Cobalt and Cerium Dual-Doped Nickel Sulfide Nanostructures as a Bifunctional Catalyst for Overall Water Splitting DOI
Yu Zhou,

Shengnan Song,

Yuwei Dong

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 31, 2024

Developing efficient and cost-effective electrocatalysts for both the hydrogen evolution reaction (HER) oxygen (OER) is a pivotal challenge in harnessing energy. Among promising candidates, transition metal sulfides have garnered significant research attention due to their low cost exceptional catalytic capabilities. In this work, we present strategy fabricate Co Ce dual-doping Ni3S2 nanosheets situ on nickel foam (CoCe-Ni3S2/NF) as an robust catalyst overall water splitting. The introduction of dopants can induce internal electronic interaction exposing more active sites accelerating faster electron transfer. Meanwhile, unique ultrathin two-dimensional (2D) nanosheet array nanostructure, with thickness 10 nm, facilitates enhanced electrolyte infiltration establishes pathways release H2 O2 bubbles. Density functional theory (DFT) reveals that effectively optimize d-band center improve absorption energy intermediates. synergy derived from these design features enables CoCe-Ni3S2/NF exhibit remarkable performance OER HER, well 1.0 M KOH electrolyte, achieves impressive overpotentials 285 193 mV at 50 mA cm–2 respectively. Notably, during water-splitting tests, potential 1.68 V achieved 20 cm–2, accompanied by outstanding durability 100 h. These results underscore splitting, paving way advancements sustainable technologies.

Language: Английский

Heterostructured electrocatalysts for the oxygen evolution reaction DOI

Shao-Lan Zheng,

Huimin Xu, Hongrui Zhu

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(30), P. 18832 - 18865

Published: Jan. 1, 2024

This review focuses mainly on the overall facilitating effect of heterostructures OER process. The fabrication heterostructured electrocatalysts and relationship between their structures electrocatalytic properties are discussed.

Language: Английский

Citations

27
Iron‐Induced Localized Oxide Path Mechanism Enables Efficient and Stable Water Oxidation DOI

Bohan Yao,

Yu‐Ting Chen, Yueying Yan

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract The sluggish reaction kinetics of the anodic oxygen evolution (OER) and inadequate catalytic performance non‐noble metal‐based electrocatalysts represent substantial barriers to development anion exchange membrane water electrolyzer (AEMWE). This study performed synthesis a three‐dimensional (3D) nanoflower‐like electrocatalyst (CFMO) via simple one‐step method. substitution Co with Fe in structure induces localized oxide path mechanism (LOPM), facilitating direct O−O radical coupling for enhanced O 2 evolution. optimized CFMO‐2 demonstrates superior OER performance, achieving an overpotential 217 mV at 10 mA cm −2 , alongside exceptional long‐term stability minimal degradation after 1000 h operation 1.0 M KOH. These properties surpass most conventional noble electrocatalysts. Furthermore, assembled AEMWE system, utilizing CFMO‐2, operates cell voltage 1.65 V deliver A . In situ characterizations reveal that, addition traditional adsorbate (AEM) isolated sites, new LOPM occurred around bimetallic sites. First‐principles calculations confirm greatly reduced energy barriers. work highlights potential improving design AEMWE.

Language: Английский

Citations

15
Nanostructured Fe-Doped Ni3S2 Electrocatalyst for the Oxygen Evolution Reaction with High Stability at an Industrially-Relevant Current Density DOI Creative Commons
Jiahui Zhu, Wei Chen, Stefano Poli

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(43), P. 58520 - 58535

Published: Oct. 15, 2024

A novel oxygen evolution reaction (OER) electrocatalyst was prepared by a synthesis strategy consisting of the solvothermal growth Ni3S2 nanostructures on Ni foam, followed hydrothermal incorporation Fe species (Fe–Ni3S2/Ni foam). This displayed low OER overpotential 230 mV at 100 mA·cm–2, Tafel slope 43 mV·dec–1, and constant performance an industrially relevant current density (500 mA·cm–2) over h in 1.0 M KOH electrolyte, despite minor loss process. Based detailed characterization (in situ) Raman spectroscopy, (quasi-in XPS, SEM, TEM, XRD, ICP-AES, EIS, Cdl analysis, high activity stability Fe–Ni3S2/Ni foam were attributed to nanostructuring surface form stable nanosheets combination granting suitable electrical conductivity with newly formed NiFe-based (oxy)hydroxides material providing active sites for OER.

Language: Английский

Citations

7
Fe, Mo co-doping enhances the OER performance of nickel sulfide nanoflakes for seawater electrolysis DOI

Yu Tao,

Zhikun Xu,

Rui Yan

et al.

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1010, P. 177480 - 177480

Published: Nov. 10, 2024

Language: Английский

Citations

6
Hierarchical Fe-based electrocatalyst for lattice oxygen mediated water oxidation with Industrial-Level activity DOI
Rui Yang, Hao Fu, Zimin Han

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0
Iron-decorated nickel selenide nanostructures with enhanced electrocatalytic activity for the oxygen evolution reaction DOI Creative Commons
Jiahui Zhu, Tao Jiang, D Gerlach

et al.

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 143, P. 235 - 249

Published: June 5, 2025

Language: Английский

Citations

0
Exchange energy pathway for water oxidation via multi-element synergy in electrocatalysts DOI Creative Commons
Jayaraman Theerthagiri,

Kasiviswanathan Muthusamy,

Myong Yong Choi

et al.

Chem Catalysis, Journal Year: 2024, Volume and Issue: 4(5), P. 100986 - 100986

Published: May 1, 2024

Language: Английский

Citations

0
Iron‐Induced Localized Oxide Path Mechanism Enables Efficient and Stable Water Oxidation DOI

Bohan Yao,

Yuting Chen, Yueying Yan

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract The sluggish reaction kinetics of the anodic oxygen evolution (OER) and inadequate catalytic performance non‐noble metal‐based electrocatalysts represent substantial barriers to development anion exchange membrane water electrolyzer (AEMWE). This study performed synthesis a three‐dimensional (3D) nanoflower‐like electrocatalyst (CFMO) via simple one‐step method. substitution Co with Fe in structure induces localized oxide path mechanism (LOPM), facilitating direct O−O radical coupling for enhanced O 2 evolution. optimized CFMO‐2 demonstrates superior OER performance, achieving an overpotential 217 mV at 10 mA cm −2 , alongside exceptional long‐term stability minimal degradation after 1000 h operation 1.0 M KOH. These properties surpass most conventional noble electrocatalysts. Furthermore, assembled AEMWE system, utilizing CFMO‐2, operates cell voltage 1.65 V deliver A . In situ characterizations reveal that, addition traditional adsorbate (AEM) isolated sites, new LOPM occurred around bimetallic sites. First‐principles calculations confirm greatly reduced energy barriers. work highlights potential improving design AEMWE.

Language: Английский

Citations

0
Electrocatalyst Design for Oxygen Evolution Reaction DOI
Zafar Khan Ghouri

SpringerBriefs in energy, Journal Year: 2024, Volume and Issue: unknown, P. 41 - 56

Published: Jan. 1, 2024

Language: Английский

Citations

0
Cobalt and Cerium Dual-Doped Nickel Sulfide Nanostructures as a Bifunctional Catalyst for Overall Water Splitting DOI
Yu Zhou,

Shengnan Song,

Yuwei Dong

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 31, 2024

Developing efficient and cost-effective electrocatalysts for both the hydrogen evolution reaction (HER) oxygen (OER) is a pivotal challenge in harnessing energy. Among promising candidates, transition metal sulfides have garnered significant research attention due to their low cost exceptional catalytic capabilities. In this work, we present strategy fabricate Co Ce dual-doping Ni3S2 nanosheets situ on nickel foam (CoCe-Ni3S2/NF) as an robust catalyst overall water splitting. The introduction of dopants can induce internal electronic interaction exposing more active sites accelerating faster electron transfer. Meanwhile, unique ultrathin two-dimensional (2D) nanosheet array nanostructure, with thickness 10 nm, facilitates enhanced electrolyte infiltration establishes pathways release H2 O2 bubbles. Density functional theory (DFT) reveals that effectively optimize d-band center improve absorption energy intermediates. synergy derived from these design features enables CoCe-Ni3S2/NF exhibit remarkable performance OER HER, well 1.0 M KOH electrolyte, achieves impressive overpotentials 285 193 mV at 50 mA cm–2 respectively. Notably, during water-splitting tests, potential 1.68 V achieved 20 cm–2, accompanied by outstanding durability 100 h. These results underscore splitting, paving way advancements sustainable technologies.

Language: Английский

Citations

0