An Fe-doped CoP nanoarray behaves as a robust 3D monolithic multifunctional catalyst for electrolytic and hydrolytic hydrogen evolution with high activity. Its two-electrode electrolyzer needs cell voltage of only 1.60 V 10 mA cm-2 water-splitting current. It also catalyzes effectively NaBH4 hydrolysis low activation energy ≈39.6 kJ mol-1 generation rate 6.06 L min-1 g-1 .

Abstract It is highly attractive but challenging to develop earth‐abundant electrocatalysts for energy‐saving electrolytic hydrogen generation. Herein, we report that Ni 2 P nanoarrays grown in situ on nickel foam (Ni P/NF) behave as a durable high‐performance non‐noble‐metal electrocatalyst hydrazine oxidation reaction (HzOR) alkaline media. The replacement of the sluggish anodic oxygen evolution with such more thermodynamically favorable HzOR enables electrochemical production use P/NF...

Replacement of precious Pt with earth-abundant electrocatalysts for the hydrogen evolution reaction (HER) holds great promise clean energy devices, but development low-cost and durable HER catalysts Pt-like activity is still a huge challenge. In this communication, we report on self-standing ternary FexCo1–xP nanowire array carbon cloth (FexCo1–xP/CC) as Pt-free catalyst activities being strongly related to Fe substitution ratio. Electrochemical tests show that Fe0.5Co0.5P/CC not only...

Asymmetric, regio- and stereoselective alternating copolymerization of CO(2) racemic aliphatic epoxides proceeds effectively under mild temperature pressure by using a binary catalyst system chiral tetradentate Schiff base cobalt complex [SalenCo(III)X] as the electrophile in conjunction with an ionic organic ammonium salt or sterically hindered strong nucleophile. The substituent groups on aromatic rings, diamine backbone, axial X group electrophile, well nucleophilicity, leaving ability,...

The topotactic conversion of cobalt phosphide nanoarray on Ti mesh into a phosphate (Co-Pi NA) via oxidative polarization in phosphate-buffered water is presented. As 3D oxygen evolution reaction (OER) catalyst electrode at neutral pH, the resulting Co-Pi NA/Ti shows exceptionally high catalytic activity and demands an overpotential only 450 mV to drive geometrical current density 10 mA cm-2 . Notably, this also superior long-term electrochemical stability. excellent can be attributed that...

An electrochemical nitrate-based cell enables both ammonia production and energy supply.

The mechanism of the copolymerization CO2 and epoxides to afford corresponding polycarbonates catalyzed by a highly active thermally stable cobalt(III) complex with 1,5,7-triabicyclo[4,4,0] dec-5-ene (designated as TBD, sterically hindered organic base) anchored on ligand framework has been studied means electrospray ionization mass spectrometry (ESI-MS) Fourier transform infrared spectroscopy (FTIR). single-site, cobalt-based catalyst exhibited excellent activity selectivity for polymer...

The scalable production of hydrogen fuel through electrochemical water reduction needs efficient Earth-abundant electrocatalysts to make the whole water-splitting process more energy efficient. In this Article, we report that an Al-doped CoP nanoarray on carbon cloth (Al-CoP/CC) behaves as a durable evolution electrocatalyst with superhigh activity in 0.5 M H2SO4. It demands pretty low overpotential 23 mV drive geometrical catalytic current density 10 mA cm−2, outperforming all reported...

Abstract Developing low cost and efficient anode cathode materials toward electrocatalysis are regarded as one of the most desirable yet challenging research directions, which intimately related to pressing energy, environmental human health issues. Currently, 3 D foam (such Ni foam, Cu graphene foam) based heterogeneous catalysts have been intensively explored for actively catalyzing electrode reactions. Their inherent characteristics stereo‐network structure, high specific area large pore...

Abstract The electrocatalytic nitrate reduction reaction (NO 3 ‐RR) to ammonia (NH ) offers a promising alternative approach for NH production and nitrate‐based voltaic cells which can deliver both electricity as products, are also highly attractive. However, nitrate‐to‐NH conversion involves proton‐assisted multiple‐electron transfer process with considerable kinetic barrier, underlying the need efficient catalysts NO – RR. A Zn‐nitrate battery is reported enable “killing three birds one...

Abstract Solid polymer electrolytes (SPEs) and hydrogel were developed as for zinc ion batteries (ZIBs). Hydrogels can retain water molecules provide high ionic conductivities; however, they contain many free molecules, inevitably causing side reactions on the anode. SPEs enhance stability of anodes, but typically possess low conductivities result in impedance. Here, we develop a lean electrolyte, aiming to balance transfer, anode stability, electrochemical window resistance. This is...

NH3 serves as an attractive hydrogen storage medium and a renewable energy sector for sustainable future. Electrochemical reduction is feasible ambient reaction to convert N2 NH3, while it needs efficient electrocatalysts the (NRR) meet challenge associated with activation. In this Letter, we report on our recent experimental finding that TiO2 nanosheets array Ti plate (TiO2/Ti) effective electrochemical conversion at conditions. When tested in 0.1 M Na2SO4, such TiO2/Ti attains high yield...

In 1.0 M KOH, CoP–CeO₂ nanosheets film on Ti mesh (CoP–CeO₂/Ti) attains 10 mA cm⁻² at overpotential of 43 mV due to its lower water dissociation free energy and more optimal hydrogen adsorption than CoP.

Hierarchical CoP nanosheet@microwire array on nickel foam (CoP NS@MW/NF) was developed as water oxidation electrocatalyst, with overpotential of 296 mV to drive 100 mA cm⁻² in 1.0 M KOH.

The development of efficient earth-abundant electrocatalysts for N2 reduction to ammonia (NH3) under ambient conditions is critical achieving a low-carbon and sustainable-energy society. Herein, we report the VN nanosheet array on Ti mesh as an active selective electrocatalyst reaction (NRR) in acid at room temperature atmospheric pressure 0.1 M HCl. A rate NH3 formation 8.40 × 10–11 mol s–1 cm–2 obtained −0.50 V with Faradaic efficiency 2.25%. Notably, such catalyst material also exhibits...

Aqueous zinc metal batteries are appealing candidates for grid energy storage. However, the inadequate electrochemical reversibility of negative electrode inhibits battery performance at large-scale cell level. Here, we develop practical ampere-hour-scale aqueous Zn pouch cells by engineering electrolyte solution. After identifying proton reduction as primary source H2 evolution during electrodeposition, design an solution containing reverse micelle structures where sulfolane molecules...

A Zn-NO 2 − battery with C/Co 3 O 4 catalyst cathode is developed as an energy-output electrocatalytic system that can simultaneously convert NO to NH high faradaic efficiency and supply electricity a power density of 6.03 mW cm −2 .

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...

Ultrahigh oxygen doping content in carbon quantum dots enables excellent H 2 O selectivity and great potential on-site green production.

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...

Hydrogels are widely used as quasi-solid-state electrolytes in aqueous batteries. However, they not applicable high-voltage batteries because the hydrogen evolution reaction cannot be effectively suppressed even when water is incorporated into polymer network. Herein, by profoundly investigating states of molecules hydrogels, we designed supramolecular hydrogel featuring much more nonfreezable bound and less free than that found conventional hydrogels. Specifically, two strategies developed...

Abstract The participation of high‐energy hot electrons generated from the non‐radiative decay localized surface plasmons is an important mechanism for promoting catalytic processes. Herein, another vital associated with plasmon resonance (LSPR) effect, significantly contributing to nitrogen reduction reaction (NRR), found. That say, LSPR‐induced strong electric fields can weaken intermolecular hydrogen bonds and regulate arrangement water molecules at solid–liquid interface. AuCu pentacle...

This communication describes a convenient route to optically active propylene carbonate by catalytic kinetic resolution process resulting from the coupling reaction of CO2 and racemic epoxides using simple chiral SalenCo(III)/quaternary ammonium halide catalyst systems.