Stability and deactivation of OER electrocatalysts: A review

Journal of Energy Chemistry, Год журнала: 2022, Номер 69, С. 301 - 329

Опубликована: Янв. 29, 2022

Язык: Английский

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Bimetallic metal–organic frameworks and MOF-derived composites: Recent progress on electro- and photoelectrocatalytic applications

Coordination Chemistry Reviews, Год журнала: 2021, Номер 451, С. 214264 - 214264

Опубликована: Окт. 25, 2021

Язык: Английский

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Interfacial engineering of the NiSe2/FeSe2 p-p heterojunction for promoting oxygen evolution reaction and electrocatalytic urea oxidation

Applied Catalysis B Environment and Energy, Год журнала: 2021, Номер 299, С. 120638 - 120638

Опубликована: Авг. 19, 2021

Язык: Английский

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NiCo-Based Electrocatalysts for the Alkaline Oxygen Evolution Reaction: A Review

ACS Catalysis, Год журнала: 2021, Номер 11(20), С. 12485 - 12509

Опубликована: Сен. 27, 2021

Electrocatalytic water splitting is a sustainable way to produce hydrogen energy, but the oxygen evolution reaction (OER) at anode has sluggish kinetics and low energy conversion efficiency, which major bottleneck for large-scale production. The design synthesis of robust low-cost OER catalysts are crucial OER. NiCo-based electrocatalysts have suitable atomic electronic structures, show high activity stability during process. Recently, significant progress been made in regulating structure composition understanding nature catalysis, especially mechanism, catalytic active sites, structure–activity relationship. In this work, we summarized discussed latest development OER, with particular emphasis on catalyst synthesis, strategies boosting performance, catalysis from experimental theoretical perspectives. some descriptors, relationships based unveiled. Finally, challenges futuristic outlooks improving performance proposed, hope review can provide guidance more efficient electrocatalysts.

Язык: Английский

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Designing a Built-In Electric Field for Efficient Energy Electrocatalysis

ACS Nano, Год журнала: 2022, Номер 16(12), С. 19959 - 19979

Опубликована: Дек. 15, 2022

To utilize intermittent renewable energy as well achieve the goals of peak carbon dioxide emissions and neutrality, various electrocatalytic devices have been developed. However, reactions, e.g., hydrogen evolution reaction/oxygen reaction in overall water splitting, polysulfide conversion lithium–sulfur batteries, formation/decomposition lithium peroxide lithium–oxygen nitrate reduction to degrade sewage, suffer from sluggish kinetics caused by multielectron transfer processes. Owing merits accelerated charge transport, optimized adsorption/desorption intermediates, raised conductivity, regulation microenvironment, ease combine with geometric characteristics, built-in electric field (BIEF) is expected overcome above problems. Here, we give a Review about very recent progress BIEF for efficient electrocatalysis. First, construction strategies characterization methods (qualitative quantitative analysis) are summarized. Then, up-to-date overviews engineering electrocatalysis, attention on electron structure optimization microenvironment modulation, analyzed discussed detail. In end, challenges perspectives proposed. This gives deep understanding design electrocatalysts next-generation storage devices.

Язык: Английский

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Electron Redistributed S‐Doped Nickel Iron Phosphides Derived from One‐Step Phosphatization of MOFs for Significantly Boosting Electrochemical Water Splitting

Advanced Functional Materials, Год журнала: 2022, Номер 32(23)

Опубликована: Март 3, 2022

Abstract Nonprecious transition metal‐organic frameworks (MOFs) are one of the most promising precursors for developing electrocatalysts with high porosity and structural rigidity. This study reports synthesis efficiency based on S‐doped NiFeP. MOF‐derived NiFeP structure is synthesized by a one‐step phosphorization process using MOFs as precursor, which more convenient environment friendly, also helps retain samples’ framework. The oxygen evolution reaction (OER) hydrogen (HER) performance catalysts can be improved after partially replacing P S due to tunable electronic structure. optimized CCS‐NiFeP‐10 reaches current density 10 mA cm –2 OER an overpotential 201 mV outperforms NiFe‐based catalysts. doping plays important role in tuning Δ G values intermediates formation Ni atoms suitable value exhibits pronouncedly performance. CCS‐NiFeP‐20 sample presents excellent HER d‐band center downshifting from Fermi level. When voltage electrolytic cell 1.50 V, obtained. strategy paves way designing highly active none‐noble metal

Язык: Английский

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Improved Interface Charge Transfer and Redistribution in CuO‐CoOOH p‐n Heterojunction Nanoarray Electrocatalyst for Enhanced Oxygen Evolution Reaction

Advanced Science, Год журнала: 2021, Номер 8(22)

Опубликована: Окт. 12, 2021

Abstract Electron density modulation is of great importance in an attempt to achieve highly active electrocatalysts for the oxygen evolution reaction (OER). Here, successful construction CuO@CoOOH p‐n heterojunction (i.e., p‐type CuO and n‐type CoOOH) nanoarray electrocatalyst through situ anodic oxidation CuO@CoS x on copper foam reported. The can remarkably modify electronic properties space‐charge region facilitate electron transfer. Moreover, Raman study reveals generation SO 4 2− from CoS oxidation, cloud distribution functional theory calculation suggest that surface‐adsorbed OER process by enhancing adsorption OH − . positively charged CoOOH significantly enhance activity. As a result, shows enhanced performance with low overpotential 186 mV afford current 10 mA cm −2 preparation large scale (14 × 25 2 ) sample demonstrates possibility promoting catalyst industrial‐scale production. This offers new insights into design fabrication non‐noble metal‐based as effective catalytic materials energy storage conversion.

Язык: Английский

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Breaking the symmetry of single-atom catalysts enables an extremely low energy barrier and high stability for large-current-density water splitting

Energy & Environmental Science, Год журнала: 2022, Номер 15(10), С. 4048 - 4057

Опубликована: Янв. 1, 2022

The single-atomic-site doping of oxophilic-metal (Ru) species in FeCo-LDH leads to the active atom reconstruction at symmetry-breaking interfaces and then excellent catalytic performance for OER/HER overall water splitting large current densities.

Язык: Английский

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W-doping induced abundant active sites in a 3D NiS2/MoO2 heterostructure as an efficient electrocatalyst for urea oxidation and hydrogen evolution reaction

Chemical Engineering Journal, Год журнала: 2021, Номер 432, С. 134274 - 134274

Опубликована: Дек. 30, 2021

Язык: Английский

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Lattice‐Strain Engineering for Heterogenous Electrocatalytic Oxygen Evolution Reaction

Advanced Materials, Год журнала: 2023, Номер 35(39)

Опубликована: Янв. 14, 2023

Abstract The energy efficiency of metal–air batteries and water‐splitting techniques is severely constrained by multiple electronic transfers in the heterogenous oxygen evolution reaction (OER), high overpotential induced sluggish kinetics has become an uppermost scientific challenge. Numerous attempts are devoted to enabling activity, selectivity, stability via tailoring surface physicochemical properties nanocatalysts. Lattice‐strain engineering as a cutting‐edge method for tuning geometric configuration metal sites plays pivotal role regulating interaction catalytic surfaces with adsorbate molecules. By defining d‐band center descriptor structure–activity relationship, individual contribution strain effects within state‐of‐the‐art electrocatalysts can be systematically elucidated OER optimization mechanism. In this review, fundamentals advancements strain‐catalysts showcased innovative trigger strategies enumerated, particular emphasis on feedback mechanism between precise regulation lattice‐strain optimal activity. Subsequently, modulation various attributes categorized impediments encountered practicalization strained effect discussed, ending outlook future research directions burgeoning field.

Язык: Английский

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