Regulating Surface Charge by Embedding Ru Nanoparticles over 2D Hydroxides toward Water Oxidation DOI
Arun Karmakar, Rahul Jayan, Ankit Das

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(22), P. 26928 - 26938

Published: May 27, 2023

Exploring highly active and earth-abundant electrocatalysts for the oxygen evolution reaction (OER) is considered one of prime prerequisites generating green hydrogen. Herein, a competent microwave-assisted decoration Ru nanoparticles (NPs) over bimetallic layered double hydroxide (LDH) material proposed. The same has been used as an OER catalyst in 1 M KOH solution. shows interesting NP loading dependency toward OER, concentration-dependent volcanic relationship between electronic charge thermoneutral current densities observed. This relation that with optimum concentration NPs, could effectively catalyze by obeying Sabatier principle ion adsorption. optimized Ru@CoFe-LDH(3%) demands overpotential value only 249 mV to drive density 10 mA/cm2 highest TOF 14.4 s-1 compared similar CoFe-LDH-based materials. In situ impedance experiments DFT studies demonstrated incorporating NPs boosts intrinsic activity CoFe-LDH on account sufficient activated redox reactivities both Co lattice CoFe-LDH. As result, pristine CoFe-LDH, at 1.55 V vs RHE normalized ECSA increased 86.58%. First-principles analysis possesses lower d-band center indicates weaker more optimal binding characteristics intermediates, improving overall performance. Overall, this report displays excellent correlation decorated LDH surface which can tune verified experimental theoretical calculations.

Language: Английский

Strategies and Perspectives to Catch the Missing Pieces in Energy‐Efficient Hydrogen Evolution Reaction in Alkaline Media DOI Creative Commons
Sengeni Anantharaj, Suguru Noda,

Vasanth Rajendiran Jothi

et al.

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(35), P. 18981 - 19006

Published: Jan. 10, 2021

Transition metal hydroxides (M-OH) and their heterostructures (X|M-OH, where X can be a metal, oxide, chalcogenide, phosphide, etc.) have recently emerged as highly active electrocatalysts for hydrogen evolution reaction (HER) of alkaline water electrolysis. Lattice hydroxide anions in are primarily responsible observing such an enhanced HER activity alkali that facilitate dissociation assist the first step, adsorption. Unfortunately, poor electronic conductivity had been issue concern significantly lowered its activity. Interesting advancements were made when heterostructured materials with metallic or semiconducting phase found to overcome this pitfall. However, midst evolving chalcogenide phosphide based catalysts, significant developments field catalysed superiority unfortunately given negligible attention. This review, unlike others, begins question why is difficult will take reader through evaluation perspectives, trends metals HER, understanding how works on different interfaces, what must research directions near future, eventually summarizes inevitable energy-efficient HER.

Language: Английский

Citations

398
The Significance of Properly Reporting Turnover Frequency in Electrocatalysis Research DOI
Sengeni Anantharaj, Pitchiah Esakki Karthik, Suguru Noda

et al.

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(43), P. 23051 - 23067

Published: Sept. 15, 2021

For decades, turnover frequency (TOF) has served as an accurate descriptor of the intrinsic activity a catalyst, including those in electrocatalytic reactions involving both fuel generation and consumption. Unfortunately, most recent reports this area, TOF is often not properly reported or at all, contrast to overpotentials benchmarking current density. The density significant determining apparent activity, but it affected by catalyst-centric parasitic reactions, electrolyte-centric competing capacitance. Luckily, calculated can precisely give free from these phenomena electrocatalysis. In Viewpoint we ask: 1) What makes commonly used markers unsuitable for determination? 2) How reflect activity? 3) Why still underused electrocatalysis? 4) methods are 5) essential more calculation TOF? Finally, significance normalizing Faradaic efficiency (FE) stressed our views on development universal analytical tools determine exact number active sites real surface area all kinds materials.

Language: Английский

Citations

310
Electrocatalysts for the hydrogen evolution reaction in alkaline and neutral media. A comparative review DOI Creative Commons
Martin Ďurovič, Jaromír Hnát, Karel Bouzek

et al.

Journal of Power Sources, Journal Year: 2021, Volume and Issue: 493, P. 229708 - 229708

Published: March 9, 2021

With interest in renewable energy sources and the decarbonisation of industry rapidly accelerating, alkaline water electrolysis can now be regarded as a key technology enabling efficient conversion storage. Since an environment is suitable for vast range materials with satisfactory chemical stability under operating conditions, topic catalysts route could give rise to confusion community. Hence, focus this review on analysing current situation electrocatalysis hydrogen evolution reaction neutral environment, presenting main group studied, discussing their potential achieve industrial relevance. It addresses limitations common parameters used evaluating comparing catalytic activity selected catalysts. Furthermore, provides comprehensive comparison catalyst activities respect individual groups depending composition well most cations cation-based materials. For sake clarity, also presented graphical form. Finally, based literature data, fundamental material characteristics evaluated development new electrochemical splitting are proposed.

Language: Английский

Citations

288
Electrocatalysts for the oxygen evolution reaction in alkaline and neutral media. A comparative review DOI Creative Commons

Michaela Plevová,

Jaromír Hnát, Karel Bouzek

et al.

Journal of Power Sources, Journal Year: 2021, Volume and Issue: 507, P. 230072 - 230072

Published: June 4, 2021

Hydrogen can be produced in a clean way from water by its electrochemical splitting. Water electrolysis consists of two half-reactions, which the oxygen evolution reaction (OER) is major source energy loss. In case alkaline electrolysis, spectrum materials that are stable under conditions OER significantly broader than an acidic route. This review compares systematically different classes based on reported overpotential at current density 10 mA cm−2. Plethora studies was gathered to accomplish this task and catalysts literature date summarized. addition, we have provided insight into catalyst activity descriptors allowing theoretical identification most active materials. order assist reader gaining better understanding complex subject, classified three main groups agreement with their chemical composition as transition metal oxides, phosphides selenides. Less frequently used separate group. Near-neutral or neutral pH considered well.

Language: Английский

Citations

170
Designing a smart heterojunction coupling of cobalt-iron layered double hydroxide on nickel selenide nanosheets for highly efficient overall water splitting kinetics DOI

Shrine Maria Nithya Jeghan,

Dongjoon Kim,

Yuhyeon Lee

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 308, P. 121221 - 121221

Published: Feb. 15, 2022

Language: Английский

Citations

141
Layered Double Hydroxide-Derived Nanomaterials for Efficient Electrocatalytic Water Splitting: Recent Progress and Future Perspective DOI
Arslan Hameed, Mariam Batool, Zhongyu Liu

et al.

ACS Energy Letters, Journal Year: 2022, Volume and Issue: 7(10), P. 3311 - 3328

Published: Sept. 8, 2022

Layered double hydroxides (LDHs) have attracted intense interest in recent research and hold promise a vast range of applications. Because the layered structure diverse compositions, transition-metal-based LDHs are projected to function as active electrocatalysts for oxygen evolution reaction (OER) hydrogen (HER). Delamination LDH hexagonal platelet crystals nanometer level leads enhanced activity. However, several limitations, including collapse poor conductivity LDHs, impede their application electrochemical catalysis. Consequently, LDH-derived nanomaterials being employed high-performance overall water splitting. In this Review, we highlight progress development materials, bimetal oxides hydroxides, bimetallic nitrides/phosphides, sulfides/selenides, MOFs, remarkable Focus is placed on methodologies catalytic efficiency splitting, key problems, future perspectives.

Language: Английский

Citations

131
A Review of Transition Metal Boride, Carbide, Pnictide, and Chalcogenide Water Oxidation Electrocatalysts DOI
Kenta Kawashima, Raúl A. Márquez, Lettie A. Smith

et al.

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(23), P. 12795 - 13208

Published: Nov. 15, 2023

Transition metal borides, carbides, pnictides, and chalcogenides (X-ides) have emerged as a class of materials for the oxygen evolution reaction (OER). Because their high earth abundance, electrical conductivity, OER performance, these electrocatalysts potential to enable practical application green energy conversion storage. Under potentials, X-ide demonstrate various degrees oxidation resistance due differences in chemical composition, crystal structure, morphology. Depending on oxidation, catalysts will fall into one three post-OER electrocatalyst categories: fully oxidized oxide/(oxy)hydroxide material, partially core@shell unoxidized material. In past ten years (from 2013 2022), over 890 peer-reviewed research papers focused electrocatalysts. Previous review provided limited conclusions omitted significance "catalytically active sites/species/phases" this review, comprehensive summary (i) experimental parameters (e.g., substrates, loading amounts, geometric overpotentials, Tafel slopes, etc.) (ii) electrochemical stability tests post-analyses publications from 2022 is provided. Both mono polyanion X-ides are discussed classified with respect material transformation during OER. Special analytical techniques employed study reconstruction also evaluated. Additionally, future challenges questions yet be answered each section. This aims provide researchers toolkit approach showcase necessary avenues investigation.

Language: Английский

Citations

125
Recent advances in Ni3S2-based electrocatalysts for oxygen evolution reaction DOI
Yao Zhao, Junhua You, Lu Wang

et al.

International Journal of Hydrogen Energy, Journal Year: 2021, Volume and Issue: 46(79), P. 39146 - 39182

Published: Oct. 19, 2021

Language: Английский

Citations

114
Engineering multiphasic MoSe2/NiSe heterostructure interfaces for superior hydrogen production electrocatalysis DOI

Jiangyan Xue,

Feilong Li, Bingbing Chen

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 312, P. 121434 - 121434

Published: April 20, 2022

Language: Английский

Citations

97
Stabilization of ruthenium nanoparticles over NiV-LDH surface for enhanced electrochemical water splitting: an oxygen vacancy approach DOI
Arun Karmakar, Kannimuthu Karthick, Selvasundarasekar Sam Sankar

et al.

Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 10(7), P. 3618 - 3632

Published: Jan. 1, 2022

Oxygen vacancy assisted stabilization of Ru@NiV-LDH was achieved via wet chemical methods. showed an excellent water splitting activity. DFT analysis confirmed the Ru NPs over LDH surface by 3.8 ± 0.5 eV adsorption energy.

Language: Английский

Citations

88