A layered structure Ni-based MOF was firstly used as the electrode material for a supercapacitor and exhibited large specific capacitance of 1127 F g⁻¹at 0.5 g⁻¹.

Layered structure Zn-doped Ni-MOF was first used as the electrode material for a supercapacitor and exhibited large specific capacitance of 1620 F g⁻¹at 0.25 A g⁻¹.

Abstract Hard carbons (HCs) are the most promising candidate anode materials for emerging Na‐ion batteries (NIBs). HCs composed of misaligned graphene sheets with plentiful nanopores and defects, imparting a complex correlation between its structure sodium‐storage behavior. The currently debated mechanism Na + ‐ion insertion in hinders development high‐performance NIBs. In this article, ingenious reliable strategies used to elaborate electrochemical performance further illuminate HCs. First,...

Abstract Lithium–sulfur batteries are regarded as one of the most promising candidates for next‐generation rechargeable batteries. However, practical application lithium–sulfur (Li–S) is seriously impeded by notorious shuttling soluble polysulfide intermediates, inducing a low utilization active materials, severe self‐discharge, and thus poor cycling life, which particularly in high‐sulfur‐loading cathodes. Herein, polysulfide‐immobilizing polymer reported to address issues. A natural Gum...

Metal-organic framework cathodes usually exhibit low capacity and poor electrochemical performance for Li-ion storage owing to intrinsic conductivity inferior redox activity. Now a redox-active 2D copper-benzoquinoid (Cu-THQ) MOF has been synthesized by simple solvothermal method. The abundant porosity character endow the Cu-THQ with promising Superior is achieved as battery cathode high reversible (387 mA h g-1 ), large specific energy density (775 Wh kg-1 good cycling stability. reaction...

The fabrication of ultrathin films that are electrically conductive and mechanically strong for electromagnetic interference (EMI) shielding applications is challenging. Herein, ultrathin, strong, highly flexible Ti3C2Tx MXene/bacterial cellulose (BC) composite fabricated by a scalable in situ biosynthesis method. MXene nanosheets uniformly dispersed the three-dimensional BC network to form entangled structure endows MXene/BC with excellent mechanical properties (tensile strength 297.5 MPa...

Bismuth has emerged as a promising anode material for sodium-ion batteries (SIBs), owing to its high capacity and suitable operating potential. However, large volume changes during alloying/dealloying processes lead poor cycling performance. Herein, bismuth nanoparticle@carbon (Bi@C) composite is prepared via facile annealing method using commercial coordination compound precursor of citrate. The uniform structure with Bi nanoparticles embedded within carbon framework. nanosized ensures fast...

Abstract To tackle the issue of poor rate capability graphite anodes for potassium‐ion batteries (KIBs), nitrogen‐doped carbon nanotubes (NCNTs) with an edge‐open layer‐alignment structure were synthesized using a simple and scalable approach pyrolyzing cobalt‐containing metal–organic frameworks. The unique enables facile fast intercalation K ions. As KIBs, NCNTs demonstrated improved by high capacity retention 102 mA h g −1 at current density 2000 good stability without evident loss over...

Antimony (Sb)-based anode materials have recently aroused great attention in potassium-ion batteries (KIBs), because of their high theoretical capacities and suitable potassium inserting potentials. Nevertheless, large volumetric expansion severe pulverization during potassiation/depotassiation, the performance Sb-based is poor KIBs. Herein, a composite nanosheet with bismuth-antimony alloy nanoparticles embedded porous carbon matrix (BiSb@C) fabricated by facile freeze-drying pyrolysis...

Abstract Red phosphorus (P) has been recognized as a promising storage material for Li and Na. However, it not reported K the reaction mechanism remains unknown. Herein, novel nanocomposite anode is designed synthesized by anchoring red P nanoparticles on 3D carbon nanosheet framework K‐ion batteries (KIBs). The P@CN composite demonstrates superior electrochemical performance with high reversible capacity of 655 mA h g −1 at 100 good rate capability remaining 323.7 2000 , which outperform...

Large-scale energy storage technologies are in high demand for effective utilization of intermittent electricity generations and efficient electric power transmission. The feasibility lithium-ion batteries large-scale is under debate due to the scarcity uneven distribution lithium resources Earth's crust. Therefore, there arises tremendous interest pursuing alternative systems based on earth-abundant materials. Recently, non-aqueous potassium-ion (KIBs) emerging as a promising system...

Exceptional rate performance of porous carbon nanofiber anodes in potassium-ion batteries was demonstrated, showing that are a promising system for low-cost and large scale energy storage applications.

Conjugated microporous polymers (CMPs) with π-conjugated skeletons show great potential as energy storage materials due to their porous structure and tunable redox nature. However, CMPs the structure-performance relationships have not been well explored for potassium-ion batteries (KIBs). Here, we report structure-engineered CMP anodes electronic structures high-performance KIBs. The results demonstrate that of plays an important role in enhancing potassium capability, including lowest...

Aqueous Zn-ion batteries (AZIBs) have been recognized as promising energy storage devices due to their high theoretical density and cost-effectiveness. However, side reactions Zn dendrite generation during cycling limit practical application. Herein, ammonium acetate (CH

Hydrogen evolution, corrosion, and dendrite formation in the Zn anodes limit their practical applications aqueous metal batteries. Herein, we propose an interfacial chemistry regulation strategy that uses hybrid electrolytes of water a polar aprotic N,N-dimethylformamide to modify Zn2+-solvation structure situ form robust Zn2+-conducting Zn5(CO3)2(OH)6 solid electrolyte interphase (SEI) on surface achieve stable dendrite-free plating/stripping over wide temperature range. As confirmed by...

Sulfur defective V₅S₈/CNFs is synthesized by an electrospinning method, followed sulfuration treatment. The obtained composite exhibits attractive capacities and ultra-stable cycling performances when using as anode materials for sodium-ion potassium-ion batteries.

Herein, we report a charge-transfer complex electrolyte additive, 7,7,8,8-tetracyanoquinodimethane (TCNQ), with high Zn affinity, which was tightly adsorbed on the surface of anode to form dense and robust interfacial layer suppress activity H2O. As verified by comprehensive experimental computational analyses, this could construct Zn–Zn(TCNQ)2 Ohmic contact interface, guide rapid ion/electron transport, ameliorate electric field distribution, inhibit direct between active H2O anode,...

Abstract Developing electrodes with long lifespan and wide‐temperature adaptability is crucial important to achieve high‐performance sodium/potassium‐ion batteries (SIBs/PIBs). Herein, the SnSe 2 ‐SePAN composite was fabricated for extraordinarily stable range SIBs/PIBs through a coupling strategy between controllable electrospinning selenylation, in which nanoparticles were uniformly encapsulated SePAN matrix. The unique structure of not only relieves drastic volume variation but also...

The violent side reactions of Zn metal in aqueous electrolyte lead to sharp local-pH fluctuations at the interface, which accelerate anode breakdown; thus, development an optimization strategy accommodate a wide pH range is particularly critical for improving batteries. Herein, we report pH-adaptive electric double layer (EDL) tuned by glycine (Gly) additive with pH-dependent ionization, exhibits excellent capability stabilize anodes wide-pH electrolytes. It discovered that Gly-ionic EDL...

Abstract Although layered double hydroxides (LDHs) are extensively investigated for oxygen electrocatalysis, their development is hampered by limited active sites and sluggish reaction kinetics. Here, sulfur mismatch substitution of NiFe–LDH (S–LDH) demonstrated, which in‐situ deposited on nitrogen‐doped graphene (S–LDH/NG). This atomic‐level incorporation leads to the construction tailored topological microstructure modulated electronic structure improved catalytic activity durability...

Abstract Flexible zinc‐ion batteries have garnered significant attention in the realm of wearable technology. However, instability hydrogel electrolytes a wide‐temperature range and uncontrollable side reactions Zn electrode become main problems for practical applications. Herein, N,N‐dimethylformamide (DMF) to design binary solvent (H 2 O‐DMF) is introduced combined it with polyacrylamide (PAM) ZnSO 4 synthesize electrolyte (denoted as PZD). The synergistic effect DMF PAM not only guides 2+...