Abstract Covalent organic frameworks with designable periodic skeletons and ordered nanopores have attracted increasing attention as promising cathode materials for rechargeable batteries. However, the reported cathodes are plagued by limited capacity unsatisfying rate performance. Here we report a honeycomb-like nitrogen-rich covalent framework multiple carbonyls. The sodium storage ability of pyrazines carbonyls up-to twelve sodium-ion redox chemistry mechanism each repetitive unit been...

Organic carbonyl compounds show potential as cathode materials for lithium-ion batteries (LIBs) but the limited capacities (<600 mA h g-1 ) and high solubility in electrolyte restrict their further applications. Herein we report synthesis application of cyclohexanehexone (C6 O6 ), which exhibits an ultrahigh capacity 902 with average voltage 1.7 V at 20 LIBs (corresponding to a energy density 1533 Wh kg-1C6O6 ). A preliminary cycling test shows that C6 displays retention 82 % after 100...

Copper nanoparticles dispersed rod-shaped La2O2CO3 efficiently catalyzed transfer dehydrogenation of primary aliphatic alcohols with an aldehyde yield up to 97%. This high efficiency was achieved by creating a catalytically active nanoenvironment for effective reaction coupling between alcohol and styrene hydrogenation via hydrogen transfer. The {110} planes on the nanorods not only provided substantial amounts medium-strength basic sites activation but also directed selective dispersion...

Abstract Sodium batteries have attracted much attention in recent years because of their comprehensive electrochemical performance, high abundance, and low cost sodium resources. However, the unsatisying energy density poor cycling stability current restrict large‐scale applications. Here an situ polymerization method to construct π‐conjugated poly(pyrene‐4,5,9,10‐tetraone)/carbon nanotubes (PPTO–CNTs) composites as cathode materials for is used. It found that π–π interaction between PPTO...

Abstract Rechargeable aqueous aluminum batteries (AABs) are potential candidates for future large‐scale energy storage due to their large capacity and the high abundance of aluminum. However, AABs face challenges inferior rate capability cycling life charge density Al 3+ , which induces sluggish intercalation/extraction dynamics structure collapse inorganic cathode materials during discharge–charge cycles. Here, optimization macrocyclic calix[4]quinone (C4Q) with a cavity multi‐adjacent...

Abstract Organic carbonyl compounds show potential as cathode materials for lithium‐ion batteries (LIBs) but the limited capacities (&lt;600 mA h g −1 ) and high solubility in electrolyte restrict their further applications. Herein we report synthesis application of cyclohexanehexone (C 6 O ), which exhibits an ultrahigh capacity 902 with average voltage 1.7 V at 20 LIBs (corresponding to a energy density 1533 Wh kg ). A preliminary cycling test shows that C displays retention 82 % after 100...

Abstract Polymer‐based sodium metal battery (SMB) has a great development prospect due to its low cost, good safety, and high theoretical energy density. However, (Na) electrode suffers cyclic stability the naturally‐formed unstable solid electrolyte interface (SEI). Herein, 3D network polymer, poly‐bis(3‐(2‐methylaziridin‐1‐yl) propanoate (PBMP) is synthesized, for mechanically robust gel polymer (GPE), in which tertiary‐amine functional group with low‐valence N prefers react Na produce...

La2O3-supported copper nanoparticles are sufficiently active for transfer dehydrogenation of primary aliphatic alcohols to aldehydes. When used 1-octanol, the yield 1-octanal can be as high 63%. The catalyst is also highly effective a wide variety substrates, such aromatic, aliphatic, and cyclic alcohols. desired products approaches 100% turnover frequency 86.5 h−1. synergistic effect between basicity La2O3 hydrogen spillover Cu particle contributes significantly extremely activity Cu/La2O3

An unstable solid electrolyte interphase (SEI) layer on a metal electrode leads to issues of severe dendrite formation and side reactions, resulting in low cycle stability safety hazards metal-based batteries. Herein, functional quinoid polymer (poly(2,5-dihydroxy-1,4-benzoquinone-3,6-methylene), PDBM) is introduced the surface Na/Li metal, forming flexible uniform polymer–salt (PDBM-Na/Li)-based SEI with Na+/Li+ enriching property ion dissociation energy. The PDBM-Na enables stable Na...

Abstract Sodium metal batteries (SMBs) with the advantages of high energy density and low cost have attracted extensive attention as next‐generation rechargeable battery technology. However, SMBs suffer from severe Na dendrite undesired solid electrolyte interface (SEI) layer, which inevitably destroy cycling durability safety. Herein, a p‐π conjugated organic molecule (OHTAPQ) redox‐active carbonyls pyrazines is employed robust artificial SEI layer on anode (denoted OHTAPQ@Na) to address...

The intrinsic safety and cost-effectiveness of the aqueous zinc ion batteries hold potential for grid-scale energy storage. However, uncontrolled dendrite growth, parasitic reactions, electrochemical corrosion anode due to random Zn2+ transport near hinder its practical applications. Herein, a pre-solvated artificial protective layer (ps-APL) with nitrogen-containing functional group is constructed by an in situ polymerization strategy stabilize Zn via boosted mass kinetics oriented exposure...

Aqueous batteries (ABs) based on water-containing electrolytes are intrinsically safe and serve as promising candidates for the grid-scale energy storage power supplies of wearable electronics. The severe temperature fluctuations...

Abstract Gel‐state Na metal batteries (NMBs) are promising candidates for the large‐scale energy storage due to merits of low cost, abundant sodium resources, and high density. However, long‐term lifespan safety NMBs with large capacity limited by unstable electrode‐electrolyte interface. Herein, interfaces regulated mechanically robust GPE coupled artificial NaBr/Na x Sn y layer on anode, enabling symmetric cells a cycling over 2500 h at 0.5 mA cm −2 , along an ultralong cycle life ca. 4700...

A novel carbon quantum dots (CQDs)/Bi12O17Cl2 semiconductor composite was synthesized by a simple room-temperature precipitation method, in which the strong interaction between CQDs and Bi12O17Cl2 formed, it characterized XRD, Raman spectroscopy, TEM, XPS, UV–vis DRS, N2 adsorption/desorption electrochemical measurements. The performance of CQDs/Bi12O17Cl2 for photocatalytic oxygen evolution from water splitting studied under visible light irradiation at room temperature. results indicated...

A polycationic cyclodextrin significantly decreased the critical aggregation concentrations of anionic surfactants with different head/tail groups by a factor 14–467 through molecular induced aggregation.