Carbon Nanofiber-Encapsulated FeCoNiCuMn Sulfides with Tunable S Doping for Enhanced Oxygen Evolution Reaction DOI Open Access

Yuhan Sun,

Chen Shen,

Mingran Wang

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 14(9), P. 626 - 626

Published: Sept. 17, 2024

The oxygen evolution reaction (OER) stands out as a key electrochemical process for the conversion of clean energy. However, practical implementation OER is frequently impeded by its slow kinetics and necessity scarce expensive noble metal catalysts. High-entropy transition sulfides (HETMS) stand at forefront catalysts, renowned their exceptional catalytic performance diversity. Herein, we have synthesized HETMS catalyst, (FeCoNiCuMn50)S2, encapsulated within carbon nanofibers through one-step involving synergistic application electrospinning chemical vapor deposition. By precisely controlling doping levels sulfur, demonstrated that sulfur incorporation significantly increases exposed surface area alloy particles on optimizes electronic configuration elements. These findings reveal instrumental in substantial improvement catalyst’s performance. Notably, catalyst showed optimal activity sulfur-to-metal atom ratio 2:1, delivering an overpotential 254 mV current density 10 mA cm−2 1.0 M KOH solution. Furthermore, (FeCoNiCuMn50)S2 exhibited remarkable stability, underscoring potential efficient robust electrocatalyst sustainable energy applications.

Language: Английский

Enhanced Li-ion battery performance based on multisite oxygen vacancies in WO3-x@rGO negative electrode DOI
Zihao Li, Xijia Yang, Yue Yang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155383 - 155383

Published: Aug. 30, 2024

Language: Английский

Citations

12
Mechanism, modification and stability of tungsten oxide-based electrocatalysts for water splitting: A review DOI
Shuang Yu, Xiaomei Yu, Huijing Yang

et al.

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 99, P. 23 - 49

Published: July 26, 2024

Language: Английский

Citations

5
Chromium‐Doped NiBP Micro‐Sphere Electrocatalysts for Green Hydrogen Production under Industrial Operational Conditions DOI Open Access
Md Ahasan Habib, Shusen Lin, Sumiya Akter Dristy

et al.

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

Abstract Wide spread adaptation of green hydrogen can help to mitigate the serious climate issues, increasing global energy demands and development advanced electrocatalysts robust under industrial conditions is one key technological challenges. Herein, chromium‐doped nickel‐boride‐phosphide (Cr/NiBP) micro sphere (MS) electrocatalyst demonstrated via a two‐step hydrothermal approach along with post‐annealing. The Cr/NiBP MS demonstrates low evolution reaction oxygen evaluation over potentials 78 250 mV at 100 mA cm −2 in 1 m KOH, out performing most reported catalysts. ǁ exhibits only 1.54 V KOH surpasses benchmark RuO 2 (+) Pt/C (−) up 2000 , which sets it as best bifunctional electrocatalysts. Impressively, maintains stable performance for 240 h 1000 6 60°C, demonstrating rapid response, anti‐corrosion resistance, structural integrity meet operational conditions. Further, super‐low cell‐voltage 2.25 . small amount Cr atoms incorporation significantly enhance active sites intrinsic properties, accelerating water dissociation intermediate formation.

Language: Английский

Citations

0
Co–Fe–Mo Phosphides’ Triphasic Heterostructure Loaded on Nitrogen-Doped Carbon Nanofibers by Electrospinning as Efficient Bifunctional Electrocatalysts for Overall Water Splitting DOI
Mengya Cao, Li Bao, Yijia Cao

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

The rational design of efficient and stable bifunctional electrocatalysts for the hydrogen evolution reactions (HER) oxygen (OER) poses a significant challenge in realizing environmentally friendly production through electrocatalytic water splitting. construction heterostructure catalysts, coexisting multiple components, represents favorable approach increasing active sites, modulating electronic structure, accelerating charge transfer, decreasing reaction energy barriers, synergistically enhancing performance. In this study, triphasic metal phosphides' among CoP, FeP, MoP4 loaded on nitrogen-doped carbon nanofibers (labeled as CoP-FeP-MoP4@NC) was successfully synthesized electrospinning other subsequent steps electrocatalyst material Benefiting from strong interaction synergistic effect these CoP-FeP-MoP4@NC exhibits facile kinetics high activity under alkaline conditions with overpotentials (η) 222 75 mV at current density 10 mA cm-2 OER HER, respectively, well low cell voltage 1.47 V overall Moreover, catalyst shows great long-term stability about 100 cm-2. functional theory calculations revealed that CoP-FeP-MoP4 can reduce Gibbs free associated H2O dissociation adsorption during rate-determining step OER, increase states near Fermi level, optimize work function electrons, improving electrical conductivity capacity. This study presents an splitting, concept provides insights future advanced electrocatalysts.

Language: Английский

Citations

0
Tungsten–Cobalt Oxalate with Multiple Catalytic Sites as Efficient Electrocatalyst for Boosting Overall Water Splitting DOI

Kuppusamy Rajan,

Dhanasingh Thiruvengadam,

M.R. Suresh Kumar

et al.

ACS Applied Engineering Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Language: Английский

Citations

0
In-situ construction of vertically Fe doped CoMoP nanosheet honeycomb as bifunctional electrocatalysts for efficient overall water splitting DOI
Bingxin Zhao, Wenyue Jiang, Ziting Li

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 682, P. 1094 - 1103

Published: Dec. 9, 2024

Language: Английский

Citations

2
Carbon Nanofiber-Encapsulated FeCoNiCuMn Sulfides with Tunable S Doping for Enhanced Oxygen Evolution Reaction DOI Open Access

Yuhan Sun,

Chen Shen,

Mingran Wang

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 14(9), P. 626 - 626

Published: Sept. 17, 2024

The oxygen evolution reaction (OER) stands out as a key electrochemical process for the conversion of clean energy. However, practical implementation OER is frequently impeded by its slow kinetics and necessity scarce expensive noble metal catalysts. High-entropy transition sulfides (HETMS) stand at forefront catalysts, renowned their exceptional catalytic performance diversity. Herein, we have synthesized HETMS catalyst, (FeCoNiCuMn50)S2, encapsulated within carbon nanofibers through one-step involving synergistic application electrospinning chemical vapor deposition. By precisely controlling doping levels sulfur, demonstrated that sulfur incorporation significantly increases exposed surface area alloy particles on optimizes electronic configuration elements. These findings reveal instrumental in substantial improvement catalyst’s performance. Notably, catalyst showed optimal activity sulfur-to-metal atom ratio 2:1, delivering an overpotential 254 mV current density 10 mA cm−2 1.0 M KOH solution. Furthermore, (FeCoNiCuMn50)S2 exhibited remarkable stability, underscoring potential efficient robust electrocatalyst sustainable energy applications.

Language: Английский

Citations

0