Wire-shaped micro-supercapacitor and micro-battery: Aligned multi-walled carbon nanotube fibers composite have been easily twisted to produce both wire-shaped supercapacitors lithium ion batteries with high performances. The energy densities achieved 92.84 35.74 mWh/cm3 while the power could reach 3.87 2.43 W/cm3 during charge discharge process, respectively. unique structure enables promising applications in various fields, e.g., these wires can be integrated into electronic textiles by a...

Recent research progresses on high performance anode materials for high-energy sodium-ion batteries are comprehensively summarized.

Glucose sensors have been extensively developed because of their broad applications, especially in diabetes diagnosis. Up to date, electrochemical enzymatic glucose are commonly used daily life for detection and commercially successful as glucose-meters they exhibit excellent selectivity, high reliability, could be handled under physiological pH conditions. However, considering some intrinsic disadvantages enzymes, such fabrication cost poor stability, non-enzymatic attracted increasing...

The application of high-performance silicon-based anodes, which are among the most prominent anode materials, is hampered by their poor conductivity and large volume expansion. Coupling anodes with carbonaceous materials a promising approach to address these issues. However, distribution carbon in reported hybrids normally inhomogeneous above nanoscale, leads decay coulombic efficiency during deep galvanostatic cycling. Herein, we report porous nanocomposite derived from phenylene-bridged...

Solid-state fiber-based supercapacitors have been considered promising energy storage devices for wearable electronics due to their lightweight and amenability be woven into textiles. Efforts made fabricate a high performance fiber electrode by depositing pseudocapacitive materials on the outer surface of carbonaceous fiber, example, crystalline manganese oxide/multiwalled carbon nanotubes (MnO2/MWCNTs). However, key challenge remaining is achieve specific capacitance density without...

Secondary batteries have become important for smart grid and electric vehicle applications, massive effort has been dedicated to optimizing the current generation improving their energy density. Multi‐electron chemistry paved a new path breaking of barriers that exist in traditional battery research provided ideas developing systems meet density requirements. An in‐depth understanding multi‐electron chemistries terms charge transfer mechanisms occuring during electrochemical processes is...

Abstract Hard carbon (HC) anodes have shown extraordinary promise for sodium‐ion batteries, but are limited to their poor initial coulombic efficiency (ICE) and low practical specific capacity due the large amount of defects. These defects with oxygen containing groups cause irreversible sites Na + ions. Highly graphited decreases defects, while potentially blocking diffusion paths Therefore, molecular‐level control graphitization hard open accessible channels ions is key achieve...

Abstract Given the merits of affordable cost, superior low‐temperature performance, and advanced safe properties, sodium‐ion batteries (SIBs) have exhibited great development potential in large scale energy storage applications. Among various emerging carbonaceous anode materials applied for SIBs, hard carbon (HC) has recently gained significant attention regarding their relatively low wide availability, optimal overall performance. However, insufficient initial Coulombic efficiency (ICE) HC...

Abstract Organic electroactive compounds hold great potential to act as cathode material for organic sodium‐ion batteries (OSIBs) because of their environmental friendliness, sustainability, and high theoretical capacity. Although some electrodes have been developed with good performance, practical application is still obstructed by inherent drawbacks such low conductivity solubility in electrolytes. In addition, research on OSIBs has mainly focused the performance level neglected trade‐off...

With a series of merits, Prussian blue analogs (PBAs) have been considered as superior cathode materials for sodium-ion batteries (SIBs). Their commercialization, however, still suffers from inferior stability, considerable [Fe(CN)6 ] defects and interstitial water in the framework, which are related to rapid crystal growth. Herein, "water-in-salt" nanoreactor is proposed synthesize highly crystallized PBAs with decreased water, show both specific capacity rate capability SIBs. The...

Developing hard carbon with a high initial Coulombic efficiency (ICE) and very good cycling stability is of great importance for practical sodium-ion batteries (SIBs). Defects oxygen-containing groups grown along either the edges or layers, however, are inevitable in can cause tremendous density irreversible Na+ sites, decreasing therefore causing failure battery. Thus, eliminating these unexpected defect structures significant enhancing battery performance. Herein, we develop strategy...

Hard carbon anodes with all-plateau capacities below 0.1 V are prerequisites to achieve high-energy-density sodium-ion storage, which holds promise for future sustainable energy technologies. However, challenges in removing defects and improving the insertion of sodium ions head off development hard this goal. Herein, a highly cross-linked topological graphitized using biomass corn cobs through two-step rapid thermal-annealing strategy is reported. The constructed long-range graphene...

The composition, structure, reaction mechanism of transition metal-based catalysts and their effects on the electrochemical performance Li-CO 2 cells were summarized, some perspectives for development put forward.

Abstract Sodium‐ion batteries (NIBs) have emerged as a promising alternative to commercial lithium‐ion (LIBs) due the similar properties of Li and Na elements well abundance accessibility resources. Most current research has been focused on half‐cell system (using metal counter electrode) evaluate performance cathode/anode/electrolyte. The relationship between achieved in half cells that obtained full cells, however, neglected much this research. Additionally, trade‐off electrochemical cost...

Prussian blue analogues (PBAs) have been regarded as promising cathode materials for alkali-ion batteries owing to their high theoretical energy density and low cost. However, the water vacancy content of PBAs lower bring safety issues, impeding large-scale application. Herein, a facile "potassium-ions assisted" strategy is proposed synthesize highly crystallized PBAs. By manipulating dominant crystal plane suppressing vacancies, as-prepared exhibit increased redox potential resulting in up...

Abstract Aqueous zinc‐ion batteries (ZIBs) are among the most promising next‐generation energy storage systems due to their high level of safety, environmental friendliness, and low cost. However, dendritic growth Zn deposition leads Coulombic efficiency severe capacity degradation, which limits large‐scale application. In this study, silicon nanoparticles used as electrolyte additives can regulate uniform electrodeposition by formation SiOZn bonds. Theoretical calculations experimental...

Prussian blue analogs (PBAs) have attracted wide interest as a class of ideal cathodes for rechargeable sodium-ion batteries due to their low cost, high theoretical capacity, and facile synthesis. Herein, series highly crystalline Fe-based PBAs (FeHCF) cubes, where HCF stands the hexacyanoferrate, is synthesized via one-step pyrophosphate-assisted co-precipitation method. By applying this proposed crystallization-controlled method slow down crystallization process suppress defect content...

Rechargeable sodium ion batteries (SIBs) have promising applications in large-scale energy storage systems. Iron-based Prussian blue analogs (PBAs) are considered as potential cathodes owing to their rigid open framework, low-cost, and simple synthesis. However, it is still a challenge increase the content structure of PBAs thus suppress generation defects structure. Herein, series isostructural samples synthesized evolution from cubic monoclinic after modifying conditions witnessed....

Abstract Sodium‐ion batteries (SIBs) are a promising candidate for large‐scale energy storage due to the low cost and abundant sodium resources. However, formation of dendrites on surface hard carbon (HC) anodes is most intractable challenge full cells during charging, leading severe performance degradation safety hazards. Here, robust additive‐induced borate fluoride‐rich interphase constructed by introducing difluoro(oxalato)borate (NaDFOB) as additive in ether‐based electrolyte relieve...

Abstract Sodium‐based rechargeable batteries are considered one of the strongest contenders for next generation power storage devices. Functional electrolytes with additives play a crucial role in influencing electrochemical performance sodium‐based batteries. The addition small doses can greatly enhance electrolyte, improving energy density, cycling performance, and safety. This paper presents an overview recent research focused on novel sodium‐ion (SIBs) sodium‐metal (SMBs). categorized...

Hard carbon (HC) is one of the most promising anode materials for sodium-ion batteries (SIBs) due to its cost-effectiveness and low-voltage plateau capacity. Heteroatom doping considered as an effective strategy improve sodium storage capacity HC. However, previous heteroatom strategies are performed at a relatively low temperature, which could not be utilized raise Moreover, extra heteroatoms create new defects, leading initial coulombic efficiency (ICE). Herein, we propose repair based on...