Electrochemical Water Splitting: Bridging the Gaps Between Fundamental Research and Industrial Applications

Energy & environment materials, Год журнала: 2022, Номер 6(5)

Опубликована: Май 28, 2022

Electrochemical water splitting represents one of the most promising technologies to produce green hydrogen, which can help realize goal achieving carbon neutrality. While substantial efforts on a laboratory scale have been made for understanding fundamental catalysis and developing high‐performance electrocatalysts two half‐reactions involved in electrocatalysis, much less attention has paid doing relevant research larger scale. For example, few such researches done an industrial Herein, we review very recent endeavors bridge gaps between applications electrolysis. We begin by introducing fundamentals electrochemical then present comparisons testing protocol, figure merit, catalyst interest, manufacturing cost industry‐based water‐electrolysis research. Special is tracking surface reconstruction process identifying real catalytic species under different conditions, highlight significant distinctions corresponding mechanisms. Advances designs industry‐relevant electrolysis are also summarized, reveal progress moving practical forward accelerating synergies material science engineering. Perspectives challenges electrocatalyst design strategies proposed finally further lab‐scale large‐scale electrocatalysis applications.

Язык: Английский

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Surface‐Adsorbed Carboxylate Ligands on Layered Double Hydroxides/Metal–Organic Frameworks Promote the Electrocatalytic Oxygen Evolution Reaction

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(33), С. 18129 - 18137

Опубликована: Май 13, 2021

Abstract Metal–organic frameworks (MOFs) with carboxylate ligands as co‐catalysts are very efficient for the oxygen evolution reaction (OER). However, role of local adsorbed around in‐situ‐transformed metal (oxy)hydroxides during OER is often overlooked. We reveal extraordinary and mechanism surface‐adsorbed on bi/trimetallic layered double hydroxides (LDHs)/MOFs electrocatalytic activity enhancement. The results X‐ray photoelectron spectroscopy (XPS), synchrotron absorption spectroscopy, density functional theory (DFT) calculations show that carboxylic groups can efficiently induce interfacial electron redistribution, facilitate an abundant high‐valence state nickel species a partially distorted octahedral structure, optimize d‐band center together beneficial Gibbs free energy intermediate. Furthermore, in situ Raman FTIR spectra Lewis base promote sluggish kinetics by accelerating proton transfer facilitating adsorption, activation, dissociation hydroxyl ions (OH − ).

Язык: Английский

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Interfacial electronic modulation by Fe2O3/NiFe-LDHs heterostructures for efficient oxygen evolution at high current density

Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 306, С. 121097 - 121097

Опубликована: Янв. 13, 2022

Язык: Английский

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A review of modulation strategies for improving catalytic performance of transition metal phosphides for oxygen evolution reaction

Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 325, С. 122313 - 122313

Опубликована: Дек. 21, 2022

Язык: Английский

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In Situ Electronic Redistribution Tuning of NiCo₂S₄ Nanosheets for Enhanced Electrocatalysis

Advanced Functional Materials, Год журнала: 2021, Номер 32(14)

Опубликована: Дек. 17, 2021

Abstract Metal Ru and vacancy engineering play an important role in oxygen evolution reaction (OER) hydrogen (HER). However, there are few reports targeted on electrocatalysts by simultaneously employing these two strategies. Herein, theoretical calculation firstly predicts that V S can regulate the adsorption energy of OER/HER intermediates for NiCo 2 4 electrocatalysts. Then, a facile solvothermal‐photochemical strategy is utilized to synthesis series samples: through filling solvothermal‐created 4–x with single atoms (Ru‐NiCo ) under ultraviolet irradiation as OER catalysts. Besides, nanoclusters introduced into without HER. As result, exchange current density prominently boosted after decoration atom, which possesses eminently low overpotential 190 mV@50 mA cm −2 , while Ru‐NiCo shows superior HER performance (32 mV@10 compared surpassing most reported electrocatalytic materials. Moreover, //Ru‐NiCo exhibits remarkable stability catalytic overall water splitting, cell voltage value 1.46 at 10 1.0 m KOH. Bader charge analysis unravels “restricted‐delocalized‐restricted” phenomenon between electrons promote electron interactions, turn improves electrochemical performance.

Язык: Английский

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Recent advances in interface engineering strategy for highly‐efficient electrocatalytic water splitting

InfoMat, Год журнала: 2022, Номер 5(1)

Опубликована: Окт. 13, 2022

Abstract The hydrogen energy generated by the electrocatalytic water splitting reaction has been established as a renewable and clean carrier with ultra‐high density, which can well make up for shortcomings of conventional sources, such geographical limitations, climatic dependence, wastage. Notably, introduction electrocatalysts enhance efficiency process to generate hydrogen. Particularly, heterostructure constructed coupling multiple components (or phases) have emerged most promising option due well‐known electronic synergistic effects. existing reviews on interface engineering electrocatalyst design mostly focus relationship between heterostructures specific reactions. However, comprehensive overview integration model building, directional synthesis, mechanism rarely reported. To this end, in review, development catalysts is systematically introduced from perspective classification, growth regulation performance based interfacial microenvironment (bonding, configuration, lattice strain, etc.), thereby offering useful insights construction models. Besides, combined current applications strategies, challenges future are discussed relevant solutions proposed. Overall, review serve theoretical reference mechanism, further promote production technologies low consumption high yield. image

Язык: Английский

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Oxygen Vacancy Engineering Synergistic with Surface Hydrophilicity Modification of Hollow Ru Doped CoNi‐LDH Nanotube Arrays for Boosting Hydrogen Evolution

Small, Год журнала: 2021, Номер 18(2)

Опубликована: Ноя. 5, 2021

With the development of clean hydrogen energy, cost effective and high-performance evolution reaction (HER) electrocatalysts are urgently required. Herein, a green, facile, time-efficient Ru doping synergistic with air-plasma treatment strategy is reported to boost HER performance CoNi-layered double hydroxide (LDH) nanotube arrays (NTAs) derived from zeolitic imidazolate framework nanorods. The not only regulate oxygen vacancy optimize electron structure but also increase surface roughness improve hydrophilicity spillover efficiency. Therefore, air plasma treated doped CoNi-LDH (P-Ru-CoNi-LDH) display superior an overpotential 29 mV at current density 10 mA cm-2 . Furthermore, by assembling P-Ru-CoNi-LDH as both cathode anode for two-electrode urea-assisted water electrolysis, small cell voltage 1.36 V needed can last 100 h without any obvious activity attenuation that showing outstanding durability. In general, intrinsic electronic regulation cooperated extrinsic wettability modification. These findings provide effect avenue develop high electrocatalysts, which potential be applied other research fields.

Язык: Английский

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The key role of carboxylate ligands in Ru@Ni-MOFs/NF in promoting water dissociation kinetics for effective hydrogen evolution in alkaline media

Chemical Engineering Journal, Год журнала: 2022, Номер 451, С. 138618 - 138618

Опубликована: Авг. 12, 2022

Язык: Английский

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F doping and P vacancy engineered FeCoP nanosheets for efficient and stable seawater electrolysis at large current density

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 328, С. 122487 - 122487

Опубликована: Фев. 20, 2023

Язык: Английский

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Highly Efficient and Stable Saline Water Electrolysis Enabled by Self‐Supported Nickel‐Iron Phosphosulfide Nanotubes With Heterointerfaces and Under‐Coordinated Metal Active Sites

Advanced Functional Materials, Год журнала: 2022, Номер 32(38)

Опубликована: Июль 13, 2022

Abstract Direct seawater electrolysis is proposed as a potential low‐cost approach to green hydrogen production, taking advantage of the vastly available and large‐scale offshore renewable energy being deployed. However, developing efficient, earth‐abundant electrocatalysts that can survive under harsh corrosive conditions for long time still significant technical challenge. Herein, fabrication self‐supported nickel‐iron phosphosulfide (NiFeSP) nanotube array electrode through two‐step sulfurization/phosphorization reported. The as‐obtained NiFeSP nanotubes comprise abundant NiFeS/NiFeP heterointerfaces under‐coordinated metal sites, exhibiting outstanding activity durability oxygen evolution reactions (HER OER) in simulated alkaline‐seawater solution (KOH + NaCl), with an overpotential 380 (HER) 260 mV (OER) at 500 mA cm ‐2 1000 h. Theoretical calculations support observed performance, showing heterointerface sites synergistically lower barrier rate‐determining step reactions. also shows good catalytic performance urea oxidation reaction (UOR). By coupling UOR HER, bifunctional pair efficiently catalyze overall urea‐mediated alkaline‐saline water 1.938 V h without notable degradation.

Язык: Английский

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