The hydrophobic internal cavity and hydrophilic external surface of cyclodextrins (CDs) render promising electrochemical applications. Here, we report a comparative mechanistic study on the use CD molecules (α-, β-, γ-CD) as electrolyte additives for rechargeable Zn batteries. addition α-CD in aqueous ZnSO4 solution reduces nucleation overpotential activation energy plating suppresses H2 generation. Computational, spectroscopic, studies reveal that preferentially adsorbs parallel via...

Abstract Developing highly active nonprecious electrocatalysts with superior durability for both the hydrogen evolution reaction (HER) and oxygen (OER) is crucial to improve efficiency of overall water splitting but remains challenging. Here, a novel superhydrophilic Co 4 N‐CeO 2 hybrid nanosheet array synthesized on graphite plate (Co /GP) by an anion intercalation enhanced electrodeposition method, followed high‐temperature nitridation. Doping CeO into N can favor dissociation H O...

The electrocatalytic nitrogen reduction reaction (NRR) is an alternative eco-friendly strategy for sustainable N2 fixation with renewable energy. However, NRR suffers from sluggish kinetics owing to difficult adsorption and N≡N cleavage. Now, nanoporous palladium hydride reported as electrocatalyst electrochemical under ambient conditions, achieving a high ammonia yield rate of 20.4 μg h-1 mg-1 Faradaic efficiency 43.6 % at low overpotential 150 mV. Isotopic hydrogen labeling studies suggest...

Engineering a stable solid electrolyte interphase (SEI) is one of the critical maneuvers in improving performance lithium anode for high-energy-density rechargeable batteries. Herein, we build fluorinated lithium/sodium hybrid via facile electroless electrolyte-soaking approach to stabilize repeated plating/stripping metal. Jointed experimental and computational characterizations reveal that SEI mainly consisting NaF, LiF, LixPOyFz, organic components features mosaic polycrystalline...

Abstract Seawater electrolysis under alkaline conditions presents an attractive alternative to traditional freshwater for mass sustainable high‐purity hydrogen production. However, the lack of active and robust electrocatalysts severely impedes industrial application this technology. Herein, carbon‐doped nanoporous cobalt phosphide (C‐Co 2 P) prepared by electrochemical dealloying is reported as electrocatalyst evolution reaction (HER). The C‐Co P achieves overpotential 30 mV at a current...

Metallic zinc (Zn) is an attractive anode material to use for building aqueous battery but suffers from dendritic growth and water-induced corrosion. Herein, we report the of vanillin as a bifunctional additive in electrolyte stabilize Zn electrochemistry. Computational, spectroscopic, electrochemical studies suggest that molecules preferentially absorb parallel on surface homogenize Zn2+ plating favorably coordinate with weaken solvation interaction between H2O Zn2+, resulting compact,...

Vanadium based compounds are promising cathode materials for aqueous zinc (Zn)-ion batteries (AZIBs) due to their high specific capacity. However, the narrow interlayer spacing, low intrinsic conductivity and vanadium dissolution still restrict further application. Herein, we present an oxygen-deficient vanadate pillared by carbon nitride (C3 N4 ) as AZIBs through a facile self-engaged hydrothermal strategy. Of note, C3 nanosheets can act both nitrogen source pre-intercalation species...

Abstract Despite suffering from slow charge‐carrier mobility, photocatalysis is still an attractive and promising technology toward producing green fuels solar energy. An effective approach to design fabricate advanced architectural materials as photocatalysts enhance the performance of semiconductor‐based photocatalytic systems. Herein, metal–organic‐framework‐derived hierarchically ordered porous nitrogen carbon co‐doped ZnO (N‐C‐ZnO) structures are developed nanoreactors with decorated...

Engineering advantageous defects to construct well-defined active sites in catalysts is promising but challenging achieve efficient photocatalytic NH

An effective luminescent sensor for polychlorinated benzenes based on a new metal–organic framework was reported.

Utilization of solar energy is great interest for a sustainable society, and its conversion into electricity in compact battery challenging. Herein, zinc-air with the polymer semiconductor polytrithiophene (pTTh) as cathode reported direct photoenergy electric energy. Upon irradiation, photoelectrons are generated conduction band (CB) pTTh then injected π2p * orbitals O2 reduction to HO2- , which disproportionated OH- drives oxidation Zn ZnO at anode. The discharge voltage was significantly...

Abstract A photo‐involved Li‐O 2 battery with carbon nitride (C 3 N 4 ) is presented as a bifunctional photocatalyst to accelerate both oxygen reduction and evolution reactions. With illumination in discharge process, photoelectrons generated the conduction band (CB) of C are donated O for − , which undergoes second electron 2− gives final product Li ; reverse holes left behind valence (VB) plus an applied lower voltage than equilibrium drive oxidation. The significantly increased 3.22 V,...

Ambient nitrogen reduction reaction (NRR) is attracting extensive interest but still suffers from sluggish kinetics owing to competitive rapid hydrogen evolution and difficult activation. Herein, nanoporous NiSb alloy reported as an efficient electrocatalyst for N2 fixation, achieving a high ammonia yield rate of 56.9 µg h-1 mg-1 with Faradaic efficiency 48.0%. Density functional theory calculations reveal that in alloy, Ni favors hydrogenation while the neighboring Sb separates active sites...

Defects engineering is an efficient strategy to enhance the performance of electrode materials by modulating local electronic structure but usually requires costly and complicated processing. H...

Trapping the active sites on exterior surface of hollow supports can reduce mass transfer resistance and enhance atomic utilization. Herein, we report a facile chemical vapor deposition strategy to synthesize single-Ni atoms decorated S/N-doped football-like carbon spheres (Ni SAs@S/N-FCS). Specifically, CdS@3-aminophenol/formaldehyde is carbonized into S/N-FCS. The gas-migrated Ni species are anchored S/N-FCS simultaneously, yielding SAs@S/N-FCS. obtained catalyst exhibits outstanding...

Abstract Transition metal coordination polymers (TM‐CP) are promising inexpensive and flexible electrocatalysts for oxygen evolution reaction in water electrolysis, while their facile synthesis controllable regulation remain challenging. Here we report an anodic oxidation‐electrodeposition strategy the growth of TM‐CP (TM=Fe, Co, Ni, Cr, Mn; CP=polyaniline, polypyrrole) films on a variety substrates that act as both catalyst supports ion sources. An exemplified bimetallic NiFe‐polypyrrole...

Direct electrosynthesis of hydrogen peroxide (H

The rational design of single-atom catalysts with precise coordination environment and high separation efficiency photogenerated carriers is critical yet challenging to achieve efficient photocatalytic nitrogen reduction. Herein, we construct a defective photocatalyst featuring Fe single atoms immobilized in hollow BiOBr microtube using plasma-assisted synthesis strategy, where the Bi-based metal-organic framework used as sacrificial template. dual vacancies oxygen (VO) bromine (VBr) are...

Diatomic Zn–Fe anchored on N-doped carbon exhibits high electrocatalytic performance for ambient nitrogen reduction.

Abstract A photo‐involved Li‐O 2 battery with carbon nitride (C 3 N 4 ) is presented as a bifunctional photocatalyst to accelerate both oxygen reduction and evolution reactions. With illumination in discharge process, photoelectrons generated the conduction band (CB) of C are donated O for − , which undergoes second electron 2− gives final product Li ; reverse holes left behind valence (VB) plus an applied lower voltage than equilibrium drive oxidation. The significantly increased 3.22 V,...

Lithium bis(oxalate)borate electrolyte additive improves the performance of Li-rich layered oxide cathodes due to its preferential combination with generated active oxygen form a stable boron-enriched interfacial film.

Abstract Exploring unique single‐atom sites capable of efficiently reducing O 2 to H while being inert decomposition under light conditions is significant for photosynthesis, but it remains challenging. Herein, we report the facile design and fabrication polymeric carbon nitride (CN) decorated with single‐Zn that have tailorable local coordination environments, which enabled by utilizing different Zn salt anions. Specifically, atom from acetate (OAc) anion participates in on CN, forming...

Abstract Mn‐based oxides are broadly prospected cathode materials for aqueous Zn‐ion batteries (AZIBs) due to their rich abundance, low cost, and plentiful valence states. However, the further development of is severely restricted by dissolution active poor structural stability. Herein, hollow octahedral Pr 6 O 11 ‐Mn 2 3 (denoted as PrO‐MnO) heterostructures developed through a facile metal–organic framework‐engaged templating approach, which realizes boosted Zn ion storage performance. can...