The safety and performance of lithium-ion batteries (LIBs) in electric vehicles (EVs) operating at high C-rates depend on effective and reliable thermal management. The temperature-dependent electrochemical reactions in LIBs lead to uneven heat generation in high-energy-density cells, making it challenging to design and optimize the operating parameters of a battery thermal management system (BTMS). This...

Sodium metal anode is heralded as a cornerstone for next-generation sodium battery technologies due to their low cost, high theoretical capacity, and elemental abundance. However, their practical deployment is hindered by the spontaneous formation of unstable heterogeneous solid electrolyte interphase (SEI), which induces uneven Na⁺ deposition and uncontrolled dendrite growth. In this work, we report...

The pursuit of energy storage devices with high power and energy density has driven significant advancements in supercapacitor electrode materials. This study develops a ternary NiFe2O4/rGO/PPy composite derived from Prussian blue analogs to enhance both the energy density and electrochemical stability of supercapacitors. The incorporation of reduced graphene oxide (rGO) and polypropylene (PPy) significantly improves...

Aluminum (Al)-ion batteries have gained popularity because of their improved energy density, increased safety, eco-friendliness, abundant Al resources, and extremely attractive three-electron redox, making Al-ion batteries an appealing candidate. However, the progress in Al-ion batteries has been hindered by the unavailability of potential cathode materials that could reversibly host Al3+ ions. In this work, we...

Electrochemical CO2 reduction (eCO2RR) is an effective strategy for converting CO2 into value-added products to reduce the global carbon footprint. It offers distinct advantages over other ways of CO2 reduction from a commercial perspective due to its wide range and higher selectivity of products, as well as its ease of integration with growing renewable energy...

The growing demand for sustainable energy storage solutions has stimulated extensive research efforts on sodium metal batteries (SMBs), as a promising alternative storage device to lithium‐based systems. SMBs provide advantages over high theoretical capacity and cost‐effectiveness, as well as widely available sodium resources, which effectively address the critical limitations associated with the scarcity and high...

In this study, we demonstrate the use of dual heteroatom-doped (i.e., N- and S-doped) porous carbon derived from the filters in cigarette butts, which are categorized as solid environmental waste. We use a facile, sustainable, and inexpensive method and green chemical activation for application in LIBs and SIBs. The carbon prepared by activating melamine is...

Rational design of noble metal free bifunctional electrocatalyst for water electrolysis is key for industrial scale green H2 production to meet the escalating energy needs. The electrodeposited NiCuSP shows small Tafel slopes of 79 mV dec−1 and 74 mV dec−1 for HER and OER respectively indicating rapid water splitting kinetics via weakened e− – e− repulsion at...

Lithium-ion batteries (LIB) with higher energy density are crucial for extending the driving range of electric vehicles (EVs). However, LIBs also generate significant heat during cycling, reducing their lifespan and increasing the risk of thermal runaway. Therefore, understanding the sources of heat generation is crucial to mitigate the thermal runaway issues and increase the lifetime....

Silicon has garnered increased attention as a potential next-generation anode for lithium-ion batteries due to its abundant availability and remarkable theoretical specific capacity. This study utilizes a life cycle assessment approach to analyze the cradle-to-gate environmental implications of a 1 kWh lithium nickel manganese cobalt oxide battery featuring a carbon-coated silicon-graphite composite anode with varying...

Aqueous zinc-ion batteries (ZIBs) are an attractive storage solution for renewable energy storage system (ESS) applications. Despite the intrinsic safety, eco-friendliness, and low cost of aqueous ZIBs, their practical application is severely hindered by the unavailability of high-capacity and robust cathode materials. Vanadium-based cathodes with various structures, large layer spacing, and different oxidation states are...

Lithium‐ion batteries (LiBs) are the leading choice for powering electric vehicles due to their advantageous characteristics, including low self‐discharge rates and high energy and power density. However, the degradation in the performance and sustainability of lithium‐ion battery packs over the long term in electric vehicles is affected due to the elevated temperatures induced by charge...

Developing a high energy density supercapacitor is of great challenge due to the low surface area of commercial activated carbon. The present work aims at developing highly porous nitrogen-doped porous carbon from biomass for supercapacitors. Herein, Mesua ferrea (Nahor) shells, a widely available biomass in northeast India, was used to prepare porous carbon. The effect...

Sodium metal (Na) is a promising anode material for Na metal batteries and solid-state sodium batteries, because of its high theoretical capacity, favorable electrochemical potential, and cost effectiveness. Nevertheless, practical applications of sodium metal anode are hindered by uncontrolled dendrite growth owing to chemical instability of the heterogeneous solid electrolyte interphase layer. In this work,...

This paper compares the conventional Electrochemical Impedance Spectroscopy (EIS) and the Chirp-based EIS methodologies in nonlinear Lithium-ion battery impedance spectrum simulation. Utilizing a Doyle-Fuller-Newman (DFN) model with specific parameters for LGM50 21700 Li-Ion Battery, the study emphasizes not only the accuracy but also the operational speed of the two techniques. It was observed that the...

Sodium metal (Na) anodes are considered the most promising anode for high‐energy‐density sodium batteries because of their high capacity and low electrochemical potential. However, Na metal anode undergoes uncontrolled Na dendrite growth, and unstable solid electrolyte interphase layer (SEI) formation during cycling, leading to poor coulombic efficiency, and shorter lifespan. Herein, a series of Na‐ion...

The increasing demand for energy storage devices has initiated research on alternative sustainable energy storage mechanisms, such as supercapacitors. Here, we report a skillful design strategy that harvests visible light energy and has immense potential applications in boosting the storage capacity of supercapacitors – one of the energy storage devices. A down-conversion phosphor layer is...

Lithium–sulfur (Li-S) batteries are attractive candidates for electric vehicles and grid storage applications due to their high energy density than Li-ion batteries. Development of high energy Li-S batteries employing eco-friendly, and bio-waste derived materials will further increase the sustainability of the energy storage devices. Herein, we utilize porous carbon derived from waste watermelon rind for...

Disordered rocksalt (DRX) can achieve far better capacity than layered oxide cathodes, with the potential to use as cathodes for next-generation batteries, but are limited by their poor ion diffusion kinetics. Initial assessments on Li-rich disordered cathode suggest that Li percolation is heavily influenced by transition metal (TM) polyhedral surrounding Li diffusion path by a...

Among the various sodium cathodes, the potential of Na-rich layered oxides is yet to be fully utilized. Unlike their Li counterparts, they are least explored and are at least a generation behind in development. Addressing the same, herein, Na-rich NaxMn2-xO1.5F0.5 (x = 1.05–1.3) type cathodes were synthesized successfully and analyzed as potential electrodes for Na-ion battery applications....

Recent developments in Li-ion batteries, Na-ion batteries, and supercapacitors are redefining their applications in several portable and large-scale energy storage applications. However, the demand for energy storage devices with the combination of high energy density and high power density is rapidly increasing and research on hybrid-ion capacitors, which combines the benefits of battery and capacitors...

Composite solid electrolytes (CSEs) based on poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/LiTFSI/LLZO/different wt% of tetra-ethylene-glycol-dimethyl-ether (TEGDME) were prepared using the facile solution casting method or phase-inversion method. X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy measurements were used to identify the structures and complexations of the prepared electrolyte films. The morphology and thermal stability of the...

Sodium ion batteries (SIBs) are the promising candidate for large scale applications due to their high abundance and low cost.The symmetrical SIBs (similar cathode and anode configuration) are highly promising as they exhibit negligible volume changes during the charge/discharge process and making SIBs highly stable. Several NASICON (sodium superionic conductor) have high potential towards symmetrical...

Na-rich transition metal oxides are promising cathode materials owing to their high theoretical capacity and ability to be used in a solid-state sodium battery. However, one of their drawbacks is that they are prone to capacity loss. The reduction in capacity during cycling is attributed to oxygen loss, resulting in rapid capacity fading. To address...

With the advent of electric vehicles (EVs) in the modern era to attain a sustainable environment, carbon neutrality, and energy-efficient solutions, demand for Li-ion batteries increased drastically. Lithium-ion batteries are preferred over other batteries for application in electric vehicles owing to their high energy density and long cycle life. However, the safety concerns due to...

Sodium‐ion batteries (SIBs) hold great potential for use in large‐scale grid storage applications owing to their low energy cost compared to lithium analogs. The symmetrical SIBs employing Na3V2(PO4)3 (NVP) as both the cathode and anode are considered very promising due to negligible volume changes and longer cycle life. However, the structural changes associated with the...

The development of high-energy Li ion batteries (LIBs) with a long cycle life is essential for meeting the energy requirements in next-generation large-scale applications. Monoclinic Li3V2(PO4)3 has emerged as a promising cathode for high-energy LIBs owing to its robust three-dimensional structure, high working voltage (>4.0 V), and high theoretical capacity (197 mA h g−1) compared...

Washing Ni-rich layered materials with water is a simple and effective way to reduce gas evolution by eliminating the gas generation factors. However, the water-washing process itself degrades the electrochemical performances; hence additional treatments such as heating and coating are undertaken. Thus, most studies for the post-process mainly focus on the relationship between additional treatments...

The demand for energy storage is exponentially increasing with growth of the human population, which is highly energy intensive. Batteries, supercapacitors, and hybrid capacitors are key energy storage technologies, and lithium and sodium ions are critical influencers in redefining the performances of such devices. Batteries can store energy with high density, and capacitors can deliver...

In Sodium-ion capacitors (SICs), employing high-capacity anodes based on alloying/conversion reactions can potentially alleviate the performance issues but are susceptible to rapid capacity fading due to consistent dissolution of the electrode surface by the electrolyte. Herein, we extend the “hybrid mixed electrolyte” strategy to ion capacitors for overcoming the rapid cycle decay issues in high-energy...

Lithium-ion hybrid capacitors (LICs) take the advantage of simultaneous high energy – power output, and become increasingly important for next generation applications. Developing a high performing LICs with high energy-power-cycle combination remains a significant challenge due to low capacity intercalation electrodes, and kinetically sluggish alloying type electrodes. A strategy employing fast pseudocapacitive lithium ion storage...

As the importance of additional capacity beyond the theoretical limitation of lithium-ion batteries has been recognized, extensive research into effectively utilizing the extra lithium accommodation is being conducted. One of the most effective strategies to increase capacity is the use of catalytic materials well-known to promote electrochemical reactivity. Herein, we adopt platinum (Pt) metal as...

Sodium-ion batteries have gained an intense attention as a promising alternate for Li-ion batteries due to their low cost, and abundant availability. To meet high energy density requirements, developing a high voltage cathode with ultra-long cycle life is of great importance. Na3V2(PO4)2F3 (NVPF) features a high working voltage, fast sodium-ion diffusion channels, and small volume...

Functional materials with high energy density – high rate capabilities have continued to gain importance, and are extensively studied for next-generation energy storage applications.[1] The ongoing challenge is to elevate the power density of batteries on par with capacitors, while holding the energy density and cycle life.[2] The sluggish intercalation kinetics, and continuous transition metal...

Manganese oxide (MnO2) is a promising material for supercapacitor applications, with a theoretical ultra-high energy density of 308 Wh/kg. However, such ultra-high energy density has not been achieved experimentally in MnO2-based supercapacitors because of several practical issues, such as low electrical conductivity of MnO2, incomplete utilization of MnO2, and dissolution of MnO2. The present study...

Sodium‐ion batteries (SIBs) have become increasingly important as next‐generation energy storage systems for application in large‐scale energy storage. It is very crucial to develop an eco‐friendly and green SIB technique with superior performance for sustainable future use. Replacing the conventional inorganic electrode materials with green and safe organic electrodes will be a promising approach. However,...

Lithium–sulfur batteries are attractive candidates for next generation high energy applications, but more research works are needed to overcome their current challenges, namely: (a) the poor electronic conductivity of sulfur, and (b) the dissolution and migration of long-chain polysulfides. Inspired by eco-friendly and bio-derived materials, we synthesized highly porous carbon from cinnamon sticks. The bio-carbon...

Developing high-energy lithium-ion batteries with long-term stability is critical for realizing sustainable energy applications; however, it remains highly challenging. Exploring multi-redox based electrode materials can help to achieve high capacity and high energy density in LIBs. Polyanion based monoclinic Li3V2(PO4)3 (LVP) cathodes have emerged as an interesting candidate for LIBs owing to their robust 3D...

The authors regret ‘This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Science, ICT & Future Planning)(No. 2016R1A4A1012224)’to be revised as ‘This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Science, ICT &...

We report the synthesis and fabrication of all carbonaceous electrode based high-energy and high-power- sodium-ion capacitors (NICs) which are anticipated to bridge the gap between rechargeable batteries and double layer capacitors. Unfortunately, the kinetic imbalance between battery type electrode and capacitive cathodes severely restricts the energy–power capabilities of NICs. To circumvent the kinetic mismatch and...

The Cover Feature shows a sodium-metal battery assembled with thermoplastic polyurethane elastomer-based gel polymer electrolyte and the secondary interactions occurring in the gel polymer electrolyte. The high elasticity of the gel polymer electrolyte arises from the hydrogen bonds between urethane and carbonyl groups, and the additional interactions between Na+ ions and polymer chains increase salt...

Sodium batteries have been recognized as a promising alternative to lithium‐ion batteries. However, the liquid electrolyte used in these batteries has inherent safety problems. Polymer electrolytes have been considered as safer and more reliable electrolyte systems for rechargeable batteries. Herein, a thermoplastic polyurethane elastomer‐based gel polymer electrolyte with high ionic conductivity and high elasticity was...

Non-aqueous electrical double-layer capacitors (EDLCs) with high energy density and long cycle life are the key to meet future energy demands. The performance of such high-energy supercapacitors greatly depends on the textural properties of the porous carbon electrode. Ordered mesoporous carbon materials are always the prominent electrodes for capacitor applications and the roles of pore...

A comparative study on the ionic conductivity of carbonate‐ and ether‐based electrolytes was performed, which showed that the ionic conductivity was strongly affected by the dielectric constant of the organic solvent. The relationship between the physicochemical properties of a liquid electrolyte and the cycling performance of sodium‐ion hybrid capacitors (SICs) was assessed by comparing the...

The Cover Feature shows a sodium-ion hybrid capacitor (SIC) assembled with a negative activated carbon electrode and a positive Na 3 V 2 (PO 4) 3 electrode. The SIC employing an electrolyte consisting of 1.0 m NaClO 4 in ethylene carbonate/propylene carbonate (shown on the right side) exhibits a better cycling performance than the 1,...

Present state-of-the-art graphene-based electrodes for supercapacitors remain far from commercial requirements in terms of high energy density. The realization of high energy supercapacitor electrodes remains challenging, because graphene-based electrode materials are synthesized by the chemical modification of graphene. The modified graphene electrodes have lower electrical conductivity than ideal graphene, and limited electrochemically active surface areas...

The sodium‐ion capacitor (NIC) represents an important research approach to bridge the gap between batteries and capacitors, but is still limited by inferior energy behavior at high power, low volumetric performance, low electrode mass loading, and safety issues with conventional liquid electrolyte. Herein, a high‐performing, kinetically superior, and safer quasi‐solid‐state NIC utilizing the fast sodium...

With limited amounts of fossil fuels and increasing demand for efficient energy management, lithium-ion batteries (LIBs) have been a leading power source for hybrid electric vehicles and large-scale energy storage systems. However, rising price of lithium sources has become a significant concern, caused by increasing market demand for lithium and limited amounts of lithium resources....

Electrochemical energy storage (EES) devices with simultaneous high energy and high power output are critical in next-generation smart applications. Sodium hybrid capacitors (NHCs) are relatively new devices integrating the functions of batteries and capacitors. Research on capacitor-type carbon electrodes in NHCs is necessary to improve the energy-power behavior. Herein, we study ordered mesoporous carbon (OMC)...

Development of supercapacitors with high energy density and long cycle life using sustainable materials for next-generation applications is of paramount importance. The ongoing challenge is to elevate the energy density of supercapacitors on par with batteries, while upholding the power and cyclability. In addition, attaining such superior performance with green and sustainable bio-mass derived compounds...

Electrochemical ultracapacitors exhibiting high energy output and an ultra-long cycle life, utilizing green and sustainable materials, are of paramount importance for next-generation applications. Developing an ultracapacitor that has high output energy under high power conditions in a high-voltage non-aqueous electrolyte and maintaining a long cycle life is an ongoing challenge. Herein, we utilize watermelon seeds,...

Developing sodium based energy storage systems that retain high energy density at high power along with stable cycling is of paramount importance to meet the energy demands of next generation applications. This requires the development of electrodes beyond the conventional intercalation-based chemistry to overcome the sluggish diffusion-limited reaction kinetics and limited cycle life. Herein, we...

Sodium hybrid capacitors (NHCs) have tremendous potential to meet the simultaneous high energy–high power requirement of next-generation storage applications. But NHCs still face some obstacles due to poor sodium ion kinetics, low power, and poor cyclability while working with several inorganic sodium ion hosts. Additionally, developing high-performance NHCs that are sustainable and versatile is more...

The abundance of sodium resources has recently motivated the investigation of sodium ion batteries (SIBs) as an alternative to commercial lithium ion batteries. However, the low power and low capacity of conventional sodium anodes hinder their practical realization. Although most research has concentrated on the development of high-capacity sodium anodes, anodes with a combination of...

Despite their high specific capacity, sodium layered oxides suffer from severe capacity fading when cycled at higher voltages. This key issue must be addressed in order to develop high-performance cathodes for sodium ion batteries (SIBs). Herein, we present a comprehensive study on the influence of Al doping of Mn sites on the structural and electrochemical...

The development of hybrid capacitors (HCs) has become essential for meeting the rising demand for devices that simultaneously deliver high energy with high power. Although the challenge to develop high-performance HCs remains great, it is also simultaneously essential to develop an eco-friendly and cleaner energy storage system for sustainable future use. To date, hybrid capacitors...

Sodium ion batteries have been recently proved to be a cost-effective and promising alternative to lithium-ion batteries for next generation high-energy applications. However, the sluggish intercalation kinetics in batteries greatly forbid the efficient high power operation.[1] Recently, sodium hybrid capacitors (NHCs) emerged as a promising energy storage system to retain high specific energy at high...

The low volumetric energy density of reduced graphene oxide (rGO)-based electrodes limits its application in commercial electrochemical energy storage devices that require high-performance energy storage capacities in small volumes. The volumetric energy density of rGO-based electrode materials is very low due to their low packing density. A supercapacitor with enhanced packing density and high volumetric...

Electrochemical supercapacitors with high energy density are promising devices due to their simple construction and long‐term cycling performance. The development of a supercapacitor based on electrical double‐layer charge storage with high energy density that can preserve its cyclability at higher power presents an ongoing challenge. Herein, we provide insights to achieve a high energy density...

We report a novel P2-type Na₀.₅Ni₀.₂₆Cu₀.₀₇Mn₀.₆₇O₂ (NCM) mixed oxide obtained by conventional solid-state method as a prospective cathode for sodium-ion battery (SIB) applications. X-ray diffraction analysis shows that NCM exhibits a hexagonal structure with a P6₃/mmc (No. 194) space group, in which Na-ions are located in a prismatic environment. The introduction of Cu into the...

Correction for ‘Cu-doped P2-Na₀.₅Ni₀.₃₃Mn₀.₆₇O₂ encapsulated with MgO as a novel high voltage cathode with enhanced Na-storage properties’ by Hari Vignesh Ramasamy et al., J. Mater. Chem. A, 2017, DOI: 10.1039/c6ta10334k.

We report a novel P2-type Na0.5Ni0.26Cu0.07Mn0.67O2 (NCM) mixed oxide obtained by conventional solid-state method as a prospective cathode for sodium-ion battery (SIB) applications. X-ray diffraction analysis shows that NCM exhibits a hexagonal structure with a P63/mmc (No. 194) space group, in which Na-ions are located in a prismatic environment. The introduction of Cu into the...

Since 1990 lithium-ion (Li-ion) batteries have been commercially available and currently remain as the technology of choice for applications where high energy densities are required. Sodium-ion (Na-ion) technology is similar in many ways to Li-ion technology, but is still in its initial stage. Current research trends are mostly based on Na-ion based technology due to...

Sodium ion batteries are emerging candidate for next generation high energy application including electrical vehicles and grid storage.[1] Rather than the similar working principle, the wide availability and low cost of sodium made them a suitable and an interesting candidate for large  energy applications. The research for sodium ion batteries is majorly on improving their...

A novel sodium hybrid capacitor (NHC) is constructed with an intercalation‐type sodium material [carbon coated‐Na3V2(PO4)3, C‐NVP] and high surface area‐activated carbon derived from an eco‐friendly resource cinnamon sticks (CDCs) in an organic electrolyte. This novel NHC possesses a combination of high energy and high power density, along with remarkable electrochemical stability. In addition, the C‐NVP/CDC...

In article number 1502199, Yun-Sung Lee and co-workers present a novel bio-inspired sodium ion hybrid capacitor, constructed with superionic conductor Na 3 V 2 (PO 4) 3 and a cinnamon-derived highly porous, eco-friendly, activated carbon in an organic electrolyte. This novel system delivered a superior energy density of 118 Wh kg− 1 and a power...

Development of cathode materials for lithium battery application like electric vehicle (EV) and plug-in hybrid electric vehicle (PHEV) requires high capacity materials[1]. At the same time, cost, environmental concerns and safety issues cannot be excluded. Recently, lithium transition-metal silicates such as Li2MSiO4 (M=Fe, Mn and Co) have been extensively studied as cathode materials for lithium...