Electrostatic Field Modification Enhances the Electrocatalytic Oxygen Evolution Reaction Stability of CoFe2O4 Catalysts DOI Creative Commons

Liwen Liang,

Jiatong Miao,

Xiyuan Feng

et al.

Micromachines, Journal Year: 2025, Volume and Issue: 16(5), P. 491 - 491

Published: April 22, 2025

Enhancing the stability of oxygen evolution reaction (OER) catalysts is a critical challenge for realizing efficient water splitting. In this work, we introduce an innovative approach by applying electric field during annealing CoFe2O4/C catalyst. By controlling strength (100 mV) and treatment duration (1 h), achieved dual optimization catalyst’s microstructure electronic environment, resulting in significant improvement catalytic stability. The experimental results demonstrate that field-treated catalyst exhibits reduced overpotential decay (only 0.8 enhanced (retaining 89.1% its initial activity after 24 h) extended OER testing. This performance significantly surpasses untreated sample, which showed 1.5 mV retained only 72.5% h. X-ray photoelectron spectroscopy (XPS) analysis confirmed promoted formation vacancies, substantially improved electron transfer efficiency, optimized local environment Co2+/Co3+ Fe2+/Fe3+, leading to decrease charge resistance (Rct) from 58.2 Ω 42.9 Ω. study not presents novel strategy modulating via fields but also broadens design concepts materials establishing structure–activity relationship between strength, microstructure, performance, ultimately providing theoretical foundation guidance development highly stable splitting catalysts.

Language: Английский

Spin effects in electrocatalysis: Mechanisms, catalyst engineering, modulation, and applications DOI

Sichen Huo,

Xinyu Wang, Yanjie Chen

et al.

Materials Science and Engineering R Reports, Journal Year: 2025, Volume and Issue: 164, P. 100967 - 100967

Published: March 5, 2025

Language: Английский

Citations

1
Advancements in Electrocatalysts for Oxygen Evolution Reaction: A Review of Catalysts in Acidic Media DOI Creative Commons

G.-F. Su,

Jiayi Yang,

Jie Yin

et al.

ChemElectroChem, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Abstract Facing the increasingly severe challenges of energy and environment, green hydrogen production technology has attracted widespread attention. The efficient catalysis acidic oxygen evolution reaction (OER) always been a technological bottleneck that needs to be overcome. This article reviews latest research progress in this field recent years. Firstly, analyzes two classic OER mechanisms, adsorbate mechanism (AEM) lattice (LOM), finds latter may have lower barrier but is less stable. provides theoretical basis for designing catalysts with both high activity stability. Subsequently, advancements noble, non‐noble metals, carbides catalysts, highlighting optimizing composition electronic structures crucial enhancing catalytic performance. also illustrates implementation pathways these strategies specific examples. These innovative designs not only significantly enhance performance greatly improve stability, injecting new momentum into commercial application production. In summary, comprehensively discusses from exploration case analysis, will undoubtedly provide an important reference further breakthroughs field.

Language: Английский

Citations

0
Ir/Mn Co‐Mixing and Oxide‐Support Interaction Modulation Through Plasma Promoted Asymmetric Oxygen Coupling for Stable Acidic Oxygen Evolution DOI Open Access
Kefeng Zhou, Yongjie Wang, Zhongqing Jiang

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 23, 2025

Abstract Developing efficient and stable catalysts that facilitate the oxygen‐evolution reaction (OER) through an oxide‐path mechanism (OPM) is of considerable interest. However, it remains a significant challenge due to stringent structural requirements these catalysts. This work reports using strategy integrates Ir/Mn co‐mixing strong oxide‐support interaction (SOSI) modulation, Ir‐based follow OPM for acidic OER can be developed. The mainly relies on optimizing distance oxygeneous intermediate adsorption sites by modulating SOSI plasma defect engineering trigger pathway with lower energy barrier. density‐functional‐theory (DFT) calculations reveal electronic coupling between Ir Mn via Ir─O─Mn bond ready adsorbed site those site, leading asymmetric oxygen OER. developed catalyst merely requires overpotential 240 mV drive 10 mA cm −2 mass‐activity > 75 times higher than IrO 2 . When used in proton‐exchange‐membrane water‐electrolyzers, shows high performance excellent stability at industrial‐level current density 1.0 A

Language: Английский

Citations

0
Toward the rational engineering of Mo-based materials for alkaline oxygen evolution reaction DOI

Qingcui Liu,

Wenhua Cheng,

Yudai Huang

et al.

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 1, 2025

Language: Английский

Citations

0
Cooperative Cobalt-Doped and Carboxylate Anions Modification of NiFe-Layered Double Hydroxides for Improving Oxygen Evolution Reaction DOI
Yitong Liu,

Kaikai Ba,

Peiru Li

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: April 4, 2025

The disparity of the fast electron-slow proton process significantly hinders catalytic efficiency oxygen evolution reaction (OER) in water splitting, so it is necessary to develop efficient and stable materials mitigate elevated overpotentials. In this study, a one-step hydrothermal approach was utilized synthesize cobalt-doped, carboxylic-acid-modified NiFe-layered double hydroxide (CoNiFe-LDH/NF) catalyst with enhanced intrinsic activity. Introducing Co promotes generation active components, carboxylate anions accelerate transfer, synergistic interaction which endows CoNiFe-LDH/NF superior OER performance. Experimental results show that has an overpotential as low 230 mV at 100 mA cm-2, Tafel slope 38.5 dec-1, excellent stability for 120 h current density 10 cm-2. Furthermore, mechanistic exploration by molecular probe detection pH-dependent experiment showed modified closer lattice oxidation mechanism (LOM). This study provides effective strategy improve performance layered materials.

Language: Английский

Citations

0
Bimetallic Mn and Cr co-doped nickel cobalt phosphide nanoneedle arrays as bifunctional electro catalysts for overall water splitting DOI

Y.H. Zhang,

M. L. Zhang,

Haochen Zhang

et al.

Fuel, Journal Year: 2025, Volume and Issue: 396, P. 135348 - 135348

Published: April 11, 2025

Language: Английский

Citations

0
Electrostatic Field Modification Enhances the Electrocatalytic Oxygen Evolution Reaction Stability of CoFe2O4 Catalysts DOI Creative Commons

Liwen Liang,

Jiatong Miao,

Xiyuan Feng

et al.

Micromachines, Journal Year: 2025, Volume and Issue: 16(5), P. 491 - 491

Published: April 22, 2025

Enhancing the stability of oxygen evolution reaction (OER) catalysts is a critical challenge for realizing efficient water splitting. In this work, we introduce an innovative approach by applying electric field during annealing CoFe2O4/C catalyst. By controlling strength (100 mV) and treatment duration (1 h), achieved dual optimization catalyst’s microstructure electronic environment, resulting in significant improvement catalytic stability. The experimental results demonstrate that field-treated catalyst exhibits reduced overpotential decay (only 0.8 enhanced (retaining 89.1% its initial activity after 24 h) extended OER testing. This performance significantly surpasses untreated sample, which showed 1.5 mV retained only 72.5% h. X-ray photoelectron spectroscopy (XPS) analysis confirmed promoted formation vacancies, substantially improved electron transfer efficiency, optimized local environment Co2+/Co3+ Fe2+/Fe3+, leading to decrease charge resistance (Rct) from 58.2 Ω 42.9 Ω. study not presents novel strategy modulating via fields but also broadens design concepts materials establishing structure–activity relationship between strength, microstructure, performance, ultimately providing theoretical foundation guidance development highly stable splitting catalysts.

Language: Английский

Citations

0