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

Advanced Materials, Journal Year: 2019, Volume and Issue: 32(3)

Published: April 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.

Language: Английский

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Electrocatalytic oxygen evolution reaction for energy conversion and storage: A comprehensive review

Nano Energy, Journal Year: 2017, Volume and Issue: 37, P. 136 - 157

Published: May 10, 2017

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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A review on noble-metal-free bifunctional heterogeneous catalysts for overall electrochemical water splitting

Journal of Materials Chemistry A, Journal Year: 2016, Volume and Issue: 4(45), P. 17587 - 17603

Published: Jan. 1, 2016

This review summarizes recent research progress and perspectives on noble-metal-free bifunctional heterogeneous electrocatalysts towards hydrogen oxygen evolution reactions in overall water splitting.

Language: Английский

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Nanoarchitectonics for Transition‐Metal‐Sulfide‐Based Electrocatalysts for Water Splitting

Advanced Materials, Journal Year: 2019, Volume and Issue: 31(17)

Published: Feb. 21, 2019

Abstract Heterogenous electrocatalysts based on transition metal sulfides (TMS) are being actively explored in renewable energy research because nanostructured forms support high intrinsic activities for both the hydrogen evolution reaction (HER) and oxygen (OER). Herein, it is described how researchers working to improve performance of TMS‐based materials by manipulating their internal external nanoarchitectures. A general introduction water‐splitting initially provided explain most important parameters accessing catalytic nanomaterials catalysts. Later, synthetic methods used prepare explained order delve into various strategies achieve higher electrocatalytic HER. Complementary can be increase OER TMS, resulting bifunctional HER OER. Finally, current challenges future opportunities TMS context water splitting summarized. The aim herein provide insights gathered process studying describe valuable guidelines engineering other kinds nanomaterial catalysts conversion storage technologies.

Language: Английский

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Efficient hydrogen production on MoNi4 electrocatalysts with fast water dissociation kinetics

Nature Communications, Journal Year: 2017, Volume and Issue: 8(1)

Published: May 17, 2017

Abstract Various platinum-free electrocatalysts have been explored for hydrogen evolution reaction in acidic solutions. However, economical water-alkali electrolysers, sluggish water dissociation kinetics (Volmer step) on results poor hydrogen-production activities. Here we report a MoNi 4 electrocatalyst supported by MoO 2 cuboids nickel foam (MoNi /MoO @Ni), which is constructed controlling the outward diffusion of atoms annealing precursor NiMoO foam. Experimental and theoretical confirm that rapid Tafel-step-decided proceeds electrocatalyst. As result, exhibits zero onset overpotential, an overpotential 15 mV at 10 mA cm −2 low Tafel slope 30 per decade 1 M potassium hydroxide electrolyte, are comparable to platinum superior those state-of-the-art electrocatalysts. Benefiting from its scalable preparation stability, promising practical electrolysers.

Language: Английский

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MoS₂–Ni₃S₂ Heteronanorods as Efficient and Stable Bifunctional Electrocatalysts for Overall Water Splitting

ACS Catalysis, Journal Year: 2017, Volume and Issue: 7(4), P. 2357 - 2366

Published: Feb. 16, 2017

Exploring noble-metal-free electrocatalysts with high efficiency for both the hydrogen evolution reaction (HER) and oxygen (OER) holds promise advancing production of H2 fuel through water splitting. Herein, one-pot synthesis was introduced MoS2–Ni3S2 heteronanorods supported by Ni foam (MoS2–Ni3S2 HNRs/NF), in which Ni3S2 nanorods were hierarchically integrated MoS2 nanosheets. The hierarchical allow not only good exposure highly active heterointerfaces but also facilitated charge transport along anchored on conducting nickel foam, accomplishing promoted kinetics activity HER, OER, overall optimal HNRs/NF presents low overpotentials (η10) 98 249 mV to reach a current density 10 mA cm–2 1.0 M KOH HER respectively. Assembled as an electrolyzer splitting, such show quite cell voltage 1.50 V at remarkable stability more than 48 h, are among best values electrocatalysts. This work elucidates rational design heterostructures efficient electrocatalysts, shedding some light development functional materials energy chemistry.

Language: Английский

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High-performance bifunctional porous non-noble metal phosphide catalyst for overall water splitting

Nature Communications, Journal Year: 2018, Volume and Issue: 9(1)

Published: June 25, 2018

Water electrolysis is an advanced energy conversion technology to produce hydrogen as a clean and sustainable chemical fuel, which potentially stores the abundant but intermittent renewable sources scalably. Since overall water splitting uphill reaction in low efficiency, innovative breakthroughs are desirable greatly improve efficiency by rationally designing non-precious metal-based robust bifunctional catalysts for promoting both cathodic evolution anodic oxygen reactions. We report hybrid catalyst constructed iron dinickel phosphides on nickel foams that drives reactions well base, thus substantially expedites at 10 mA cm-2 with 1.42 V, outperforms integrated iridium (IV) oxide platinum couple (1.57 V), among best activities currently. Especially, it delivers 500 1.72 V without decay even after durability test 40 h, providing great potential large-scale applications.

Language: Английский

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A Heterostructure Coupling of Exfoliated Ni–Fe Hydroxide Nanosheet and Defective Graphene as a Bifunctional Electrocatalyst for Overall Water Splitting

Advanced Materials, Journal Year: 2017, Volume and Issue: 29(17)

Published: March 3, 2017

Herein, the authors demonstrate a heterostructured NiFe LDH-NS@DG10 hybrid catalyst by coupling of exfoliated Ni-Fe layered double hydroxide (LDH) nanosheet (NS) and defective graphene (DG). The has exhibited extremely high electrocatalytic activity for oxygen evolution reaction (OER) in an alkaline solution with overpotential 0.21 V at current density 10 mA cm-2 , which is comparable to record (≈0.20 Fe-Co-Ni metal-oxide-film system) superior all other non-noble metal catalysts. Also, it possesses outstanding kinetics (Tafel slope 52 mV dec-1 ) reaction. Interestingly, also hydrogen (HER) performance (with 115 2 mg loading 20 contrast barely HER LDH-NS itself. As result, bifunctional developed can achieve voltage only 1.5 V, overall water splitting. Density functional theory calculation reveals that synergetic effects highly exposed 3d transition atoms carbon defects are essential OER HER.

Language: Английский

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