhibit a very high photovoltage (26 V) under visible light wavelength. These findings provide a fresh approach to create high-performance functional ferroelectric materials for energy applications.
... O ver the years, lithium-ion batteries (LiBs) have gained attention as reliable electrochemical energy storage devices due to their high power and energy density, low self-discharge, and long cycling life [1,2]. They have become ubiquitous today, powering everything from mobile devices to electric vehicles and grid storage systems. ...
div class="section abstract"> Despite the widespread adoption of lithium-ion batteries in various applications such as energy storage, concerns related to thermal management have been persisting, primarily due to the heat generated during their operation and the associated adverse effects on its efficiency, safety, and lifetime. Hence, the thermal characterization of lithium-ion batteries is essential for optimizing the layout of the battery cells for a pack design and the corresponding thermal management system. This study focuses on an experimental investigation of heat generation of Li-ion batteries under different operating conditions, including charge-discharge rates, ambient temperatures, states of charge, and compressive pressure. The experiments were conducted using a custom-designed multifunctional calorimeter, enabling precise measurement of the heat generation rate of the battery and the entropy coefficient. The measured results have shown a good match with the calculated heat generation rate. Additionally, heat maps that show the influence of the operating conditions on the cell’s thermal performance are proposed. By offering a detailed and intuitive visualization of how different parameters impact heat generation and dissipation, these maps serve as a vital tool for battery pack engineers to optimize the design of thermal management systems.
</div
... Research and development of new energy storage technologies, such as electrochemical capacitors [1], batteries [2,3], solid fuel cells [4], and dielectric capacitors [5,6], have steadily emerged as the key to environmentally-friendly and high-quality development in light of the rising energy and environmental concerns around the world [7,8]. Physical energy storage, represented by dielectric capacitors, has many significant advantages over chemical energy storage, including high power density, simple structure, all solid state, and high dependability [9][10][11]. The ceramic capacitors, one of the most promising dielectrics, present good temperature stability and fatigue performance (> 10 5 cycles) [12,13]. ...
Low-voltage driven ceramic capacitor applications call for relaxor ferroelectric ceramics with superior dielectric energy storage capabilities. Here, the (Bi0.5Na0.5)0.65(Ba0.3Sr0.7)0.35(Ti0.98Ce0.02)O3 + x wt% Ba0.4Sr0.6TiO3 (BNBSTC + xBST, x = 0, 2, 4, 6, 8, 10) ceramics were prepared to systematically investigate the effect of BST content on the phase structure, microscopic morphology and dielectric energy storage properties. A single perovskite structure with a dense and homogenous microstructure is presented in all BNBSTC + xBST ceramics. A recoverable energy storage density Wrec = 1.39 J/cm³ with efficiency η = 81.5% is achieved only under a low electric field of 94 kV/cm in the optimal composition of x = 6, accompanied by an enhanced dielectric temperature stability meeting the requirement of wider working window. In addition to good frequency, anti-fatigue and temperature stability, the BNBSTC + 6BST ceramics exhibit tremendous potential for designing low-voltage driven energy storage ceramic capacitors.
... Piezoelectric materials are truly captivating substances that exhibit a unique property to generate an electric charge in response to the applied mechanical stress and, conversely, deform when subjected to an electric field. This remarkable ability has led to their widespread usage in various technological applications such as sensors, actuators, resonators, frequency generators, transducers, ultrasonic generators, and energy harvesting devices [1][2][3][4]. Currently, these devices mainly rely on ceramics that contain over 60% of toxic lead. ...
... Hence, the current studies were based on increasing the capacity of the dielectric capacitors by improving the dielectric energy materials. Dielectric storage materials used in capacitors vary, including polymeric, ceramic, and glass materials (15)(16). Dielectric polymers were characterized by high electrical breakdown strength, flexibility, and suitable chemical stability; however, the low dielectric constant and poor resistance to high temperatures are the main obstacles that need improvement (17)(18). ...
... These multiferroicity materials can exhibit both ferroelectric and magnetic properties, enabling new functionalities and applications, such as magneto electric coupling. BaTiO 3 has been investigated as a potential material for energy storage applications, such as capacitors and dielectric materials [6]. Researchers have explored ways to increase the dielectric constant, breakdown strength, and energy storage density of BaTiO 3 -based materials to improve their performance in energy storage devices. ...
This unique study examined the theoretical pure BaTiO 3 and doped Ra (Ba 1-x Ra x TiO 3) impact on electronic, mechanical and optical responses were using Heydscuseria-Ernzerhof screened hybrid functional (HSE06) and generalized gradient approximation (GGA-PBE) with norm-converging pseudopotential approaches in the density functional theory. Computed the lattice constant and bond lengths for pure (BaTiO 3) and doped atoms as well as explored the changes of consequences of electronic, mechanical and optical responses. The calculated values indicate the BaTiO 3 is an indirect characteristic and an optically inactive nature. The low energy state and also conduction band of the crystal structure to transform to the direction of low energy and narrows the electronic band gap. The bandgap of pure BaTiO 3 is continually reduced which shifts the Fermi energy level E g. When increasing the doping impurities (x) of (Ra) in BaTiO 3 , the band gap shifts from indirect (X-G) to direct (X-X) nature and become optically active. The elastic and mechanical responses are essential for suitable (Ra) doped material ensuring structural integrity and predicting a ductile behavior. Kleinman coefficient (ξ), it is clear that (Ra)-doped materials shows slightly large resistance to bond bending and bond angle distortion as compare to pure BaTiO 3. Optical characteristics of the both pure and doped (Ra) materials in the core level spectra are thoroughly investigated. Optical coefficients are obtained in the energy scale start from 0 to 20 eV. Moreover, the results of optical properties show excellent influence of doping so that this material can be employed as UV filter in the UV region and in optoelectronics devices.
The rising global energy demand necessitates innovative solutions for harnessing renewable energy sources. Solar ponds have received attention as they present a viable means to address this challenge by absorbing and storing solar radiation. This article provides a comprehensive review of solar pond technology, including its principles, applications, heat extraction mechanisms, and approaches to optimize performance, with special attention to the salt-gradient solar pond. Additionally, the article identifies challenges that currently hinder the large-scale adoption of solar pond technology and offers recommendations for future research. By providing a detailed analysis of the current trends and future research directions, this paper seeks to contribute to the ongoing efforts to improve these systems, exploring various approaches to increase their efficiency and make them more economical and environmentally sustainable.
Extensive research and advancements have been progressed by the vast potential of eco-friendly dielectric capacitors in high-level electronic elements and high-performance pulsed power systems thus far. Ferroelectric ceramic materials exhibiting relaxor properties and significant dielectric constants are prime candidates for attaining exceptional energy storage capabilities. Herein, a lead-free (1-x) Ba0.9Ca0.1TiO3–xBaZr0.15Ti0.85O3 (abbreviated as (1-x) BCT-xBZT) solid solution system has been synthesized via the conventional solid-state reaction technique, with varying levels of BZT doping. The X-ray diffraction study confirmed pure perovskite structure formation in the prepared ceramics, and the coexistence of orthorhombic (O) (space group- Amm2) and tetragonal (T) (space group-P4mm) phases has been detected through the Rietveld refinement technique at room temperature. Rietveld refinement data and associated analysis highlight the gradual shift of crystal symmetry from Amm2 to P4mm as the x content increases. Replacing BZT in Ca-modified BaTiO3 has led to significant enhancements in microstructural properties and an increase in the width of the optical band gap. This, in turn, enhances energy storage capabilities compared to pure BCT. Incorporating BZT into BCT has led to the evolution of relaxor ceramics, a crucial development for achieving elevated levels of recoverable energy storage density. In this study, the solid solution comprising 0.6BCT-0.4BZT exhibits distinct traits, including a diffuse phase transition, high breakdown strength, shallow dielectric loss (tanδ <0.007), and significantly high dielectric constant. Due to enhanced electrical characteristics, the 0.6BCT-0.4BZT possesses very high saturation polarization of ∼48 μCcm−2, a total energy density of 1.71 J/cm3, and a recoverable energy density of 1.1 J/cm3. In addition, the optimized ceramics demonstrate concurrent achievement of high-frequency stability (10–250 Hz), fatigue resistance (up to 104 cycles), and favorable temperature stability (20–160°C). This study showcased a potential material candidate suitable for energy storage devices functioning within low to medium-electric fields.
