Field Of Energy Storage Technologies Research Articles

Copper-Based Para-Phthalic Acid Metal-Organic Framework: An Efficient Anodic material for Super-capattery Hybrid Systems

The battery-supercapacitor hybrid, an asymmetric energy storage system, has garnered considerable attention due to its outstanding energy storage capabilities. Anodic materials have become a central focus, driven by the quest for enhanced energy density, power density, cycle life, and overall performance. In this study, we have synthesized copper-based para-phthalic acid (PTA) metal-organic frameworks (MOFs) via a facile hydrothermal method to be employed as the positive electrode material in a battery-supercapacitor hybrid matrix. The initial testing indicates the battery-type nature of the prepared electrode along with maximum specific capacity of 260.5 C g-1 at 0.7 A g-1. Subjection of Cu-PTA MOF electrode to real device configuration (Super-capattery device) results in considerable specific capacity of 152.2 C g-1 along with specific energy and power of 35.9 Wh kg-1 and 5950 W kg-1, respectively at 0.3 A g-1. The device also demonstrated a stability potential of 92.15% when tested for 5000 continuous charge-discharge cycles. The present study presents Cu-PTA MOF an exciting addition for advancing current state of research in the field of energy storage technology.

Covalent triazine frameworks (CTFs) drive innovative advances in rechargeable metal-ion batteries: a review

In the field of energy storage technology, the organic electrodes, separators, and electrolytes have unique advantages over inorganic materials, such as low cost, environmental friendliness, and a wide range of applications. Due to the advantages of organics such as light elements, abundant reserves, and recyclability, they have become favorable candidate materials for solving the energy storage problems caused by the fossil energy crisis. In recent years, as a high-performance branch of covalent organic frameworks, covalent triazine structures (CTFs) have attracted great interest due to their applications in electrochemical energy storage. CTFs have gradually become excellent organic materials for metal-ion batteries applications due to their large specific surface area, nitrogen richness, customizable structural features, and electron donor-acceptor/conductive parts. However, the relatively poor conductivity of the triazine ring in the main structure and the harsh polycondensation conditions limit its commercial application. To overcome these challenges, many effective strategies have emerged in terms of structural optimization, functional construction, and triazine-based composites. This review summarizes in detail the synthesis methods and applications of CTFs cathodes, electrolytes, and separators in the past decade. It is found that for CTFs, large-scale synthesis methods and performance regulation strategies have reached a bottleneck. It is hoped that the systematic summary of this review will provide strategic screening and prospects for the further expansion of CTFs research in next-generation batteries.

Designing high-performance hybrid supercapacitors and electrochemical sensors with carbon nanotube-embedded silver manganese sulfide@AC@NF composites

Recently, there has been a lot of interest in hybrid supercapacitors due to their amazing capacity to store energy, surpassing the energy storage capability of both conventional supercapacitors and batteries. In this work, physical integration of silver manganese sulphide (AgMnS) into carbon nanotubes was achieved using hydrothermal synthesis. A comprehensive evaluation was conducted on the material's electrical characteristics. With this composite functioning as the positive electrode and activated carbon (AC) acting as the negative, an asymmetric device configuration was used. The AgMnS@CNT composite demonstrated a notable specific capacity of 358.0C/g at a 2.0 A/g rate. The material demonstrated a remarkable 49.5 Wh/kg energy density and a remarkable 1505.0 W/kg power density. 83.3 % of the initial capacity of the composite material remained even after 5000 cycles. This illustrates its continued stability and suggests that its operating lifetime may be increased. Besides; the hybrid electrode is used to detect the glucose in the specimen up to 0 mM to 2 mM. The electrochemical device showed a remarkable value of sensitivity of 1402 μA·cm−2 mM−1. As the field of energy storage technology develops, this dynamic composite may reveal completely new and exciting options.

Fabricating ultralight and ultrathin copper current collectors for high-energy batteries

Improving cell-level gravimetric and volumetric energy density is essential to achieve high-performance batteries in the rapidly evolving field of energy storage technology, which requires consideration of all cell components. Traditional current collectors (CCs) made of metal foil, especially the copper (Cu) current collector of the anode, possess high mass and cost yet do not contribute to capacity. Reducing the weight of Cu CC with minimum thickness and desirable mechanical strength is critical in enhancing energy density but is technically challenging. Herein, we demonstrate a fast and scalable chemical coating method based on electroless plating for fabricating ultralight CC (∼1.72 ​mg ​cm−2) with a thin Cu layer (500 ​nm) on an ultrathin polyethylene (PE) polymer scaffold (5 ​μm). The ultralight and ultrathin CC possesses high metal purity, high mechanical strength, high thermal stability, and outstanding electrochemical performances in lithium-ion and lithium-metal battery systems. Our ultralight CC only exhibits ∼30% of the weight of 6 ​μm Cu foil, leading to a 5−10% improvement in cell-level gravimetric energy density without sacrificing volumetric energy density. Moreover, the simplicity and scalability of the chemical coating method make it a promising solution for the mass production of ultra-thin and lightweight current collectors.

Mixed biomass-derived multi-heteroatom doped carbon-decorated Mn3O4 for a high-performance asymmetric all solid-state supercapacitor

Recently, the development of non-conventional electrochemical energy storage technologies has attracted great attention. Herein, in accordance with green strategies for the producing renewable energy storage systems, eco-friendly electrode was successfully produced from mixed biomass precursors through carbonization and activation processes. Obtained electrode (MB-AC) as a negative and its composite (Mn3O4@MB-AC) as positive electrodes were exhibited excellent electrochemical performance with high specific capacitance of 716.49 Fg−1 at 0.75 Ag−1 and 848.21 Fg−1 at 1.0 Ag−1 respectively, in 3 M KOH electrolyte. Further, for the practical application, flexible asymmetric all-solid-state supercapacitor was made. Which offer high specific capacitance of 266.46 Fg−1 at 2 Ag−1, high energy density of 119.91 Wh kg−1 at a high-power density of 1800.08 W kg−1 within a voltage window of 1.8 V. These prominent electrochemical performances suggest that selected waste biomass materials derived carbon have considerable applications in the field of energy storage technologies.

High-performance supercapacitor electrodes: Hierarchical integration of bimetallic structures incorporating silver and copper phosphates with a 3D fernlike stellar dendritic architecture

Batteries and supercapacitors remain at the front of research within the field of energy storage technologies. Over the years, the continues evolution of battery and supercapacitor device components has demonstrated remarkable advancement, evolving from simple metal blocks to complex, porous, and engineered structures composed of metal-based active materials. Towards this goal, transition metal phosphates (TM-POs) offer significant role enhancing the properties and architecture of the resulting metal-based active materials. This study introduces a unique electrode material with a dendritic structure of silver copper phosphates, derived from AgPO3 integrated with hexagonal Cu2P2O7. The improved electrochemical performance of silver copper phosphates compared to pristine AgPO3 and Cu2P2O7 is demonstrated by its increased specific capacity, reduced resistivity, higher redox activity, and a more advantageous diffusion-dominated storage mechanism. An assembled solid-state symmetric (SSCs) device, using silver copper phosphate electrodes exhibits a capacitance of 298.5 F g−1 at 15 mA cm−2, and high energy density of 20.3 Wh kg−1 with superior power density, also retains 91.7 % of its capacitance after 7000 cycles. When assembled a solid-state asymmetric supercapacitor (SSACs), as an integrated device using activated carbon and silver copper phosphate electrodes exhibits a high energy density of 30.62 Wh kg−1 at a power density of 1334 W kg−1 with retaining its capacity retention of 87.9 % even after 10,000 cycles. The enhanced capacity performance is further evaluated through first-principle investigations, elucidating that the distinct and intact heterostructure of silver copper phosphate exhibits improved metallic characteristics. This research of innovative electrodes holding superior properties holds potential for advancing next-generation electrodes for supercapacitor devices.

A Bifunctional Electrolyte Additive Features Preferential Coordination with Iodine toward Ultralong‐Life Zinc–Iodine Batteries

AbstractAqueous zinc–iodine (Zn‐I2) battery is one of the most promising candidates for large‐scale energy storage due to its cost‐effectiveness, environmental friendliness, and recyclability. Its practical application is hindered by challenges including polyiodide “shuttle effect” in the cathode and anode corrosion. In this study, a zinc pyrrolidone carboxylate bifunctional additive is introduced to simultaneously tackle the issues of the polyiodide and Zn anode. It is revealed that the pyrrolidone carboxylate anions decrease the polyiodide concentration by preferential coordination between the pyrrolidone carboxylate anions and I2 based on the Lewis acid‐base effect, suppressing the shuttle effect and therefore improving the conversion kinetics for the iodine redox process. Meanwhile, the pyrrolidone carboxylate anions adsorbed on the Zn anode inhibit Zn corrosion and promote non‐dendritic Zn plating, contributing to impressive Coulombic efficiency and long‐term cycling stability. As a result, the Zn‐I2 full battery with the bifunctional zinc pyrrolidone carboxylate additive realizes a high specific capacity of 211 mAh g−1 (≈100% iodine utilization rate), and an ultralong cycling life of >30 000 cycles with 87% capacity retention. These findings highlight the significant potential of zinc pyrrolidone carboxylate as a transformative additive for aqueous Zn‐I2 batteries, marking a critical advancement in the field of energy storage technologies.

Optimal Energy Storage System Selection: A Decision Support Framework

This study enhances the domain of optimum energy storage system selection by offering a complete decision support framework that incorporates technical, economic, and environmental factors. The technical investigation examines energy and power density measurements, which demonstrate the exceptional volumetric energy storage capacities of lithium-ion batteries at 250 Wh/L. This highlights their appropriateness for applications that prioritize compactness. Lead-acid batteries are a cost-effective option that have a lower energy density of 80 Wh/L. This makes them particularly advantageous in situations where volume limitations are not as important. Flow batteries and supercapacitors are positioned in the middle, with flow batteries offering a well-balanced profile of energy and power density, while supercapacitors excel in applications that need fast charging and discharging. An in-depth evaluation of the startup costs and ongoing expenditures is conducted to thoroughly assess the economic feasibility of adopting an energy storage system. Although lithium-ion batteries have a higher upfront cost of $100,000, they demonstrate a well-balanced economic profile by offering a significant 66% decrease in operating expenditures compared to lead-acid batteries. Lead-acid batteries, which have an initial price tag of $60,000, demonstrate cost-effectiveness but result in higher ongoing costs. Flow batteries and supercapacitors are positioned as premium alternatives, with respective beginning prices of $150,000 and $200,000. Environmental sustainability is a fundamental factor that is assessed via life cycle analysis. Lithiumion batteries, while very efficient, give rise to problems over resource depletion and environmental damage linked to mining activities. Lead-acid batteries, due to their recyclability, provide a more ecologically sound alternative. Flow batteries, which use readily available and environmentally safe components, are very compatible with objectives aimed at promoting sustainability. Supercapacitors, which often use ecologically friendly materials, have potential in reducing negative environmental impacts. MultiCriteria Decision Analysis (MCDA) is used to integrate technical, economic, and environmental assessments. Lithium-ion batteries are considered the most favorable choice due to their exceptional technical performance and economic viability. Lead-acid batteries have a strong market position due to their cost-efficiency and ecofriendliness. Flow batteries and supercapacitors, while they have distinct benefits, are only suitable for certain applications. The stability of the framework is shown by sensitivity analysis, which identifies energy density and beginning costs as crucial factors. Engaging stakeholders helps confirm the framework’s usefulness, ensuring that it can be practically used and remains relevant in guiding well-informed choices in the ever-changing field of energy storage technologies. This study provides vital insights into the discussion on sustainable and efficient energy solutions, presenting a clear plan for decision-makers to navigate the intricacies of selecting energy storage systems.

Impact of lithium nitrate additives on the solid electrolyte interphase in lithium metal batteries

Lithium metal batteries (LMBs) represent a promising frontier in energy storage technology, offering high energy density but facing significant challenges. In this work, we address the critical challenge of lithium dendrite formation in LMBs, a key barrier to their efficiency and safety. Focusing on the potential of electrolyte additives, specifically lithium nitrate, to inhibit dendritic growth, we employ advanced multi-scale simulation techniques to explore the formation and properties of the solid electrolyte interphase (SEI) on the anode surface. Our study introduces a novel hybrid simulation methodology, HAIR (Hybrid ab initio and Reactive force field Molecular Dynamics), which combines ab initio molecular dynamics (AIMD) and reactive force field molecular dynamics (RMD). This approach allows for a more precise and reliable examination of the interaction mechanisms of nitrate additives within LMBs. Our findings demonstrate that lithium nitrate contributes to the formation of a stable and fast ionic conductor interface, effectively suppressing dendrite growth. These insights not only advance our understanding of dendrite formation and mitigation strategies in lithium metal batteries, but also highlight the efficacy of HAIR as a pioneering tool for simulating complex chemical interactions in battery materials, offering significant implications for the broader field of energy storage technology.

Flexible asymmetric supercapacitor based on Hyphaene fruit shell-derived multi-heteroatom doped carbon and NiMoO4@NiCo2O4 hybrid structure electrodes

In accordance with ecological strategies for the production of renewable energy storage systems, herein, starting from the Hyphaene fruit shell (HFS) as a new carbon precursor, multi-heteroatom (O, N, S, P, and Si) self-doped porous carbon was successfully synthesized through carbonization and chemical activation (KOH) processes. The obtained honeycomb-like carbon structure (HFSC2) as negative electrode exhibited excellent electrochemical performance with high cycling stability and high specific capacitance of 337 F g−1 in 3 M KOH electrolyte solution. Meanwhile, the NiMoO4@NiCo2O4 hybrid nanostructure as a positive electrode was prepared through a simple two-step hydrothermal method followed by the annealing process. The NiMoO4/NiCo2O4 on Ni foam exhibits a very high specific capacitance of 1582 F g−1 at a current density of 0.5 A g−1 and excellent cycling stability of 82% after 3000 cycles. Further, for the practical application, the synthesized asymmetric all-solid-state supercapacitor offered high specific capacitance of 63.38 F g−1 (360.26 mF cm−2), a high energy density of 28.5 Wh kg−1 and a high-power density of 3800 W kg−1 at 14.8 Wh kg−1 within a voltage window of 0–1.8 V. These prominent electrochemical performances suggest that Hyphaene fruit shell-derived multi-heteroatom carbon and NiMoO4@NiCo2O4 hybrid electrodes have considerable applications in the field of energy storage technologies.

Optimizing solidification process in phase change energy storage units with sinusoidal wave-shaped fins

Phase change energy storage units have attracted considerable interest in the field of energy storage technology. To overcome the challenge of low thermal conductivity associated with phase change material (PCM) employed in these units, researchers have implemented fins with various shapes. In this study, a two-dimensional numerical model of a phase change energy storage unit with newly designed sinusoidal wave-shaped fins is developed. The analysis is done using commercial software ANSYS-Fluent in the transient state. The solidification process of the PCM is evaluated with enthalpy–porosity method. The validation of the model is done against an experimental result from a published article. The study focused on increasing the surface area of sinusoidal wave-shaped fins, achieved by increasing its crests and troughs counts, and to analyse its impact on the solidification process of the PCM. The thermal performances are evaluated quantitatively by analysing the solidified portion of PCM, temperature distribution, rate of heat release, and velocity variation. The result shows that the total solidification time predicted for straight fin is 115.34 min. This duration reduces for wave-shaped fins, and it reduces even further as the crests and troughs counts of wave-shaped fins increases. The maximum reduction in total solidification time is observed as 19.93% for wave-shaped fin with 10 crests and troughs counts. It is also observed that rate of reduction in total solidification time initially decreases then marginally increases with the increase in crests or troughs counts. The effect of buoyancy on the PCM flow velocity is analysed at different locations within the phase change energy storage unit. It is observed that with the increase in crests and troughs counts the movement of PCM near the crest or trough decreases.

Advances of entropy-stabilized homologous compounds for electrochemical energy storage

Recently, high-entropy materials (HEMs) have gained increasing interest in the field of energy storage technology on account of their unique structural characteristics and possibilities for tailoring functional properties. Herein, the development of this class of materials for electrochemical energy storage have been reviewed, especially the fundamental understanding of entropy-dominated phase-stabilization effects and prospective applications are presented. Subsequently, critical comments of HEMs on the different aspects of battery and supercapacitor are summarized with the underlying principles for the observed properties. In addition, we also summarize their potential advantages and remaining challenges, which will ideally provide some general guidelines and principles for researchers to study and develop advanced HEMs. The diversity of material design contributed by the entropy-mediated concept provides the researchers numerous ideas of new candidates for practical applications and ensures further research in the emerging field of energy storage.

Facile Synthesis of Bimetal Nickel Cobalt Phosphate Nanostructures for High-Performance Hybrid Supercapacitors

Herein, bimetal nickel-cobalt phosphate (NiCoP) nanostructures coated on nickel foam (NF) were synthesized for hybrid supercapacitors by a facile one-step potentiostatic electrodeposition method. The optimization of the capacitive performance for supercapacitors was achieved by varying the deposition time from 5 to 20 min. When the electrodeposition time was 15 min, an optimal performance with the NiCoP/NF-2 was achieved. A specific capacity of 883 C·g−1 was recorded at a current density of 1 A·g−1, a best rate performance of 87% along with a highest coulombic efficiency of 100%, revealing good capacitive performance and excellent reversibility. Furthermore, NiCoP/NF-2 was assessed as a positive electrode in a hybrid supercapacitor. Using activated carbon (AC) as a negative electrode, the assembled device exhibited an energy density of 54 Wh·kg−1 at a power density of 2.7 kW·kg−1 with a large working potential window of 0–1.8 V. After charging to 3.6 V for 19 s, two hybrid supercapacitor devices connected in series could light up a red LED for 191 s, which indicates that the proposed electrodeposition synthesis process and the prepared NiCoP composites hold high potential for applications in the field of energy storage technology.

A Review on the Selected Applications of Battery-Supercapacitor Hybrid Energy Storage Systems for Microgrids

This paper presents a comprehensive categorical review of the recent advances and past research development of the hybrid storage paradigm over the last two decades. The main intent of the study is to provide an application-focused survey where every category and sub-category herein is thoroughly and independently investigated. Implementation of energy storage systems is one of the most interestingly effective options for further progression in the field of alternative energy technology. Apart from a meticulous garnering of the energy resources regulated by the energy storage, the main concern is to optimize the characteristic integrity of the storage devices to achieve a practically techno-economic size and operation. In this paper, hybrid energy storage consisting of batteries and supercapacitors is studied. The fact that the characteristic of batteries is mostly complementary to that of supercapacitors, hybridizing these storage systems enhances their scope of application in various fields. Therefore, the objective of this paper is to present an inclusive review of these applications. Specifically, the application domain includes: (1) regulation of renewable energy sources, (2) contributions to grid regulation (voltage and frequency compensation, contribution to power system inertia), (3) energy storage enhancements (life cycle improvement, and size reduction), (4) regenerative braking in electric vehicles, (5) improvement in wireless power transfer technology. Further, this review also descriptively highlights the control strategies implemented in these domains of applications. The application-oriented review explicates the principle advantages with the hybridization of battery and supercapacitor energy storage systems that can be used as an insight for further development in the field of energy storage technology and its applications.

Hierarchical mulberry-like Fe3S4/Co9S8 nanoparticles as highly reversible anode for lithium-ion batteries

Hierarchical mulberry-like iron-cobalt sulfide (Fe3S4/Co9S8) nanoparticles were conveniently fabricated through etching the FeCoAl alloy in mild conditions followed by one-step facile sulfurization process. The as-made sulfide nanoparticles are composed of interconnected tiny particles and numerous pore channels as the building subunits. Coupling with the hierarchical nanostructure and the synergistic effects between the dual sulfides, the Fe3S4/Co9S8 composite demonstrated the outstanding lithium storage performances in terms of superior reversible capacity, good rate performance, and exceptional cycling stability. The specific capacity of 945 mAh g−1 could be reserved over Fe3S4/Co9S8 composite at 100 mA g−1 after 100 cycles. More importantly, upon long-term cycles for 1500 loops under the high rate of 2000 mA g−1, the specific capacity of the as-made sulfide still retained as high as 519 mAh g−1. Fe3S4/Co9S8 composite presents prospective application potential in the field of energy storage technologies.

Special report on the achievements realized by researchers of Chinese Academy of Sciences in the field of energy storage technologies

Abstract The inevitable depletion of non-renewable fossil fuels and serious environmental pollution promote the wide application of renewable energies. Most of the renewable energy sources, such as solar and wind power, suffer from uncontrollable as well as complicated situations (Yang et al., 2011) [1] . Electrochemical energy storage technologies are crucial to solve these problems, as they can efficiently store electricity in chemicals and release it according to the users’ demands (Yang et al., 2011; He et al., 2006) [1] , [2] . Moreover, energy and environmental challenges have stimulated great interest to replace gasoline engine powered vehicles by plug-in hybrid vehicles (PHEV) and electric vehicles (EVs). Therefore, it is vital to improve the performance of energy storage systems, which depends on the development of key materials for the various batteries and new energy storage strategies. Researchers from Chinese Academy of Science (CAS) have dedicated to the researches of energy storage systems for decades and made significant process. We will introduce the progress on energy storage systems of CAS in recent two years, which covers the key materials of Lithium ion battery (LIB), Lithium-oxygen (Li-O2) battery, Lithium-sulfur (Li-S) battery, Lithium ion capacitor, Sodium ion battery, and Flow battery.

Recent progresses on nickel-rich layered oxide positive electrode materials used in lithium-ion batteries for electric vehicles

High energy density lithium-ion batteries are eagerly required to electric vehicles more competitive. In a variety of circumstances closely associated with the energy density of the battery, positive electrode material is known as a crucial one to be tackled. Among all kinds of materials for lithium-ion batteries, nickel-rich layered oxides have the merit of high specific capacity compared to LiCoO2, LiMn2O4 and LiFePO4. They have already become one of the most attractive candidates for the mainstream batteries in industries. In this work, the recent advances on three commonly concerned nickel-rich layered oxides are presented. The preparation, microstructure, electrochemical performances are focused, the modification including coating design as well as dopant selection is specially discussed in details, which is essential to enhance the durability and energy density of lithium-ion batteries. Additionally, the prospects and challenges are also systematically discussed, as well as the potential applications in the field of energy storage technologies.