Water electrolysis: from textbook knowledge to the latest scientific strategies and industrial developments

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(11), P. 4583 - 4762

Published: Jan. 1, 2022

Replacing fossil fuels with energy sources and carriers that are sustainable, environmentally benign, affordable is amongst the most pressing challenges for future socio-economic development.

Language: Английский

---

Electrochemical CO2 reduction (CO2RR) to multi-carbon products over copper-based catalysts

Coordination Chemistry Reviews, Journal Year: 2021, Volume and Issue: 454, P. 214340 - 214340

Published: Dec. 13, 2021

Language: Английский

---

Oxygen Evolution/Reduction Reaction Catalysts: From In Situ Monitoring and Reaction Mechanisms to Rational Design

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(9), P. 6257 - 6358

Published: March 21, 2023

The oxygen evolution reaction (OER) and reduction (ORR) are core steps of various energy conversion storage systems. However, their sluggish kinetics, i.e., the demanding multielectron transfer processes, still render OER/ORR catalysts less efficient for practical applications. Moreover, complexity catalyst–electrolyte interface makes a comprehensive understanding intrinsic mechanisms challenging. Fortunately, recent advances in situ/operando characterization techniques have facilitated kinetic monitoring under conditions. Here we provide selected highlights mechanistic studies with main emphasis placed on heterogeneous systems (primarily discussing first-row transition metals which operate basic conditions), followed by brief outlook molecular catalysts. Key sections this review focused determination true active species, identification sites, reactive intermediates. For in-depth insights into above factors, short overview metrics accurate characterizations is provided. A combination obtained time-resolved information reliable activity data will then guide rational design new Strategies such as optimizing restructuring process well overcoming adsorption-energy scaling relations be discussed. Finally, pending current challenges prospects toward development homogeneous presented.

Language: Английский

---

Electrochemical Water Splitting: Bridging the Gaps Between Fundamental Research and Industrial Applications

Energy & environment materials, Journal Year: 2022, Volume and Issue: 6(5)

Published: May 28, 2022

Electrochemical water splitting represents one of the most promising technologies to produce green hydrogen, which can help realize goal achieving carbon neutrality. While substantial efforts on a laboratory scale have been made for understanding fundamental catalysis and developing high‐performance electrocatalysts two half‐reactions involved in electrocatalysis, much less attention has paid doing relevant research larger scale. For example, few such researches done an industrial Herein, we review very recent endeavors bridge gaps between applications electrolysis. We begin by introducing fundamentals electrochemical then present comparisons testing protocol, figure merit, catalyst interest, manufacturing cost industry‐based water‐electrolysis research. Special is tracking surface reconstruction process identifying real catalytic species under different conditions, highlight significant distinctions corresponding mechanisms. Advances designs industry‐relevant electrolysis are also summarized, reveal progress moving practical forward accelerating synergies material science engineering. Perspectives challenges electrocatalyst design strategies proposed finally further lab‐scale large‐scale electrocatalysis applications.

Language: Английский

---

Ni2P/NiMoP heterostructure as a bifunctional electrocatalyst for energy-saving hydrogen production

eScience, Journal Year: 2021, Volume and Issue: 1(1), P. 69 - 74

Published: Sept. 21, 2021

Electrochemical water splitting is a sustainable and feasible strategy for hydrogen production but hampered by the sluggish anodic oxygen evolution reaction (OER). Herein, an effective approach introduced to significantly decrease cell voltage replacing OER with urea oxidation (UOR). A Ni2P/NiMoP nanosheet catalyst hierarchical architecture uniformly grown on nickel foam (NF) substrate through simple hydrothermal phosphorization method. The achieves impressive HER activity, low overpotential of only 22 mV at 10 mA cm–2 Tafel slope 34.5 dec–1. In addition, reduced from 1.49 V 1.33 after introduction 0.33 M urea. Notably, two-electrode electrolyzer employing as bifunctional exhibits current density 1.35 excellent long-term durability 80 h.

Language: Английский

---

Regulating electronic states of nitride/hydroxide to accelerate kinetics for oxygen evolution at large current density

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

Published: April 4, 2023

Rational design efficient transition metal-based electrocatalysts for oxygen evolution reaction (OER) is critical water splitting. However, industrial water-alkali electrolysis requires large current densities at low overpotentials, always limited by intrinsic activity. Herein, we report hierarchical bimetal nitride/hydroxide (NiMoN/NiFe LDH) array as model catalyst, regulating the electronic states and tracking relationship of structure-activity. As-activated NiMoN/NiFe LDH exhibits industrially required density 1000 mA cm-2 overpotential 266 mV with 250 h stability OER. Especially, in-situ electrochemical spectroscopic reveals that heterointerface facilitates dynamic structure to optimize structure. Operando impedance spectroscopy implies accelerated OER kinetics intermediate due fast charge transport. The mechanism revealed combination theoretical experimental studies, indicating as-activated follows lattice oxidation kinetics. This work paves an avenue develop catalysts via tuning states.

Language: Английский

---

Metal–Organic Frameworks for Electrocatalysis: Catalyst or Precatalyst?

ACS Energy Letters, Journal Year: 2021, Volume and Issue: 6(8), P. 2838 - 2843

Published: July 22, 2021

ADVERTISEMENT RETURN TO ISSUEPREVViewpointNEXTMetal–Organic Frameworks for Electrocatalysis: Catalyst or Precatalyst?Weiran ZhengWeiran ZhengDepartment of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, SAR, ChinaMore by Weiran Zhenghttps://orcid.org/0000-0002-9915-6982 Lawrence Yoon Suk Lee*Lawrence LeeDepartment ChinaResearch Institute Smart Energy, China*[email protected]More Leehttps://orcid.org/0000-0002-6119-4780Cite this: ACS Energy Lett. 2021, 6, 8, 2838–2843Publication Date (Web):July 22, 2021Publication History Received30 June 2021Accepted14 July 2021Published online22 inissue 13 August 2021https://pubs.acs.org/doi/10.1021/acsenergylett.1c01350https://doi.org/10.1021/acsenergylett.1c01350article-commentaryACS PublicationsCopyright © 2021 American Society. This publication is available under these Terms Use. Request reuse permissions free to access through this site. Learn MoreArticle Views17089Altmetric-Citations99LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated reflect usage leading up last few days.Citations number other articles citing article, calculated Crossref daily. Find more information about citation counts.The Altmetric Attention Score a quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail (3 MB) Get e-AlertscloseSUBJECTS:Electrocatalysis,Electrocatalysts,Metal organic frameworks,Metals,Stability e-Alerts

Language: Английский

---

Bifunctional Electrocatalysts for Overall and Hybrid Water Splitting

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(7), P. 3694 - 3812

Published: March 22, 2024

Electrocatalytic water splitting driven by renewable electricity has been recognized as a promising approach for green hydrogen production. Different from conventional strategies in developing electrocatalysts the two half-reactions of (e.g., and oxygen evolution reactions, HER OER) separately, there growing interest designing bifunctional electrocatalysts, which are able to catalyze both OER. In addition, considering high overpotentials required OER while limited value produced oxygen, is another rapidly exploring alternative oxidation reactions replace hybrid toward energy-efficient generation. This Review begins with an introduction on fundamental aspects splitting, followed thorough discussion various physicochemical characterization techniques that frequently employed probing active sites, emphasis reconstruction during redox electrolysis. The design, synthesis, performance diverse based noble metals, nonprecious metal-free nanocarbons, overall acidic alkaline electrolytes, thoroughly summarized compared. Next, their application also presented, wherein anodic include sacrificing agents oxidation, pollutants oxidative degradation, organics upgrading. Finally, concise statement current challenges future opportunities presented hope guiding endeavors quest sustainable

Language: Английский

---

Efficient FeCoNiCuPd thin-film electrocatalyst for alkaline oxygen and hydrogen evolution reactions

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 313, P. 121472 - 121472

Published: May 4, 2022

Language: Английский

---

Energy‐Saving Hydrogen Production by Seawater Electrolysis Coupling Sulfion Degradation

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(16)

Published: Feb. 12, 2022

Electrolysis of costless and infinite seawater is a promising way toward grid-scale hydrogen production without causing freshwater stress. Practical potential this technology, however, hindered by low energy efficiency anode corrosion the detrimental chlorine chemistry in addition to unaffordable electricity expense. Herein, energy-saving reported chlorine-free splitting coupling sulfion oxidation. It yields at cell voltage 0.97 V, cutting consumption 2.32 kWh per m3 H2 300 mA cm-2 . Compared alkaline water electrolysis, expense primarily saved 60% with 50% lower equivalent input. Benefiting from ultralow voltage, hazardous fully avoided regardless Cl- crossover. Meanwhile, it also allows fast degradation S2- pollutant body value-added sulfur 80% efficiency, for further reducing cost protection ecosystem. Connecting such hybrid electrolyzer commercial solar can harvest better sustainability. This work may offer new opportunities low-cost unlimited ocean resources environmental protection.

Language: Английский

---