Abstract Most current research is devoted to electrochemical nitrate reduction reaction for ammonia synthesis under alkaline/neutral media while the investigation of acidic conditions rarely reported. In this work, we demonstrate potential TiO 2 nanosheet with intrinsically poor hydrogen-evolution activity selective and rapid conditions. Hybridized iron phthalocyanine, resulting catalyst displays remarkably improved efficiency toward formation owing enhanced adsorption, suppressed hydrogen...

Abstract The quest for advanced energy storage devices with cheaper, safer, more resource‐abundant has triggered intense research into zinc ion batteries (ZIBs). Among them, organic materials as cathode ZIBs have attracted great interest due to their flexible structure designability, high theoretical capacity, environmental friendliness, and sustainability. Although numerous electrode been studied different redox mechanisms proposed in the past decade, electrochemical performance still needs...

Redox-active organic materials, as a new generation of sustainable resources, are receiving increasing attention in zinc-ion batteries (ZIBs) due to their resource abundance and tunable structure. However, molecules with high potential rare, the voltage most reported cathode-based ZIBs is less than 1.2 V. Herein, we explored redox process p-type organics figured out relationship between energy change output during process. Then, proposed dual-step strategy effectively tune eventually improve...

Zn-based solid polymer electrolytes (SPEs) have enormous potential in realizing high-performance zinc-ion batteries. Polymeric single-ion conductor (PSIC)-based SPEs can largely eradicate anion migration and side reactions of electrodes with decreased polarization, but the ionic conductivity is still unsatisfactory due to tight localized ion interactions sluggish chain motion. Herein, by employing heterocyclic tetrazole as anionic center chain, a novel PSIC fabricated optimized charge...

Aqueous rechargeable batteries are prospective candidates for large-scale grid energy storage. However, traditional anode materials applied lack acid-alkali co-tolerance. Herein, we report a covalent organic framework containing pyrazine (C=N) and phenylimino (-NH-) groups (HPP-COF) as long-cycle high-rate both acidic alkaline batteries. The HPP-COF's robust linkage the hydrogen bond network between -NH- water molecules collectively improve acid-alkaline More importantly, promotes rapid...

Abstract Directly electrochemical conversion of nitrate (NO 3 − ) is an efficient and environmentally friendly technology for ammonia (NH production but challenged by highly selective electrocatalysts. High‐entropy alloys (HEAs) with unique properties are attractive materials in catalysis, particularly multi‐step reactions. Herein, we first reported the application HEA (FeCoNiAlTi) electrocatalytic NO reduction to NH (NRA). The bulk active NRA limited unsatisfied yield 0.36 mg h −1 cm −2...

Quinone-based electrodes using carbonyl redox reactions are promising candidates for aqueous energy storage due to their high theoretical specific capacity and high-rate performance. However, the proton manners influences on electrochemical performance of quinone still not clear. Herein, we reveal that could determine products enol conversion stability organic electrode. Specifically, protons preferentially coordinated with prototypical pyrene-4,5,9,10-tetraone (PTO) cathode, increasing...

Abstract The design of smart hydrogel actuators fully constructed from natural polymers for assessing the biomedical applications is important but challenging. Herein, an extremely simple, green, and ultrafast strategy presented preparing robust gradient all‐polysaccharide polyelectrolyte complex actuators. Driven by diffusing low molecular weight chitosan into high sodium alginate solution, a nanoporous, ultrastrong, chitosan/sodium film with adjustable thickness can be directly generated...

High-voltage aqueous rechargeable batteries are promising competitors for next-generation energy storage systems with safety and high specific energy, but they limited by the absence of low-cost electrolytes a wide electrochemical stability window (ESW). The decomposition is mainly facilitated hydrogen bond network between water molecules in solvation sheath. Here, three types small dipole (small containing dipole; glycerol (Gly), erythritol (Et), acrylamide (AM)) reported to develop ESW...

The utilisation of recycled concrete aggregate (RCA) in Self-Compacting Concrete (SCC) has the potential to reduce both environmental impact and financial cost associated with this increasingly popular type. However, date limited research exists exploring use coarse RCA SCC. work presented paper seeks build on existing knowledge area by examining workability, strength, fracture properties SCCs containing 0%, 25%, 50%, 75%, 100% RCA. experimental programme indicated that at levels 25% 50%...

Abstract Aqueous batteries that use metal anodes exhibit maximum anodic capacity, whereas the energy density is still unsatisfactory partially due to high redox potential of anode. Current are plagued by dilemma Zn not low enough, Al, Mg, and others with excessively cannot work properly in aqueous electrolytes. Mn a suitably promising candidate, which was rarely explored before. Here, we report rechargeable Mn‐metal battery enabled well‐designed electrolyte robust inorganic–organic...

Abstract Rechargeable lithium–iodine batteries are highly attractive energy storage systems featuring high density, superior power sustainability, and affordability owing to the promising redox chemistries of iodine. However, severe thermodynamic instability shuttling issues cathode have plagued active iodine loading, capacity retention cyclability. Here development thermally electrochemically stable I − /I 3 ‐bonded organic salts as materials for Li–I 2 is reported. The chemical bonding...

A single-electron transfer mode coupled with the shuttle behavior of organic iodine batteries results in insufficient capacity, a low redox potential, and poor cycle durability. Sluggish kinetics are well known conventional lithium-iodine (Li-I) batteries, inferior to other conversion congeners. Herein, we demonstrate new two-electron chemistry I- /I+ inter-halogen cooperation based on developed haloid cathode. The iodide-ion battery exhibits state-of-art capacity 408 mAh gI-1 fast superior...

Metal-organic framework-based materials are promising single-site catalysts for electrocatalytic nitrate (NO3- ) reduction to value-added ammonia (NH3 on account of well-defined structures and functional tunability but still lack a molecular-level understanding designing the high-efficient catalysts. Here, we proposed molecular engineering strategy enhance electrochemical NO3- -to-NH3 conversion by introducing carbonyl groups into 1,2,4,5-tetraaminobenzene (BTA) based metal-organic polymer...

Mo 4/3 B 2− x T z MBene with ordered vacancies is, for the first time, exploited as a high-performance catalyst near-neutral Zn–air batteries coin-cell configuration and delivers most stable long cycling lifespan compared to previous works.

Abstract Electrolyte environments, including cations, anions, and solvents are critical for the performance delivery of cathodes batteries. Most works focused on interactions between cations cathode materials, in contrast, there is a lack in‐depth research correlation anions cathodes. Here, we systematically investigated how manipulate coulombic efficiency (CE) zinc We take intercalation‐type V 2 O 5 conversion‐type I as typical cases profound studies. It was found that electronic properties...

Abstract Metal hexacyanoferrates are recognized as superior cathode materials for zinc and hybrid batteries, particularly the Prussian blue analog (PBA). However, PBA development is hindered by several limitations, including small capacities (<70 mAh g −1 ) short lifespans (<1000 cycles). These limitations generally arise due to incomplete activation of redox sites structure collapse during intercalation/deintercalation metal ions in PBAs. According this study, adoption a hydroxyl‐rich...

Abstract As the need for sustainable battery chemistry grows, non‐metallic ammonium ion (NH 4 + ) batteries are receiving considerable attention because of their unique properties, such as low cost, nontoxicity, and environmental sustainability. In this study, solvation interactions between NH solvents elucidated design principles weakly solvated electrolytes proposed. Given that hydrogen bond dominate solvents, strength solvent's electrostatic potential directly determines its solvating...

Abstract Polymer blends based solid polymer electrolytes (SPEs), combining the advantages of multiple polymers, are promising for utilization 5 V‐class cathodes (e.g., LiCoMnO 4 (LCMO)) with enhanced safety. However, severe macro‐phase separation defects and voids in restrict electrochemical stability ionic migration SPEs. Herein, inorganic compatibilizer polyacrylonitrile grafted MXene (MXene‐g‐PAN) is exploited to improve miscibility poly(vinylidene fluoride‐co‐hexafluoropropylene)...

With the aid of a hydroxyl group as an electron-donating group, redox potential phenazine derivatives is reduced, and rate performance increases due to hydrogen bonds between molecules.

The development of flexible lithium-ion batteries (LIBs) imposes demands on energy density and high mechanical durability simultaneously. Due to the limited deformability electrodes, as well flat smooth surface metal current collectors, stable/durable/reliable contact between electrode materials collectors remains a challenge, in particular, for electrodes with loading mass heavily deformed batteries. Binders play an essential role binding particles adhering them collectors. Herein, inspired...