Support and Interface Effects in Water‐Splitting Electrocatalysts

Advanced Materials, Год журнала: 2019, Номер 31(31)

Опубликована: Март 6, 2019

Water-splitting electrolyzers that can convert electricity into storable hydrogen are a fascinating and scalable energy conversion technology for the utilization of renewable energies. To speed up sluggish oxygen evolution reactions (HER OER), electrocatalysts essential reducing their kinetic barriers eventually improving efficiency. As efficient strategies modulating binding ability water-splitting intermediates on electrocatalyst surface, support effect interface drawing growing attention. Herein, some recent research progress effects in HER, OER, overall is highlighted. Specifically, correlation between electronic interaction constituent components electrocatalytic performance profoundly discussed, with aim advancing development highly electrocatalysts, which may replace noble-metal-based bring practically widespread reality.

Язык: Английский

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The roles of oxygen vacancies in electrocatalytic oxygen evolution reaction

Nano Energy, Год журнала: 2020, Номер 73, С. 104761 - 104761

Опубликована: Апрель 15, 2020

Язык: Английский

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Recent advances in activating surface reconstruction for the high-efficiency oxygen evolution reaction

Chemical Society Reviews, Год журнала: 2021, Номер 50(15), С. 8428 - 8469

Опубликована: Янв. 1, 2021

The recent progress in activating surface reconstruction by integrating advanced characterizations with theoretical calculations for high-efficiency oxygen evolution reaction is reviewed.

Язык: Английский

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Recent Progress on Layered Double Hydroxides and Their Derivatives for Electrocatalytic Water Splitting

Advanced Science, Год журнала: 2018, Номер 5(8)

Опубликована: Май 23, 2018

Abstract Layered double hydroxide (LDH)‐based materials have attracted widespread attention in various applications due to their unique layered structure with high specific surface area and electron distribution, resulting a good electrocatalytic performance. Moreover, the existence of multiple metal cations invests flexible tunability host layers; intercalation characteristics lead ion exchange exfoliation. Thus, performance can be tuned by regulating morphology, composition, ion, However, poor conductivity limits performance, which therefore has motivated researchers combine them conductive improve Another factor hampering activity is large lateral size bulk thickness LDHs. Introducing defects tuning electronic LDH‐based are considered effective strategies increase number active sites enhance intrinsic activity. Given advantages materials, derivatives been also used as advanced electrocatalysts for water splitting. Here, recent progress on LDHs splitting summarized, current designing proposed, significant challenges perspectives discussed.

Язык: Английский

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Nickel Nanoparticles Encapsulated in Few‐Layer Nitrogen‐Doped Graphene Derived from Metal–Organic Frameworks as Efficient Bifunctional Electrocatalysts for Overall Water Splitting

Advanced Materials, Год журнала: 2017, Номер 29(11)

Опубликована: Янв. 19, 2017

Nickel nanoparticles encapsulated in few-layer nitrogen-doped graphene (Ni@NC) are synthesized by using a Ni-based metal-organic framework as the precursor for high-temperature annealing treatment. The resulting Ni@NC materials exhibit highly efficient and ultrastable electrocatalytic activity toward hydrogen evolution reaction oxygen well overall water splitting alkaline environment.

Язык: Английский

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Hybrid 2D Dual‐Metal–Organic Frameworks for Enhanced Water Oxidation Catalysis

Advanced Functional Materials, Год журнала: 2018, Номер 28(26)

Опубликована: Апрель 30, 2018

Abstract Metal–organic frameworks (MOFs) and MOF‐derived nanostructures are recently emerging as promising catalysts for electrocatalysis applications. Herein, 2D MOFs nanosheets decorated with Fe‐MOF nanoparticles synthesized evaluated the water oxidation catalysis in alkaline medium. A dramatic enhancement of catalytic activity is demonstrated by introduction electrochemically inert onto active nanosheets. In case Ni‐MOF (Ni‐MOF@Fe‐MOF), overpotential 265 mV to reach a current density 10 mA cm −2 1 m KOH, which lowered ≈100 after hybridization due nanosheet morphology synergistic effect between Ni centers Fe species. Similar performance improvement also successfully NiCo‐MOF More importantly, real species hybrid Ni‐MOF@Fe‐MOF catalyst unraveled. It found that, NiO nanograins (≈5 nm) formed situ during oxygen evolution reaction (OER) process act OER well building blocks porous catalysts. These findings provide new insights into understanding MOF‐based catalysis, shed light on designing highly efficient electrocatalysis.

Язык: Английский

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The Green ChemisTREE: 20 years after taking root with the 12 principles

Green Chemistry, Год журнала: 2018, Номер 20(9), С. 1929 - 1961

Опубликована: Янв. 1, 2018

A broad overview of the achievements and emerging areas in field Green Chemistry.

Язык: Английский

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Single‐Atom Catalysts for Electrocatalytic Applications

Advanced Functional Materials, Год журнала: 2020, Номер 30(31)

Опубликована: Июнь 9, 2020

Abstract The recent advances in electrocatalysis for oxygen reduction reaction (ORR), evolution (OER), hydrogen (HER), oxidation (HOR), carbon dioxide (CO 2 RR), and nitrogen (NRR) are thoroughly reviewed. This comprehensive review focuses on the single‐atom catalysts (SACs) including Sc, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, Sn, W, Bi, Ru, Rh, Pd, Ag, Ir, Pt, Au with single‐metal sites or dual‐metal sites. development of electrocatalysts novel configurations compositions is documented. understanding process–structure–property relationships highlighted. For SACs, their electrocatalytic performance stability fuel cells, zinc–air batteries, electrolyzers, CO RR, NRR summarized. challenges perspectives emerging field discussed.

Язык: Английский

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Application of In Situ Techniques for the Characterization of NiFe‐Based Oxygen Evolution Reaction (OER) Electrocatalysts

Angewandte Chemie International Edition, Год журнала: 2018, Номер 58(5), С. 1252 - 1265

Опубликована: Апрель 17, 2018

Abstract Developing high‐efficiency and affordable electrocatalysts for the sluggish oxygen evolution reaction (OER) remains a crucial bottleneck on way to practical applications of rechargeable energy storage technologies water splitting producing clean fuel (H 2 ). In recent years, NiFe‐based materials have proven be excellent OER. Understanding characteristics that affect OER activity determining mechanism are vital importance development electrocatalysts. Therefore, in situ characterization techniques performed under conditions urgently needed monitor key intermediates together with identifying active centers phases. this Minireview, advances regarding thoroughly summarized, including Raman spectroscopy, X‐ray absorption ambient pressure photoelectron Mössbauer Ultraviolet–visible differential electrochemical mass spectrometry, surface interrogation scanning microscopy. The results from these measurements not only reveal structural transformation progressive oxidation catalytic species conditions, but also disclose role Ni Fe during Finally, need developing new theoretical investigations is discussed better understand design promising

Язык: Английский

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Plasma‐Assisted Synthesis and Surface Modification of Electrode Materials for Renewable Energy

Advanced Materials, Год журнала: 2018, Номер 30(21)

Опубликована: Фев. 14, 2018

Abstract Renewable energy technology has been considered as a “MUST” option to lower the use of fossil fuels for industry and daily life. Designing critical sophisticated materials is great importance in order realize high‐performance technology. Typically, efficient synthesis soft surface modification nanomaterials are important Therefore, there increasing demands on rational design electrocatalysts or electrode materials, which key scalable practical electrochemical devices. Nevertheless, development versatile cheap strategies one main challenges achieve aforementioned goals. Accordingly, plasma recently appeared an extremely promising alternative Here, recent progress nonthermal highlighted advanced renewable including fuel cells, water splitting, metal–air batteries, batteries supercapacitors, etc.

Язык: Английский

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