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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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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Electrochemical nitrogen fixation and utilization: theories, advanced catalyst materials and system design

Chemical Society Reviews, Год журнала: 2019, Номер 48(24), С. 5658 - 5716

Опубликована: Янв. 1, 2019

Nitrogen is a fundamental constituent for all living creatures on the Earth and modern industrial society. The current nitrogen industry largely powered by fossil fuels with huge energy consumption carbon dioxide emission, pollution in surface water bodies induced indiscriminate discharge of domestic wastewater has become worldwide environmental concern. Electrochemical techniques fixation transformation under mild conditions are promising approaches to meet challenge efficiently managing balancing cycle, where rational design advanced electrocatalysts from both structural compositional aspects down nanoscale plays most essential role. Herein, important species including dinitrogen (N2), ammonia (NH3) hydrazine (N2H4), their processes between each other reduction reaction (NRR), oxidation (AOR) (HzOR), research progress development related systematically summarized, aiming at establishing general picture whole cycle instead certain single reaction. Strategies combining theoretical computations experimental optimizations proposed improve catalytic performance activity, efficiency, selectivity stability, finally contributing self-sufficient carbon-free "green" economy.

Язык: Английский

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

Chemical Society Reviews, Год журнала: 2020, Номер 49(24), С. 9154 - 9196

Опубликована: Янв. 1, 2020

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

Язык: Английский

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Activity Origins and Design Principles of Nickel-Based Catalysts for Nucleophile Electrooxidation

Chem, Год журнала: 2020, Номер 6(11), С. 2974 - 2993

Опубликована: Авг. 18, 2020

Язык: Английский

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Nickel ferrocyanide as a high-performance urea oxidation electrocatalyst

Nature Energy, Год журнала: 2021, Номер 6(9), С. 904 - 912

Опубликована: Сен. 20, 2021

Язык: Английский

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Nickel-molybdenum nitride nanoplate electrocatalysts for concurrent electrolytic hydrogen and formate productions

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

Опубликована: Ноя. 25, 2019

Hydrogen production by electrocatalytic water splitting is an efficient and economical technology, however, severely impeded the kinetic-sluggish low value-added anodic oxygen evolution reaction. Here we report nickel-molybdenum-nitride nanoplates loaded on carbon fiber cloth (Ni-Mo-N/CFC), for concurrent electrolytic productions of high-purity hydrogen at cathode formate anode in low-cost alkaline glycerol solutions. Especially, when equipped with Ni-Mo-N/CFC both cathode, established electrolyzer requires as 1.36 V cell voltage to achieve 10 mA cm-2, which 260 mV lower than that aqueous solution. Moreover, high Faraday efficiencies 99.7% H2 95.0% have been obtained. Based excellent electrochemical performances Ni-Mo-N/CFC, from solutions are energy-efficient promising technology renewable clean energy supply future.

Язык: Английский

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“Superaerophobic” Nickel Phosphide Nanoarray Catalyst for Efficient Hydrogen Evolution at Ultrahigh Current Densities

Journal of the American Chemical Society, Год журнала: 2019, Номер 141(18), С. 7537 - 7543

Опубликована: Апрель 22, 2019

The design of highly efficient non-noble-metal electrocatalysts for large-scale hydrogen production remains an ongoing challenge. We report here a Ni2P nanoarray catalyst grown on commercial Ni foam substrate, which demonstrates outstanding electrocatalytic activity and stability in basic electrolyte. high catalytic can be attributed to the favorable electron transfer, superior intrinsic activity, intimate connection between nanoarrays their substrate. Moreover, unique "superaerophobic" surface feature enables remarkable capability withstand internal external forces release situ generated H2 bubbles timely manner at large current densities (such as >1000 mA cm-2) where evolution becomes vigorous. Our results highlight that aerophobic structure is essential catalyze gas practical applications.

Язык: Английский

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Designing Advanced Catalysts for Energy Conversion Based on Urea Oxidation Reaction

Small, Год журнала: 2020, Номер 16(7)

Опубликована: Янв. 8, 2020

Urea oxidation reaction (UOR) is the underlying that determines performance of modern urea-based energy conversion technologies. These technologies include electrocatalytic and photoelectrochemical urea splitting for hydrogen production direct fuel cells as power engines. They have demonstrated great potentials alternatives to current water cell systems with more favorable operating conditions cost effectiveness. At moment, UOR mainly limited by 6-electron transfer process. In this case, various material design synthesis strategies recently been reported produce highly efficient catalysts. The these advanced catalysts optimized modification their structural chemical properties, including porosity development, heterostructure construction, defect engineering, surface functionalization, electronic structure modulation. Considering rich progress in field, recent advances electrolysis, splitting, are reviewed here. Particular attention paid those concepts, which specifically target characteristics molecules. Moreover, challenges prospects future development corresponding also discussed.

Язык: Английский

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Efficient electrochemical production of glucaric acid and H2 via glucose electrolysis

Nature Communications, Год журнала: 2020, Номер 11(1)

Опубликована: Янв. 14, 2020

Abstract Glucose electrolysis offers a prospect of value-added glucaric acid synthesis and energy-saving hydrogen production from the biomass-based platform molecules. Here we report that nanostructured NiFe oxide (NiFeO x ) nitride (NiFeN catalysts, synthesized layered double hydroxide nanosheet arrays on three-dimensional Ni foams, demonstrate high activity selectivity towards anodic glucose oxidation. The electrolytic cell assembled with these two catalysts can deliver 100 mA cm −2 at 1.39 V. A faradaic efficiency 87% yield 83% are obtained electrolysis, which takes place via guluronic pathway evidenced by in-situ infrared spectroscopy. rigorous process model combined techno-economic analysis shows electrochemical reduction produces 54% lower cost than current chemical approach. This work suggests is an cost-effective approach for H 2 biomass valorization.

Язык: Английский

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