Nanoscale, Journal Year: 2024, Volume and Issue: unknown
Published: Jan. 1, 2024
The oxyhydroxides (MOOH) for oxygen evolution reaction (OER) in recent years is reviewed. control mechanism of improving OER catalytic performance MOOH discussed. Finally, the challenges and future developments are analyzed.
Language: Английский
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(21)
Published: Jan. 29, 2024
Abstract Ti, V, Cr, Mn, Co, and Cu, have been investigated as a third dopant in NiFe sulfide for enhanced oxygen evolution reaction (OER)/oxygen reduction (ORR). The effects of on surface electronic structure, conductivity, thermodynamic barrier are addressed discussed. For the OER, X‐ray photoelectron spectroscopy analysis shows that electron transferring from Ni to dopants enhances catalytic performance sulfide. Cu doped exhibits best OER performance. ORR, density functional theory calculation indicates upshift d‐band center (ɛ d ), while Cr downshifts ɛ . Among dopants, V leads optimized structure modification, giving adsorption energy *O Ni, lowest rate determining step ΔG 1 , ORR activity. By considering E 10 ‐E 1/2 together with maximum current limited diffusion NiFeVS OER/ORR bifunctionality. cathodic catalyst has also evaluated zinc air battery, demonstrating specific capacity 698 mAh g −1 power 190 mW cm −2 superior cycle stability 2400 cycles (400 h).
Language: Английский
Citations
52
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(28)
Published: March 15, 2024
Abstract Surface reconstruction that produces real active species for catalytic reactions generally occurs during electrocatalytic water splitting, but overcoming the level‐mass activity‐stability trade‐off is a grand challenge. A cation‐doping in conjunction with geometrical topology strategy proposed to concurrently realize deep and self‐optimization of FeNi phosphide nanoarrays an electrochemical activation process. The doped Zn cation induces FeNiP@Fe 2 P precatalyst by continuously dissolving Fe re‐depositing as amorphous FeOOH solders Ni nanoparticles, forming small ultra‐thin nanosheets abundant amorphous‐crystalline interfaces structural stability. Moreover, multichannel exhibits unusual ability optimize their morphology via finally evolving into multi‐microchannel tubular comprising interconnected‐nanosheets very loose structure enhanced electrolyte permeability, mass transfer, accessibility sites. reconstructed Zn‐Ni P/FeOOH superstructure catalysts reach 10 mA cm −2 current density at ultra‐low overpotential 11 mV hydrogen evolution (HER). Impressively, when assembled two‐electrode cell Zn‐FeNiP@Zn‐Fe anode cathode, it delivers densities record low voltage 1.40 V. This provides novel avenue promote achieving high performance.
Language: Английский
Citations
46
Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 659, P. 821 - 832
Published: Jan. 10, 2024
Language: Английский
Citations
26
Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 509, P. 215777 - 215777
Published: March 26, 2024
Language: Английский
Citations
23
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(26)
Published: Feb. 8, 2024
Abstract The electrocatalytic oxidation of 5‐hydroxymethylfurfural (HMF) provides a feasible way for utilization biomass resources. However, how to regulate the selective synthesis multiple value‐added products is still great challenge. cobalt‐based compound promising catalyst due its direct and indirect properties, but weak adsorption capacity restricts further development. Herein, by constructing Ag─Co(OH) 2 heterogeneous catalyst, efficient 5‐hydroxymethyl‐2‐furanoic acid (HMFCA) 2,5‐furan dicarboxylic (FDCA) at different potential ranges are realized. Based on various physical characterizations, electrochemical measurements, density functional theory calculations, it proved that addition Ag can effectively promote aldehyde group carboxyl group, then generate HMFCA low potential. Moreover, introduction activate compounds, thus strengthening organic molecules OH − species, promoting formation FDCA. This work achieves two chemicals one tandem deeply analyzes enhancement mechanism which powerful guidance development catalysts.
Language: Английский
Citations
20
Small, Journal Year: 2023, Volume and Issue: 19(50)
Published: Aug. 25, 2023
Abstract Active and stable electrocatalysts toward oxygen evolution reaction (OER) are essential for alkaline water splitting. Herein, an efficient durable high‐valence NiFe‐based OER electrocatalyst is developed, featuring a protective CeO 2− x coating to prevent the corrosion of carbon substrates during oxidative operation, ensuring excellent catalyst stability. The incorporation also leads formation Ce‐doped NiFe sulfide catalyst. Ce modulator enables dynamic transformation into highly active (oxy)hydroxide species with Ni sites enhanced Ni─O covalency, thereby improving its catalytic activity. Accordingly, prepared NiFeS 2 /CeO /CC achieves activity overpotential 260 mV at 100 mA cm −2 in 1.0 m KOH. Moreover, current density 187 hydrogen reaction. anion exchange membrane electrolyzer reached 500 1.73 V cell voltage stability h continuous operation. This study demonstrates promising approach fabrication robust water‐splitting electrocatalysts.
Language: Английский
Citations
30
Small, Journal Year: 2024, Volume and Issue: 20(26)
Published: Jan. 14, 2024
Abstract Featured with the attractive properties such as large surface area, unique atomic layer thickness, excellent electronic conductivity, and superior catalytic activity, layered metal chalcogenides (LMCs) have received considerable research attention in electrocatalytic applications. In this review, approaches developed to synthesize LMCs‐based electrocatalysts are summarized. Recent progress composites for electrochemical energy conversion applications including oxygen reduction reaction, carbon dioxide evolution hydrogen overall water splitting, nitrogen reaction is reviewed, potential opportunities practical obstacles development of high‐performing active substances also discussed. This review may provide an inspiring guidance developing high‐performance LMCs
Language: Английский
Citations
14
Journal of Catalysis, Journal Year: 2024, Volume and Issue: 430, P. 115354 - 115354
Published: Feb. 1, 2024
Language: Английский
Citations
11
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 23, 2025
Abstract Oxygen evolution reaction (OER) plays a critical role in water splitting, which can directly determine the energy consumption of hydrogen production. However, poor stability catalysts at large current density inhibits their industrial application. Therefore, development efficient with industry‐relevant activities still faces great challenges. Herein, one‐step corrosion strategy is reported for preparation multi‐element low‐crystal transition metal hydroxide (denoted as NiFeCrMnCo‐c). Density functional theory calculation indicates that doping improves conductivity catalyst and reduces barrier catalytic process. Only 259 303 mV overpotentials are required to achieve anodic densities 100 1000 mA cm −2 respectively, it work 50 300 h without apparent attenuation. Furthermore, when self‐assembled an anion exchange membrane electrolyzer, requires only 1.72 V splitting operates stably 60 °C, meet requirements The design OER simple preparation, high activity, provides new perspective practical splitting.
Language: Английский
Citations
1
Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 114, P. 115822 - 115822
Published: Feb. 14, 2025
Language: Английский
Citations
1