Field Of Energy Conversion Research Articles

Magnetic Material Modelling of Electrical Machines

As Guest Editors of this Special Issue, it was our responsibility to ensure that the contributions to the issue related to the extensive field of electromechanical energy conversion, with a special focus on the design, materials, and modeling of electrical machines [...]

Preparation of Carbon Dots@r-GO Nanocomposite with an Enhanced Pseudo-Capacitance.

Carbon materials with pseudocapacitive performance have attracted emerging interest in the energy storage and conversion field. Reduced graphene oxide (r-GO) with superior conductivity and electrochemical stability has been extensively investigated as an efficient capacitive electrode material. In this study, three-dimensional carbon dots (CDs)@r-GO hydrogel electrode was successfully in situ prepared by the one-pot method, where the CDs play a critical role in serving as both reduction agent and electrochemical active sites. With prolonged reaction time, the oxygen content of the CDs@r-GO nanocomposite material could be effectively reduced to ensure better electric conductivity, and the nitrogen content, which provides pseudocapacitance, was gradually increased. The representative two pairs of fast and reversible current peaks appeared in cyclic voltammetry curves, with around three times higher specific capacitance of CDs@r-GO hydrogel electrode (290 F g-1 at the current density of 1 A g-1 in 1 M H2SO4 electrolyte). This simple and mild approach is promising and it is believed it will shed more light on the preparation of high-efficiency and high-performance energy storage materials based on functional reductive CDs.

Organic-inorganic hybrid quasi-2D perovskites incorporated with fluorinated additives for efficient and stable four-terminal tandem solar cells

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

Recent progress of multilayer polymer electrolytes for lithium batteries

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

Revealing energy storage mechanism of CsPbBr3 perovskite for ultra-stable symmetric supercapacitors

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

Recent commentaries on the expected performance, advantages and applications of sodium-ion batteries

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

Giant enhancement of the initial SERS activity for plasmonic nanostructures via pyroelectric PMN-PT.

Herein, a simply-prepared and highly sensitive electric field-induced surface-enhanced Raman spectroscopy (E-SERS) substrate is proposed by combining a pyroelectric material (PMN-PT) with the plasmonic silver nanoparticles (Ag NP). The intensity of SERS signals is further enhanced by more than 100 times after the application of positive or negative pyroelectric potentials. Theoretical calculations and experimental characterizations demonstrate that the chemical mechanism (CM) as induced by the charge transfer (CT) is mainly responsible for enhanced E-SERS. In addition, a novel nanocavity structure with PMN-PT/Ag/Al2O3/silver nanocubes (Ag NCs) was also introduced, which could effectively convert light energy into heat energy and realize a tremendous enhancement of SERS signals. These findings are expected to further accelerate the application of plasmonic metal nanoparticle-based pyroelectric materials in the fields of energy conversion, optical-sensors and photocatalysts.

Ionic conductivity and mechanical properties of the solid electrolyte interphase in lithium metal batteries

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

Polyurethane/Li10GeP2S12 composite electrolyte with high ions transfer number and ions capture for all-solid-state lithium batteries

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

Enhanced all-climate sodium-ion batteries performance in a low-defect and Na-enriched Prussian blue analogue cathode by nickel substitution

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

Enhancement of the triiodide reduction reaction by doping molybdenum in NiSe hierarchical microspheres: a theoretical and experimental study

A theoretical and experimental study on the catalytic activity for the IRR of Mo–NiSe was carried out to guide the design of cost-effective catalysts in the field of energy conversion.

Zn-based batteries for energy storage

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

Lithium metal stabilization for next-generation lithium-based batteries: from fundamental chemistry to advanced characterization and effective protection

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

. Insights into the design of mildly acidic aqueous electrolytes for improved stability of Zn anode performance in zinc-ion batteries

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

Rational design of Ru/TiO2/CNTs as cathode: promotion of cycling performance for aprotic lithium-oxygen battery

Energy Materials is an interdisciplinary international open access, online journal dedicated to communicating recent progresses related to materials science and engineering in the field of energy conversion and storage. The journal publishes Articles, Communications, Mini/Reviews and Perspectives with original research works focusing on the challenges of sustainable energy for the future.

Synthesis and characterization of TiO2 nano fluids formation and its optical, electrical and catalytic property analysis

Growing interest in the field of thermal energy conversion into useful electrical energy is the field of interest towards energy harvesting. Titania nanofluid prepared by low cost precursors using hydrothermal method. The physico chemical characterization of as prepared titania nanoparticle were characterized by XRD, Raman and UV-Visible spectrometric methods. The particle size measurement was determined via Zeta potential study. We have studied the miscibility and viscosity and sedimentation property of as prepared titanium dioxide nanofluid particles by low cost method in various mixed solvent medium. Nanofluids property with different concentration of TiO2 nanoparticles (0.01%, 0.02%, 0.04%, 0.05%, 0.1%, 0.2%, 0.5%) have been prepared by adding different concentrations and studied their physico-chemical properties. The as prepared TiO2 nanoparticles in the form fluid solution have shown very clear settled solution after the addition of suitable solvent medium and preparation method.

A MXene-BiFeO3-ZnO nanocomposite photocatalyst served as a high-performance supercapacitor electrode.

MXenes have attracted considerable attention in the field of energy storage and conversion due to their high surface area, excellent electrical conductivity, and ability to intercalate various ions. However, simultaneously achieving high capacitance, rate capability, cycling stability, and mechanical flexibility is a significant challenge for designing MXene-based supercapacitors. In this article, we explored MXene-BiFeO3-ZnO nanocomposites for both photocatalytic and electric double-layer supercapacitor applications. While the BiFeO3-ZnO nanohybrid heterostructure improves the charge separation properties in nanocomposite photocatalysts, it was applied as an interlayer spacer between the MXene layers to prevent the stacking effect of electrodes in the supercapacitor. Furthermore, the optimization of MXene content in the nanocomposite was established by photocatalytic studies on methylene blue dye, which revealed a maximum of 98.72% degradation under direct sunlight with superior stability. The electrochemical studies on the best composition material reveal a maximum areal capacitance (Ccv) of 142.8 mF cm-2, an energy density (E) of 1.65 μW h cm-2, and a capacitive retention of 99.98% after 8000 cycles at 7 μA cm-2. Additionally, the flexible solid-state supercapacitor fabricated with the same material demonstrates an areal capacitance of 47.6 mF cm-2 and a capacitive retention of 66% after 8000 cycles at 7 μA cm-2, with potential for high-performance flexible supercapacitors.

2D-Ti3C2Tx MXene-supported Cu2S nanoflakes for supercapacitors and electrocatalytic oxygen evolution reaction

Recently, the design of efficient multifunctional materials for supercapacitors and oxygen evolution reaction (OER) has become imperative in the field of energy storage and conversion.

Recent Advances for the Synthesis and Applications of 2-Dimensional Ternary Layered Materials.

Layered materials with unique structures and symmetries have attracted tremendous interest for constructing 2-dimensional (2D) structures. The weak interlayer interaction renders them to be readily isolated into various ultrathin nanosheets with exotic properties and diverse applications. In order to enrich the library of 2D materials, extensive progress has been made in the field of ternary layered materials. Consequently, many brand-new materials are derived, which greatly extend the members of 2D realm. In this review, we emphasize the recent progress made in synthesis and exploration of ternary layered materials. We first classify them in terms of stoichiometric ratio and summarize their difference in interlayer interaction, which is of great importance to produce corresponding 2D materials. The compositional and structural characteristics of resultant 2D ternary materials are then discussed so as to realize desired structures and properties. As a new family of 2D materials, we overview the layer-dependent properties and related applications in the fields of electronics, optoelectronics, and energy storage and conversion. The review finally provides a perspective for this rapidly developing field.

Three-dimensional graphene/metal-organic framework composites for electrochemical energy storage and conversion.

Three-dimensional graphene (3DG)/metal-organic framework (MOF)-based composites have attracted more and more attention in the field of energy due to their unique hierarchical porous structure and properties. The combination of graphene with MOFs can not only effectively overcome the limitations of poor electrical conductivity and low stability of MOFs, but also prevent the aggregation and reaccumulation between graphene sheets. Moreover, 3DG/MOF composites can also be used as multifunctional precursors with adjustable structures and composition of derivatives, thus expanding their applications in the field of electrochemistry. This feature article elaborates the latest synthesis methods of 3DG/MOF composites and their derivatives, along with their applications in batteries, supercapacitors (SCs) and electrocatalysis. In addition, the current challenges and future prospects of 3DG/MOF-based composites are discussed.