Recent Advances in Electrocatalytic Hydrogen Evolution Using Nanoparticles

Chemical Reviews, Год журнала: 2019, Номер 120(2), С. 851 - 918

Опубликована: Окт. 28, 2019

Hydrogen fuel is considered as the cleanest renewable resource and primary alternative to fossil fuels for future energy supply. Sustainable hydrogen generation major prerequisite realize economy. The electrocatalytic evolution reaction (HER), vital step of water electrolysis H2 production, has been subject extensive study over past decades. In this comprehensive review, we first summarize fundamentals HER review recent state-of-the-art advances in low-cost high-performance catalysts based on noble non-noble metals, well metal-free electrocatalysts. We systemically discuss insights into relationship among catalytic activity, morphology, structure, composition, synthetic method. Strategies developing an effective catalyst, including increasing intrinsic activity active sites and/or number sites, are summarized highlighted. Finally, challenges, perspectives, research directions electrocatalysis featured.

Язык: Английский

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Self‐Supported Transition‐Metal‐Based Electrocatalysts for Hydrogen and Oxygen Evolution

Advanced Materials, Год журнала: 2019, Номер 32(3)

Опубликована: Апрель 1, 2019

Abstract Electrochemical water splitting is a promising technology for sustainable conversion, storage, and transport of hydrogen energy. Searching earth‐abundant hydrogen/oxygen evolution reaction (HER/OER) electrocatalysts with high activity durability to replace noble‐metal‐based catalysts plays paramount importance in the scalable application electrolysis. A freestanding electrode architecture highly attractive as compared conventional coated powdery form because enhanced kinetics stability. Herein, recent progress developing transition‐metal‐based HER/OER electrocatalytic materials reviewed selected examples chalcogenides, phosphides, carbides, nitrides, alloys, phosphates, oxides, hydroxides, oxyhydroxides. Focusing on self‐supported electrodes, latest advances their structural design, controllable synthesis, mechanistic understanding, strategies performance enhancement are presented. Remaining challenges future perspectives further development also discussed.

Язык: Английский

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Clean and Affordable Hydrogen Fuel from Alkaline Water Splitting: Past, Recent Progress, and Future Prospects

Advanced Materials, Год журнала: 2021, Номер 33(31)

Опубликована: Июнь 12, 2021

Abstract Hydrogen economy has emerged as a very promising alternative to the current hydrocarbon economy, which involves process of harvesting renewable energy split water into hydrogen and oxygen then further utilization clean fuel. The production by electrolysis is an essential prerequisite with zero carbon emission. Among various technologies, alkaline splitting been commercialized for more than 100 years, representing most mature economic technology. Here, historic development overviewed, several critical electrochemical parameters are discussed. After that, advanced nonprecious metal electrocatalysts that recently negotiating evolution reaction (OER) (HER) discussed, including transition oxides, (oxy)hydroxides, chalcogenides, phosphides, nitrides OER, well alloys, carbides HER. In this section, particular attention paid catalyst synthesis, activity stability challenges, performance improvement, industry‐relevant developments. Some recent works about scaled‐up novel electrode designs, seawater also spotlighted. Finally, outlook on future challenges opportunities offered, potential directions speculated.

Язык: Английский

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Non-noble metal-nitride based electrocatalysts for high-performance alkaline seawater electrolysis

Nature Communications, Год журнала: 2019, Номер 10(1)

Опубликована: Ноя. 8, 2019

Abstract Seawater is one of the most abundant natural resources on our planet. Electrolysis seawater not only a promising approach to produce clean hydrogen energy, but also great significance desalination. The implementation electrolysis requires robust and efficient electrocatalysts that can sustain splitting without chloride corrosion, especially for anode. Here we report three-dimensional core-shell metal-nitride catalyst consisting NiFeN nanoparticles uniformly decorated NiMoN nanorods supported Ni foam, which serves as an eminently active durable oxygen evolution reaction alkaline electrolysis. Combined with nanorods, have achieved industrially required current densities 500 1000 mA cm −2 at record low voltages 1.608 1.709 V, respectively, overall 60 °C. This discovery significantly advances development large-scale production.

Язык: Английский

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Tailoring the d‐Band Centers Enables Co₄N Nanosheets To Be Highly Active for Hydrogen Evolution Catalysis

Angewandte Chemie International Edition, Год журнала: 2018, Номер 57(18), С. 5076 - 5080

Опубликована: Март 2, 2018

Abstract Endowing materials with specific functions that are not readily available is always of great importance, but extremely challenging. Co 4 N, its beneficial metallic characteristics, has been proved to be highly active for the oxidation water, while it notoriously poor catalyzing hydrogen evolution reaction (HER), because unfavorable d‐band energy level. Herein, we successfully endow N prominent HER catalytic capability by tailoring positions center through transition‐metal doping. The V‐doped nanosheets display an overpotential 37 mV at 10 mA cm −2 , which substantially better than and even close benchmark Pt/C catalysts. XANES, UPS, DFT calculations consistently reveal enhanced performance attributed downshift center, helps facilitate H desorption. This concept could provide valuable insights into design other catalysts beyond.

Язык: Английский

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Accelerated Hydrogen Evolution Kinetics on NiFe‐Layered Double Hydroxide Electrocatalysts by Tailoring Water Dissociation Active Sites

Advanced Materials, Год журнала: 2018, Номер 30(10)

Опубликована: Янв. 19, 2018

Abstract Owing to its earth abundance, low kinetic overpotential, and superior stability, NiFe‐layered double hydroxide (NiFe‐LDH) has emerged as a promising electrocatalyst for catalyzing water splitting, especially oxygen evolution reaction (OER), in alkaline solutions. Unfortunately, result of extremely sluggish dissociation kinetics (Volmer step), hydrogen (HER) activity the NiFe‐LDH is rather poor environment. Here novel strategy demonstrated substantially accelerating by partially substituting Fe atoms with Ru. In 1 m KOH solution, as‐synthesized Ru‐doped nanosheets (NiFeRu‐LDH) exhibit excellent HER performance an overpotential 29 mV at 10 mA cm −2 , which much lower than those noble metal Pt/C reported electrocatalysts. Both experimental theoretical results reveal that introduction Ru into can efficiently reduce energy barrier Volmer step, eventually kinetics. Benefitting from outstanding remained OER activity, NiFeRu‐LDH steadily drives electrolyzer current density cell voltage 1.52 V, values Pt/C–Ir/C couple state‐of‐the‐art overall water‐splitting

Язык: Английский

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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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Identification of single-atom active sites in carbon-based cobalt catalysts during electrocatalytic hydrogen evolution

Nature Catalysis, Год журнала: 2018, Номер 2(2), С. 134 - 141

Опубликована: Дек. 13, 2018

Язык: Английский

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Ni–Mo–O nanorod-derived composite catalysts for efficient alkaline water-to-hydrogen conversion via urea electrolysis

Energy & Environmental Science, Год журнала: 2018, Номер 11(7), С. 1890 - 1897

Опубликована: Янв. 1, 2018

Two Ni–Mo–O compounds show exceptional cathodic/anodic catalytic performance for urea electrolysis, suggesting a promising route to energy-saving H₂ production.

Язык: Английский

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Ultrafast room-temperature synthesis of porous S-doped Ni/Fe (oxy)hydroxide electrodes for oxygen evolution catalysis in seawater splitting

Energy & Environmental Science, Год журнала: 2020, Номер 13(10), С. 3439 - 3446

Опубликована: Янв. 1, 2020

A robust oxygen-evolving electrocatalyst for high-performance seawater splitting was developed using a cost-effective and industrially compatible method.

Язык: Английский

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