Aqueous rechargeable zinc-metal-based batteries are an attractive alternative to lithium-ion for grid-scale energy-storage systems because of their high specific capacity, low cost, eco-friendliness, and nonflammability. However, uncontrollable zinc dendrite growth limits the cycle life by piercing separator, resulting in utilization both alkaline mild/neutral electrolytes. Herein, a polyacrylonitrile coating layer on anode produced simple drop approach address issue is reported. The not...

Due to the energy crisis within recent decades, renewable energies such as solar, wind and tide have received a lot of attention. However, these are dependent on time season. Consequently, storage systems needed fully utilize including their connection with smart grids. Aqueous rechargeable lithium batteries (ARLBs) may be an ideal system due its excellent safety reliability. since introduction ARLBs in 1994, progress improving performance has been very limited. Recently, rate performance,...

Aqueous rechargeable zinc-manganese dioxide batteries show great promise for large-scale energy storage due to their use of environmentally friendly, abundant, and Zn metal anodes MnO2 cathodes. In the literature various intercalation conversion reaction mechanisms in have been reported, but it is not clear how these can be simultaneously manipulated improve charge transport properties. A systematical study understand a layered δ-MnO2 cathode reported. An electrolyte-dependent mechanism...

A composite membrane of a nonwoven fabric with poly(vinylidene fluoride) exhibiting high safety (self-extinguishing), good mechanical property and low cost is reported. The ionic conductivity the as-prepared gel saturated 1 mol l−1 LiPF6 electrolyte at ambient temperature can be up to 0.30 mS cm−1, higher than that corresponding well-used commercial separator (Celgard 2730), 0.21 cm−1. Moreover, lithium ion transference in room almost twice separator. Furthermore, absorbed solvent difficult...

LiMn2O4 nanotube with a preferred orientation of (400) planes is prepared by using multiwall carbon nanotubes as sacrificial template. Because the nanostructure and orientation, it shows superfast second-level charge capability cathode for aqueous rechargeable lithium battery. At charging rate 600C (6 s), 53.9% capacity could be obtained. Its reversible can 110 mAh/g, also presents excellent cycling behavior due to porous tube structure buffer strain stress from Jahn–Teller effects.

Abstract Recently, the discovery of organometallic halide perovskites provides promising routes for fabricating optoelectronic devices with low cost and high performance. Previous experimental studies MAPbI 3 devices, such as photodetectors solar cells, are normally based on polycrystalline films. In this work, a high-performance planar-type photodetector fabricated (100) facet single crystal is proposed. We demonstrate that can perform much better than polycrystalline-film counterpart. The...

The rechargeable Li–CO 2 battery is a novel and promising energy storage system with the capability of CO capture due to reversible reaction between lithium ions carbon dioxide. Carbon materials as cathode, however, limit both cycling performance efficiency battery, insulating Li 3 formed in discharge process, which difficult decompose charge process. Here, Mo C/carbon nanotube composite material developed cathode for can achieve high (77%) improved (40 cycles). A related mechanism proposed...

Abstract Aqueous zinc‐ion batteries (ZIBs) are considered as the promising candidate of flexible energy storage devices due to their high safety, eco‐friendliness, and low‐cost. However, conventional aqueous ZIBs undergo severe capacity loss at bending subzero temperature states. Herein, an anti‐freezing hydrogel electrolyte based on zinc tetrafluoroborate (Zn(BF 4 ) 2 polyacrylamide (PAM) is developed. Owing strong electronegativity F atoms, BF − anions interact with water molecules by...

A FA co-solvent electrolyte avoids hydrogen evolution and corrosion, achieving uniform deposition of the zinc anode stable operation at low temperatures.

Abstract Lithium metal is regarded as the most promising electrode material for next generation of energy storage devices. However, low coulombic efficiency and short cycle lifespan caused by unstable interface have hindered its practical application. Constructing artificial coatings on anode one effective approaches remedying this, but effects are still limited due to their poor regulation Li + ions transport complex construction engineering. Herein, an “inverse concentration gradient”...

This study proposes a novel electrochemical method for recycling LFP based on Zn//S-LFP double-electrode system, providing green and low-cost technology future industrial applications.

The market demand for energy pushes researchers to pay a lot of attention Li-S batteries. However, the 'shuttle effect', corrosion lithium anodes, and formation dendrites make poor cycling performances (especially under high current densities sulfur loading) batteries, which limit their commercial applications. Here, separator is prepared modified with Super P LTO (abbreviation SPLTOPD) through simple coating method. can improve transport ability Li+ cations, reduce charge transfer...

Abstract Aqueous Zn‐based batteries (AZBs) have appealed numerous attentions in the energy storage field due to their low cost, environmental friendliness and high safety. However, Zn metal anode faces severe challenges of short cycle life because dendrite growth side reactions, which hinders practical application AZBs. Herein, an artificial coating layer cyclized polyacrylonitrile (cPAN) is designed on through spin‐coating thermal treatment. The cPAN possesses abundant N‐containing groups...

In recent years, there has been a growing interest in the study of particle swarm optimization (PSO) dynamic environments. This paper presents new PSO model, called with composite particles (PSO-CP), to address problems. PSO-CP partitions into set based on their similarity using "worst first" principle. Inspired by phenomenon physics, elementary members each interact via velocity-anisotropic reflection scheme integrate valuable information for effectively and rapidly finding promising optima...

Carbon coated MoO2 nanobelts were successfully synthesized via a hydrothermal method followed by calcination under inert atmosphere, using α-MoO3 as the precursor and self-template, ethanol reducer glucose carbon source. Under protection of polysaccharide resulting from polycondensation, 1-D morphology can be well retained during reduction carbonization processes. Tested anode materials for lithium ion batteries, exhibit reversible capacity 769.3 mA h g−1 at current density 100 in first...

High-temperature heat treatment (500 °C) is an effective measure for decomposing the organic binder polyvinylidene fluoride (PVDF) in cathode electrode of spent lithium-ion batteries (LIBs). However, resulting volatilization hydrogen not only causes equipment corrosion but also creates a potential environmental hazard. This study proposes use calcium oxide (CaO) as reaction medium to eliminate impact thermal decomposition PVDF LIBs. The results show that with CaO medium, can be thermally...

Great advances in rechargeable Mg batteries have been achieved. Through further exploration, their commercial application the large-scale energy storage market will be realized soon.

Lithium-ion capacitors (LICs) can deliver high energy density, large power density and excellent stability since they possess a high-capacity battery-type electrode rate capacitor-type electrode.

Lithium ion batteries (LIBs) are going to play more important roles in electric vehicles and smart grids. The safety of the current LIBs large capacity has been remaining a challenge due existence amounts organic liquid electrolytes. Gel polymer electrolytes (GPEs) have tried replace electrolyte improve their safety. However, application GPEs is handicapped by poor mechanical strength high cost. Here, we report an economic gel-type composite membrane with good based on glass fiber mats,...

An improved dual-polarized multifunctional active frequency selective surface (MAFSS) with parallel-feed configuration is proposed in this paper. The designed structure composed of two metallic layers separated by a thin dielectric layer. Three independent and controllable functions electromagnetic switching, polarization selection, tuning are integrated together into the via introducing PIN diodes varactor diodes. To reduce negative effects extra feed lines, (FSS) elements themselves play...

A self‐assembled 3D foam‐like NiCo 2 O 4 catalyst has been synthesized via a simple and environmental friendly approach, wherein starch acts as the template to form unique architecture. Interestingly, when employed cathode for lithium oxygen batteries, it demonstrates superior bifunctional electrocatalytic activities toward both reduction reaction evolution reaction, with relatively high round‐trip efficiency of 70% discharge capacity 10 137 mAh g −1 at current density 200 mA , which is much...