Manipulating d‐Band Center of Ru Sites in Branched RuO2 Nanofibers Enables Significantly Enhanced Alkaline Overall Water Splitting Performance DOI
Linfeng Zhang,

Weimo Li,

Siyu Ren

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 9, 2024

Abstract Although ruthenium dioxide (RuO 2 ) is an efficacious oxygen evolution reaction (OER) catalyst in acidic media, its performance alkaline conditions subpar and it also ineffective for hydrogen (HER) common electrolytes. Here, effective phosphorus (P)‐doping strategy introduced to manipulate the d ‐band center of (Ru) sites, attenuating adsorption energy HER intermediates lowering barrier OER, thereby significantly accelerating both OER performance. The representative 10%P‐RuO nanofibers (NFs) presents ultralow overpotential 177.9 mV at 1 A cm −2 long‐term stability 300 h m KOH toward HER, greatly exceeding those benchmark platinum (Pt)/C catalyst. Moreover, NFs exhibits exceptional with a low 250 10 mA (η desirable 150 , which far better than commercial RuO many other typical previously reported catalysts. Additionally, overall water electrolytic cell using as anode cathode necessitates working voltage 1.52 V demonstrates over 100 outperforming electrolysis cells.

Language: Английский

Comprehensive review on high entropy alloy-based coating DOI
Santosh Kumar

Surface and Coatings Technology, Journal Year: 2023, Volume and Issue: 477, P. 130327 - 130327

Published: Dec. 28, 2023

Language: Английский

Citations

79

Rare-Earth-Modified NiS2 Improves OH Coverage for an Industrial Alkaline Water Electrolyzer DOI
Wei Shen, Yao Zheng, Yang Hu

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(8), P. 5324 - 5332

Published: Feb. 14, 2024

The low coverage rate of anode OH adsorption under high current density conditions has become an important factor restricting the development industrial alkaline water electrolyzer (AWE). Here, we present our rare earth modification promotion strategy on using oxygen-friendly interface to increase NiS2 surface for efficient AWE catalysis. Density functional theory calculations predict that earths can enhance OH, and synthesis reaction mechanism is discussed in process spectrum. Experimentally, by preparing a series rare-earth-modified NiS2, relationship between coverage, active site density, catalytic activity was established attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, time-resolved absorption spectra, so on. unique oxygenophilic properties thereby increasing sites Furthermore, Eu2O3/NiS2 assembled into equipment operated stably over 240 h at 300 mA cm–2 80 °C 30% KOH. Rare-earth-modified exhibits better than traditional non-noble metal catalysts Ni(OH)2 providing new approach solve problem anode.

Language: Английский

Citations

49

Oxygenate-induced structural evolution of high-entropy electrocatalysts for multifunctional alcohol electrooxidation integrated with hydrogen production DOI Creative Commons
Jinfeng He, Yun Tong,

Zhe Wang

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(30)

Published: July 16, 2024

High-entropy compounds have been emerging as promising candidates for electrolysis, yet their controllable electrosynthesis strategy remains a formidable challenge because of the ambiguous ionic interaction and codeposition mechanism. Herein, we report oxygenates directionally induced electrodeposition to construct high-entropy materials with amorphous features, on which structural evolution from phosphide oxide is confirmed by introducing vanadate, thus realizing simultaneous optimization composition structure. The representative P-CoNiMnWVO x shows excellent bifunctional catalytic performance toward alkaline hydrogen reaction ethanol oxidation (EOR), small potentials −168 mV 1.38 V at 100 mA cm −2 , respectively. In situ spectroscopy illustrates that electrochemical reconstruction induces abundant Co–O species main active EOR follows conversion pathway C 2 product. Theoretical calculations reveal optimized electronic structure adsorption free energy intermediates thereby resulting in facilitated kinetic process. A membrane-free electrolyzer delivers both high Faradaic efficiencies acetate H over 95% superior stability at100 during 120 h electrolysis. addition, unique advantages endow multifunctional activity realize multipathway formate-coupled production.

Language: Английский

Citations

44

Unlocking Efficient Hydrogen Production: Nucleophilic Oxidation Reactions Coupled with Water Splitting DOI Creative Commons
Peng Wang, Jie Zheng,

Xu Xue

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

Abstract Electrocatalytic water splitting driven by sustainable energy is a clean and promising water‐chemical fuel conversion technology for the production of high‐purity green hydrogen. However, sluggish kinetics anodic oxygen evolution reaction (OER) pose challenges large‐scale hydrogen production, limiting its efficiency safety. Recently, OER has been replaced nucleophilic oxidation (NOR) with biomass as substrate coupled (HER), which attracted great interest. Anode NOR offers faster kinetics, generates high‐value products, reduces consumption. By coupling reaction, can be enhanced while yielding products or degrading pollutants. Therefore, NOR‐coupled HER another new electrolytic strategy after significance realizing development global decarbonization. This review explores potential reactions an alternative to delves into mechanisms, guiding future research in production. It assesses different methods, analyzing pathways catalyst effects. Furthermore, it evaluates role electrolyzers industrialized discusses prospects challenges. comprehensive aims advance efficient economical

Language: Английский

Citations

40

Water‐Stable High‐Entropy Metal‐Organic Framework Nanosheets for Photocatalytic Hydrogen Production DOI
Shengliang Qi,

Kaixin Zhu,

Ting Xu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(26)

Published: April 8, 2024

Abstract Metal‐organic frameworks (MOFs) have emerged as promising platforms for photocatalytic hydrogen evolution reaction (HER) due to their fascinating physiochemical properties. Rationally engineering the compositions and structures of MOFs can provide abundant opportunities optimization. In recent years, high‐entropy materials (HEMs) demonstrated great potential in energy environment fields. However, there is still no report on development (HE‐MOFs) HER aqueous solution. Herein, authors synthesis a novel p ‐type HE‐MOFs single crystal (HE‐MOF‐SC) corresponding nanosheets (HE‐MOF‐NS) capable realizing visible‐light‐driven HER. Both HE‐MOF‐SC HE‐MOF‐NS exhibit higher activity than all single‐metal MOFs, which are supposed be ascribed interplay between different metal nodes that enables more efficient charge transfer. Moreover, impressively, demonstrates much its thin thickness enhanced surface area. At optimum conditions, rate H 2 ≈13.24 mmol h −1 g , among highest values reported water‐stable MOF photocatalysts. This work highlights importance developing advanced toward photocatalysis.

Language: Английский

Citations

35

Dual Doping of B and Fe Activated Lattice Oxygen Participation for Enhanced Oxygen Evolution Reaction Activity in Alkaline Freshwater and Seawater DOI

Yajuan Pan,

Zhichong Wang, Kaixuan Wang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(37)

Published: May 6, 2024

Abstract The exploitation of highly activity oxygen evolution reaction (OER) electrocatalysts is critical for the application electrocatalytic water splitting. Triggering lattice mechanism (LOM) expected to provide a promising pathway overcome sluggish OER kinetics, however, effectively enhancing involvement remains challenging. In this study, fabrication B, Fe co‐doped CoP (B, Fe─CoP) nanofibers reported, which serve as efficient electrocatalyst through phosphorization and boronation treatment Fe‐doped Co 3 O 4 nanofibers. Experimental results combined with theoretical calculations reveal that simultaneous incorporation both B can more trigger participation in CoFe oxyhydroxides reconstructed from Fe─CoP compared incorporating only or Fe. Therefore, optimized exhibit superb low overpotentials 361 376 mV at 1000 mA cm −2 alkaline freshwater natural seawater, respectively. present work provides significant guidelines innovative design concepts development following LOM pathway.

Language: Английский

Citations

35

Hydrogen oxidation electrocatalysts for anion-exchange membrane fuel cells: activity descriptors, stability regulation, and perspectives DOI
Jin‐Tao Ren, Lei Chen, Haoyu Wang

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(12), P. 3960 - 4009

Published: Jan. 1, 2024

The general principles in terms of reactivity and stability to design efficient electrocatalysts for the alkaline hydrogen oxidation reaction are reviewed. performance catalysts anion-exchange membrane fuel cells is further discussed.

Language: Английский

Citations

29

Unlocking the Potential of High Entropy Alloys in Electrochemical Water Splitting: A Review DOI
Abrar Ahmad,

Adeela Nairan,

Zhuo Feng

et al.

Small, Journal Year: 2024, Volume and Issue: 20(29)

Published: Feb. 23, 2024

The global pursuit of sustainable energy is focused on producing hydrogen through electrocatalysis driven by renewable energy. Recently, High entropy alloys (HEAs) have taken the spotlight in electrolysis due to their intriguing cocktail effect, broad design space, customizable electronic structure, and stabilization effect. tunability complexity HEAs allow a diverse range active sites, optimizing adsorption strength activity for electrochemical water splitting. This review comprehensively covers contemporary advancements synthesis technique, framework, physio-chemical evaluation approaches HEA-based electrocatalysts. Additionally, it explores principles strategies aimed at catalytic activity, stability, effectiveness evolution reaction (HER), oxygen (OER), overall Through an in-depth investigation these aspects, inherent constituent element interactions, processes, sites associated with unravel. Eventually, outlook regarding challenges impending difficulties outline future direction HEA provided. thorough knowledge offered this will assist formulating designing catalysts based next generation electrochemistry-related applications.

Language: Английский

Citations

28

Multifunctional high-entropy materials DOI
Liuliu Han,

Shuya Zhu,

Ziyuan Rao

et al.

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 30, 2024

Language: Английский

Citations

27

Emerging high-entropy compounds for electrochemical energy storage and conversion DOI
Da Liu,

Peifang Guo,

Hongge Pan

et al.

Progress in Materials Science, Journal Year: 2024, Volume and Issue: 145, P. 101300 - 101300

Published: April 18, 2024

Language: Английский

Citations

25