The Pitfalls of Using Potentiodynamic Polarization Curves for Tafel Analysis in Electrocatalytic Water Splitting

ACS Energy Letters, Год журнала: 2021, Номер unknown, С. 1607 - 1611

Опубликована: Март 31, 2021

ADVERTISEMENT RETURN TO ISSUEPREVViewpointNEXTThe Pitfalls of Using Potentiodynamic Polarization Curves for Tafel Analysis in Electrocatalytic Water SplittingSengeni Anantharaj*Sengeni AnantharajDepartment Applied Chemistry, School Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, JapanWaseda Research Institute Japan*Email: [email protected] protected]More by Sengeni Anantharajhttp://orcid.org/0000-0002-3265-2455, Suguru Noda*Suguru NodaDepartment Nodahttp://orcid.org/0000-0002-7305-5307, Matthias DriessMatthias DriessDepartment Chemistry: Metalorganics Inorganic Materials, Technische Universität Berlin, Straße des 17 Juni 135, Sekr. C2, 10623 GermanyMore Driesshttp://orcid.org/0000-0002-9873-4103, Prashanth W. Menezes*Prashanth MenezesDepartment Germany*Email: Menezeshttp://orcid.org/0000-0002-0665-7690Cite this: ACS Energy Lett. 2021, 6, 4, 1607–1611Publication Date (Web):March 31, 2021Publication History Received22 March 2021Accepted24 2021Published online31 inissue 9 April 2021https://pubs.acs.org/doi/10.1021/acsenergylett.1c00608https://doi.org/10.1021/acsenergylett.1c00608article-commentaryACS PublicationsCopyright © 2021 American Chemical Society. This publication is available under these Terms Use. Request reuse permissions free to access through this site. Learn MoreArticle Views26897Altmetric-Citations281LEARN 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 (2 MB) Get e-AlertscloseSupporting Info (1)»Supporting Information Supporting SUBJECTS:Catalysis,Charge transfer,Diffusion,Electrical properties,Electrochemical analysis,Polarization,Radiology e-Alerts

Язык: Английский

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Descriptors for the Evaluation of Electrocatalytic Reactions: d‐Band Theory and Beyond

Advanced Functional Materials, Год журнала: 2021, Номер 32(4)

Опубликована: Окт. 13, 2021

Abstract Closing the carbon‐, hydrogen‐, and nitrogen cycle with renewable electricity holds promises for mitigation of facing environment energy crisis, along continuing prosperity human society. Descriptors bridge gap between physicochemical factors electrocatalysts their boosted activity serve as guiding principles during rational design electrocatalysts. The optimal adsorption strength key intermediates is potentially accessed under tendentious guidelines proposed by indicators, such d‐band center, Δ G H , E O* coordination number (CN), bond length, etc. Here, in this review, a comprehensive summary recent advances achieved regarding descriptors that aims recycling C/H/N‐containing chemicals offered. review initiated providing necessity development efficient then physics behind center introduced. Then progress relating to guidance reviewed. Following that, an extended discussion experimental or theoretical characterization beyond it provided. Finally, perspectives challenges area are

Язык: Английский

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Self‐Supported Electrocatalysts for Practical Water Electrolysis

Advanced Energy Materials, Год журнала: 2021, Номер 11(39)

Опубликована: Сен. 1, 2021

Abstract Over the years, significant advances have been made to boost efficiency of water splitting by carefully designing economic electrocatalysts with augmented conductivity, more accessible active sites, and high intrinsic activity in laboratory test conditions. However, it remains a challenge develop earth‐abundant catalysts that can satisfy demands practical electrolysis, is, outstanding all‐pH electrolyte capacity, direct seawater ability, exceptional performance for overall splitting, superior large‐current‐density activity, robust long‐term durability. In this context, considering features increased species loading, rapid charge, mass transfer, strong affinity between catalytic components substrates, easily‐controlled wettability, as well as, enhanced bifunctional performance, self‐supported are presently projected be most suitable contenders massive scale hydrogen generation. review, comprehensive introduction design fabrication an emphasis on deposited nanostructured catalysts, selection various methods provided. Thereafter, recent development promising applications is reviewed from aforementioned aspects. Finally, brief conclusion delivered challenges perspectives relating promotion sustainable large‐scale production discussed.

Язык: Английский

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

Energy & environment materials, Год журнала: 2022, Номер 6(5)

Опубликована: Май 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.

Язык: Английский

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Efficient Alkaline Water/Seawater Hydrogen Evolution by a Nanorod‐Nanoparticle‐Structured Ni‐MoN Catalyst with Fast Water‐Dissociation Kinetics

Advanced Materials, Год журнала: 2022, Номер 34(21)

Опубликована: Апрель 1, 2022

Achieving efficient and durable nonprecious hydrogen evolution reaction (HER) catalysts for scaling up alkaline water/seawater electrolysis is desirable but remains a significant challenge. Here, heterogeneous Ni-MoN catalyst consisting of Ni MoN nanoparticles on amorphous nanorods that can sustain large-current-density HER with outstanding performance demonstrated. The hierarchical nanorod-nanoparticle structure, along large surface area multidimensional boundaries/defects endows the abundant active sites. hydrophilic helps to achieve accelerated gas-release capabilities effective in preventing degradation during water electrolysis. Theoretical calculations further prove combination effectively modulates electron redistribution at their interface promotes sluggish water-dissociation kinetics Mo Consequently, this requires low overpotentials 61 136 mV drive current densities 100 1000 mA cm-2 , respectively, 1 m KOH stable operation 200 h constant density or 500 . This good also works well seawater electrolyte shows toward overall ultralow cell voltages.

Язык: Английский

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Recent advances in proton exchange membrane water electrolysis

Chemical Society Reviews, Год журнала: 2023, Номер 52(16), С. 5652 - 5683

Опубликована: Янв. 1, 2023

This review scrutinizes recent progress in PEMWE system including mechanisms, the correlation among structure-composition–performance, manufacturing, design and operation protocols. The challenges perspectives for applications are proposed.

Язык: Английский

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Electronic Modulation Caused by Interfacial Ni‐O‐M (M=Ru, Ir, Pd) Bonding for Accelerating Hydrogen Evolution Kinetics

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(41), С. 22276 - 22282

Опубликована: Авг. 24, 2021

Abstract Designing definite metal‐support interfacial bond is an effective strategy for optimizing the intrinsic activity of noble metals, but rather challenging. Herein, a series quantum‐sized metal nanoparticles (NPs) anchored on nickel metal–organic framework nanohybrids (M@Ni‐MOF, M=Ru, Ir, Pd) are rationally developed through spontaneous redox strategy. The metal‐oxygen bonds between NPs and Ni‐MOF guarantee structural stability sufficient exposure surface active sites. More importantly, such precise feature can effectively modulate electronic structure hybrids charge transfer formed Ni‐O‐M bridge then improves reaction kinetics. As result, representative Ru@Ni‐MOF exhibits excellent hydrogen evolution (HER) at all pH values, even superior to commercial Pt/C recent noble‐metal catalysts. Theoretical calculations deepen mechanism understanding HER performance optimized adsorption free energies water due interfacial‐bond‐induced electron redistribution.

Язык: Английский

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Transition metal-based catalysts for electrochemical water splitting at high current density: current status and perspectives

Nanoscale, Год журнала: 2021, Номер 13(30), С. 12788 - 12817

Опубликована: Янв. 1, 2021

Current popular transition metal-based electrocatalysts developed for HER/OER in water splitting at high current density are critically reviewed and discussed.

Язык: Английский

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Engineering the Local Microenvironment over Bi Nanosheets for Highly Selective Electrocatalytic Conversion of CO₂ to HCOOH in Strong Acid

ACS Catalysis, Год журнала: 2022, Номер 12(4), С. 2357 - 2364

Опубликована: Фев. 1, 2022

The extensive deployment of the electrocatalytic CO2 reduction reaction (CO2RR) is presently limited by utilization alkaline/neutral electrolytes in which carbonate formation severely reduces carbon efficiency and electrolysis stability. By contrast, CO2RR a strong acid electrolyte can overcome these shortcomings, yet hydrogen evolution (HER) greatly outcompetes acidic media. Herein, to HCOOH, significant chemical intermediate many industrial processes, was realized (pH ≤ 1) through introducing K+ cations into electrolyte. K+-assisted accordingly manufactured HCOOH with high Faradaic 92.2% @–1.23 VRHE commercially relevant current density −237.1 mA cm–2. More importantly, single-pass 27.4% for production demonstrated acid, exceeded value obtained alkaline CO2RR. Further mechanistic studies that engineer local microenvironment over Bi catalyst surface reducing proton coverage suppress competing HER creating interaction stabilize *OCOH intermediate, ultimately promotes high-efficiency conversion

Язык: Английский

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Design strategies for markedly enhancing energy efficiency in the electrocatalytic CO₂ reduction reaction

Energy & Environmental Science, Год журнала: 2022, Номер 15(9), С. 3603 - 3629

Опубликована: Янв. 1, 2022

The review summarizes the recent strategies to improve energy efficiency of CO 2 electroreduction, a guiding metric for industrial application and economic feasibility, with emphasis on designing remarkable catalyst advanced electrolysis system.

Язык: Английский

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