A corrosion-resistant RuMoNi catalyst for efficient and long-lasting seawater oxidation and anion exchange membrane electrolyzer

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: June 17, 2023

Direct seawater electrolysis is promising for sustainable hydrogen gas (H2) production. However, the chloride ions in lead to side reactions and corrosion, which result a low efficiency poor stability of electrocatalyst hinder use technology. Here we report corrosion-resistant RuMoNi electrocatalyst, situ-formed molybdate on its surface repel ions. The works stably over 3000 h at high current density 500 mA cm-2 alkaline electrolytes. Using catalyst an anion exchange membrane electrolyzer, energy conversion 77.9% 1000 1.72 V. calculated price per gallon gasoline equivalent (GGE) H2 produced $ 0.85, lower than 2026 technical target 2.0/GGE set by United Stated Department Energy, thus, suggesting practicability

Language: Английский

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Recent progress in transition-metal-oxide-based electrocatalysts for the oxygen evolution reaction in natural seawater splitting: A critical review

eScience, Journal Year: 2023, Volume and Issue: 3(2), P. 100111 - 100111

Published: Feb. 15, 2023

Direct electrolytic splitting of seawater for the production H2 using ocean energy is a promising technology that can help achieve carbon neutrality. However, owing to high concentrations chlorine ions in seawater, evolution reaction always competes with oxygen (OER) at anode, and chloride corrosion occurs on both anode cathode. Thus, effective electrocatalysts selectivity toward OER excellent resistance should be developed. In this critical review, we focus prospects state-of-the-art metal-oxide electrocatalysts, including noble metal oxides, non-noble oxides their compounds, spinel- perovskite-type splitting. We elucidate chemical properties, selectivity, outstanding anti-chlorine-corrosion performance, mechanisms. particular, review operate current densities, near industrial application levels, based special catalyst design strategies.

Language: Английский

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Advancements in hydrogen production, storage, distribution and refuelling for a sustainable transport sector: Hydrogen fuel cell vehicles

International Journal of Hydrogen Energy, Journal Year: 2023, Volume and Issue: 52, P. 973 - 1004

Published: Aug. 8, 2023

Hydrogen is considered as a promising fuel in the 21st century due to zero tailpipe CO2 emissions from hydrogen-powered vehicles. The use of hydrogen vehicles can play an important role decarbonising transport sector and achieving net-zero targets. However, there exist several issues related production, efficient storage system refuelling infrastructure, where current research focussing on. This study critically reviews analyses recent technological advancements distribution technologies along with their cost associated greenhouse gas emissions. paper also comprehensively discusses methods, identifies fast explores control strategies. Additionally, it explains various standard protocols relation safe refuelling, economic aspects presents infrastructure. suggests that production significantly varies one technology others. fossil sources using most established were estimated at about $0.8–$3.5/kg H2, depending on country production. underground exhibited lowest cost, followed by compressed liquid storage. levelised station was reported be $1.5–$8/kg station's capacity country. Using portable stations identified option many countries for small fleet size low-to-medium duty Following progresses, this end knowledge gaps thereby future directions.

Language: Английский

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Materials Design and System Innovation for Direct and Indirect Seawater Electrolysis

ACS Nano, Journal Year: 2023, Volume and Issue: 17(22), P. 22227 - 22239

Published: Nov. 15, 2023

Green hydrogen production from renewably powered water electrolysis is considered as an ideal approach to decarbonizing the energy and industry sectors. Given high-cost supply of ultra-high-purity water, well mismatched distribution sources renewable energies, combining seawater with coastal solar/offshore wind power attracting increasing interest for large-scale green production. However, various impurities in lead corrosive toxic halides, hydroxide precipitation, physical blocking, which will significantly degrade catalysts, electrodes, membranes, thus shortening stable service life electrolyzers. To accelerate development electrolysis, it crucial widen working potential gap between oxygen evolution chlorine reactions develop flexible highly efficient purification technologies. In this review, we comprehensively discuss present challenges, research efforts, design principles direct/indirect aspects materials engineering system innovation. Further opportunities developing advanced integrated electrolyzers are highlighted both low-grade sources.

Language: Английский

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High-performance multidimensional-structured N-doped nickel modulated Mo2N/FeOxNy bifunctional electrocatalysts for efficient alkaline seawater splitting

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151348 - 151348

Published: April 16, 2024

Language: Английский

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Electrocatalytic seawater splitting for hydrogen production: Recent progress and future prospects

Journal of Material Science and Technology, Journal Year: 2023, Volume and Issue: 162, P. 203 - 226

Published: May 19, 2023

Language: Английский

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Transition metal-based self-supported anode for electrocatalytic water splitting at a large current density

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 495, P. 215381 - 215381

Published: Aug. 19, 2023

Language: Английский

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Roles of Metal Oxide Nanostructure-Based Substrates in Sustainable Electrochemical Water Splitting: Recent Development and Future Perspective

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(3), P. 1631 - 1647

Published: Jan. 31, 2023

Increasing energy demand to find everlasting and eco-friendly resources is now mainly dependent on green hydrogen production technology. Water electrolysis has been regarded as a clean route for H2 with zero carbon emission, but different bottlenecks in the development of electrodes impeded its realization. Recently, transition metal oxides (TMO) have gained tremendous attention suitable cathodes anodes due their sustainability under harsh conditions, high redox features, maximum supportive capability, easy modulation valence states, enhanced electrical conductivity. In this review, we highlighted role active supported sites electrochemical water splitting. We proposed perspectives rational design TMO-based electrode materials, i.e., electronic state modulation, modification surface structure control aerophobicity hydrophilicity, acceleration charge mass transport, stability electrocatalyst environments. systemically discussed insights into relationship among catalytic activity, certain specified challenges, research directions, electrocatalysis OER HER.

Language: Английский

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Seawater electrolysis for fuels and chemicals production: fundamentals, achievements, and perspectives

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(14), P. 7455 - 7488

Published: Jan. 1, 2024

Seawater electrolysis for the production of fuels and chemicals involved in onshore offshore plants powered by renewable energies offers a promising avenue unique advantages energy environmental sustainability. Nevertheless, seawater presents long-term challenges issues, such as complex composition, potential side reactions, deposition poisoning microorganisms metal ions, well corrosion, thus hindering rapid development technology. This review focuses on value-added (hydrogen beyond) fine through electrolysis, step towards sustainable carbon neutrality. The principle related are first introduced, redox reaction mechanisms summarized. Strategies operating anodes cathodes including application chloride- impurity-resistant electrocatalysts/membranes reviewed. We comprehensively summarize (hydrogen, monoxide, sulfur, ammonia,

Language: Английский

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Is Direct Seawater Splitting Realistic with Conventional Electrolyzer Technologies?

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(7), P. 3351 - 3368

Published: June 14, 2024

Dihydrogen (H2) constitutes a promising energy carrier for transporting part of the world's demand and concomitantly reducing toxic emissions. Water electrolysis powered by renewable would provide H2 with small carbon footprint. To save global fresh water, seawater has attracted much attention in recent years, since it represents 96.5% Earth's resources is abundant worldwide. However, seawater's composition complex, which poses problems direct splitting. date, splitting usually requires two-step process, i.e., purification using reverse osmosis (RO) 69% globally produced desalinated water (Jones et al. Sci. Total Environ. 2019, 657, 1343–1356) then pure water. This involves two separate processes, resulting complex design significant space requirement their corresponding equipment. Recently, efforts have been made to use directly production, electrolyzers this source are being developed. The objective review describe first impact on technologies present most innovative approaches avoid pretreatment particular emphasis configurations well-established industrial new original approaches. Finally, as conclusion, we will propose perspectives toward development enabling electrochemical production from sustainable development.

Language: Английский

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