Recent Advances in Electrocatalytic Hydrogen Evolution Using Nanoparticles

Chemical Reviews, Journal Year: 2019, Volume and Issue: 120(2), P. 851 - 918

Published: Oct. 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.

Language: Английский

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

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(31)

Published: June 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.

Language: Английский

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Recent advances in transition metal-based electrocatalysts for alkaline hydrogen evolution

Journal of Materials Chemistry A, Journal Year: 2019, Volume and Issue: 7(25), P. 14971 - 15005

Published: Jan. 1, 2019

Transition metal-based electrocatalysts for alkaline hydrogen evolution reaction.

Language: Английский

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Non-precious-metal catalysts for alkaline water electrolysis: operando characterizations, theoretical calculations, and recent advances

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(24), P. 9154 - 9196

Published: Jan. 1, 2020

Advances of non-precious-metal catalysts for alkaline water electrolysis are reviewed, highlighting operando techniques and theoretical calculations in their development.

Language: Английский

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Anion‐Modulated HER and OER Activities of 3D Ni–V‐Based Interstitial Compound Heterojunctions for High‐Efficiency and Stable Overall Water Splitting

Advanced Materials, Journal Year: 2019, Volume and Issue: 31(23)

Published: April 16, 2019

Overall water splitting driven by a low voltage is crucial for practical H2 evolution, but it challenging. Herein, anion-modulation of 3D Ni-V-based transition metal interstitial compound (TMIC) heterojunctions supported on nickel foam (Ni3 N-VN/NF and Ni2 P-VP2 /NF) as coupled hydrogen evolution reaction (HER) oxygen (OER) catalysts efficient overall demonstrated. The heterointerface in Ni3 N-VN has suitable H* absorption energy, being favorable enhancing HER activity with onset overpotential (ηonset ) zero Tafel slope 37 mV dec-1 1 m KOH (close to that Pt/C/NF). For the OER, synergy oxide species can give enhanced ηonset 220 49 . good ascribed activating intermediates, conductivity TMICs electron-transfer, porous structure facilitation mass-transport. Additionally, minimal mutual influence /NF allows easy coupling driving (≥1.43 V), 1.51 V at 10 mA cm-2 , remarkable durability 100 h. It be solar cell (1.5 indicating its potential store intermittent energy.

Language: Английский

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Interface Engineering of Hierarchical Branched Mo‐Doped Ni₃S₂/Ni_xP_y Hollow Heterostructure Nanorods for Efficient Overall Water Splitting

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 10(17)

Published: March 16, 2020

Abstract Rational design and construction of bifunctional electrocatalysts with excellent activity durability is imperative for water splitting. Herein, a novel top‐down strategy to realize hierarchical branched Mo‐doped sulfide/phosphide heterostructure (Mo‐Ni 3 S 2 /Ni x P y hollow nanorods), by partially phosphating Mo‐Ni /NF flower clusters, proposed. Benefitting from the optimized electronic structure configuration, nanorod structure, abundant heterogeneous interfaces, as‐obtained multisite electrode has remarkable stability electrocatalytic in hydrogen evolution reaction (HER)/oxygen (OER) 1 m KOH solutions. It possesses an extremely low overpotential 238 mV at current density 50 mA cm −2 OER. Importantly, when assembled as anode cathode simultaneously, it merely requires ultralow cell voltage 1.46 V achieve 10 , over 72 h, outperforming most reported Ni‐based materials. Density functional theory results further confirm that doped can synergistically optimize Gibbs free energies H O‐containing intermediates (OH*, O*, OOH*) during HER OER processes, thus accelerating catalytic kinetics electrochemical This work demonstrates importance rational combination metal doping interface engineering advanced

Language: Английский

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Defect Engineering in Carbon‐Based Electrocatalysts: Insight into Intrinsic Carbon Defects

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(25)

Published: April 3, 2020

Abstract Functionalized carbon nanomaterials, as significant options for renewable energy systems, are widely utilized in diversified electrochemical reactions virtue of property advantages. The inevitable defect sites architectures greatly affect physicochemical properties thus engineering has recently become a vital research orientation carbon‐based electrocatalysts. intentionally introduced intrinsic the frameworks can directly serve potential active owing to altered surface charge state, modulated adsorption free key intermediates, well diminished bandgap. Furthermore, synergistic between defects and heteroatom dopants/captured atomic metal species further optimize electronic structure adsorption/desorption behavior, making catalysts comparable commercial precious electrocatalysis. With pressing demands, common configurations, construction strategies, structure–activity relationships, characterization methods defect‐involved catalytic centers systematically summarized. Such theoretical experimental evidences defect‐induced activity reveal relevant mechanism, thereby providing necessary guidance design highly efficient electrocatalysts promoting their applications.

Language: Английский

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Recent development in electrocatalysts for hydrogen production through water electrolysis

International Journal of Hydrogen Energy, Journal Year: 2021, Volume and Issue: 46(63), P. 32284 - 32317

Published: July 30, 2021

Language: Английский

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Designing Atomic Active Centers for Hydrogen Evolution Electrocatalysts

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(47), P. 20794 - 20812

Published: Jan. 8, 2020

The evolution of hydrogen from water using renewable electrical energy is a topic current interest. Pt/C exhibits the highest catalytic activity for H2 reaction (HER), but scarce supplies and high cost limit its large-scale application. Atomic active centers in single-atom catalysts, alloys, catalysts with two atom sorts exhibit maximum atomic efficiency, unique structure, exceptional HER. Interactions between well-defined sites supports are known to affect electron transfer dramatically accelerate reaction. This Review first highlights methods studying Then, different coordination configurations described. Active one metal atom, atoms as well nonmetal analyzed at scale. Finally, future research perspectives proposed.

Language: Английский

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Regulating the Electronic Structure of CoP Nanosheets by O Incorporation for High‐Efficiency Electrochemical Overall Water Splitting

Advanced Functional Materials, Journal Year: 2019, Volume and Issue: 30(7)

Published: Dec. 15, 2019

Abstract The exploration of earth‐abundant and high‐efficiency bifunctional electrocatalysts for overall water splitting is vital importance the future hydrogen economy. Regulation electronic structure through heteroatom doping represents one most powerful strategies to boost electrocatalytic performance evolution reaction (HER) oxygen (OER). Herein, a rational design O‐incorporated CoP (denoted as O‐CoP) nanosheets, which synergistically integrate favorable thermodynamics modification structures with accelerated kinetics nanostructuring, reported. Experimental results density functional theory simulations manifest that appropriate O incorporation into can dramatically modulate alter adsorption free energies intermediates, thus promoting HER OER activities. Specifically, optimized O‐CoP nanosheets exhibit efficient in alkaline electrolyte, requiring overpotentials 98 310 mV deliver current 10 mA cm −2 OER, respectively. When served splitting, low cell voltage 1.60 V needed achieving . This proposed anion‐doping strategy will bring new inspiration transition metal–based energy conversion applications.

Language: Английский

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