Enhanced Acidic Oxygen Evolution Reaction Performance by Anchoring Iridium Oxide Nanoparticles on Co3O4 DOI

Gege Tao,

Zhi-Qiang Wang, Xiaohui Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 17(1), P. 1350 - 1360

Published: Dec. 18, 2024

The sluggish kinetics of the anodic process, known as oxygen evolution reaction (OER), has posed a significant challenge for practical application proton exchange membrane water electrolyzers in industrial settings. This study introduces high-performance OER catalyst by anchoring iridium oxide nanoparticles (IrO2) onto cobalt (Co3O4) substrate via two-step combustion method. resulting IrO2@Co3O4 demonstrates enhancement both catalytic activity and stability acidic environments. Notably, overpotential required to attain current density 10 mA cm–2, commonly used benchmark comparison, is merely 301 mV. Furthermore, maintained over duration 80 h, confirmed minimal rise overpotential. Energy spectrum characterizations experimental results reveal that generation OER-active Ir3+ species on surface induced strong interaction between IrO2 Co3O4. Theoretical calculations further indicate sites loaded Co3O4 have lower energy barrier *OOH deprotonation form desorbed O2. Moreover, this also stabilizes active maintaining their chemical state, leading superior long-term stability. These insights could significantly impact strategies designing synthesizing more efficient electrocatalysts broader application.

Language: Английский

Scaling Up Stability: Navigating from Lab Insights to Robust Oxygen Evolution Electrocatalysts for Industrial Water Electrolysis DOI
Faiza Meharban, Chao Lin,

Xiaotong Wu

et al.

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

Published: Aug. 29, 2024

Abstract In the pursuit of sustainable hydrogen production via water electrolysis, paramount importance electrocatalyst stability emerges as a defining factor for long‐term industrial viability. A thorough understanding and enhancement not only ensure extended catalyst lifetimes but also pave way consistent efficient generation. This review focuses on pivotal role in determining practical viability oxygen evolution electrocatalysts (OECs) large‐scale applications electrolysis production. The paper explores over initial activity, citing examples hypothetical scenarios. First, figures merits evaluation are explained along with available benchmarking protocols evaluation. Further, text delves into various strategies that can enhance which include self‐healing/regeneration pathway, reaction (OER) mechanism optimization to achieve highly stable OER stabilization active metals atoms within inhibit dissolution forward application. interplay stability, cost is suit application electrocatalyst. Lastly, it outlines challenges, prospects, future directions, presenting guide advancing OECs generation landscape.

Language: Английский

Citations

11
Recent Progress on the Stability of Electrocatalysts under High Current Densities toward Industrial Water Splitting DOI

Shumin Gong,

Yao Meng,

Zeying Jin

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 14399 - 14435

Published: Sept. 14, 2024

Language: Английский

Citations

11
Proton Exchange Membrane Water Splitting: Advances in Electrode Structure and Mass‐Charge Transport Optimization DOI Creative Commons
Wenting Feng, Bin Chang, Yuanfu Ren

et al.

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

Published: March 4, 2025

Abstract Proton exchange membrane water electrolysis (PEMWE) represents a promising technology for renewable hydrogen production. However, the large‐scale commercialization of PEMWE faces challenges due to need acid oxygen evolution reaction (OER) catalysts with long‐term stability and corrosion‐resistant electrode assemblies (MEA). This review thoroughly examines deactivation mechanisms acidic OER crucial factors affecting assembly instability in complex environments, including catalyst degradation, dynamic behavior at MEA triple‐phase boundary, equipment failures. Targeted solutions are proposed, improvements, optimized designs, operational strategies. Finally, highlights perspectives on strict activity/stability evaluation standards, situ/operando characteristics, practical electrolyzer optimization. These insights emphasize interrelationship between catalysts, MEAs, activity, stability, offering new guidance accelerating systems.

Language: Английский

Citations

1
Accelerating the green hydrogen revolution: The synergy of PEMWE and AI DOI Creative Commons
Ning Wang, Hongjun Xiang, Ling Meng

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
A Bifunctional Nanostructured RuPt/C Electrocatalyst for Energy Storage Based on the Chlor-Alkali Process DOI Creative Commons
Nuria Romero, Mahmoud M. Gomaa, Jérôme Esvan

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(7), P. 506 - 506

Published: March 27, 2025

This study focuses on the design of a novel electrode for an energy storage system utilizing EDEN (electrochemical-based decarbonizing energy) technology. technology implies chlor-alkali electrochemical cell with dual functionality: first, electrolysis water and NaCl to produce hydrogen (H2) chlorine (Cl2), subsequently, utilization these products in H2/Cl2 fuel generate electricity. Bimetallic RuPt nanoparticles have been synthesized Vulcan carbon (C-V) from organometallic precursors be used as electrocatalysts. Characterization includes transmission electron microscopy (TEM), high-angle annular dark-field scanning (HAADF-STEM), energy-dispersive X-ray spectroscopy (EDX), photoelectron (XPS), powder diffraction (XRD). The RuPt/C-V-based demonstrated notable performance target reversible cell, acting anode cathode fuel-cell mode. Testing 3D-printed revealed high efficiency, coulombic efficiency exceeding 96% production, yielding 11.75 mg·Wh−1 achieving power output approximately 4.5 mW·cm−2 operation.

Language: Английский

Citations

0
Advances in Ru-based Acidic OER Electrocatalysts: Addressing the Activity-Stability Trade-off DOI Creative Commons
Yurui Wang, Yang Liu, Jinqiang Zhang

et al.

Published: April 1, 2025

Language: Английский

Citations

0
Homologous heterostructures of Ni/NiFeO Mott–Schottky for alkaline water electrolysis DOI

M. J. Liu,

Hua Gui Yang, Zihao Zhou

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(33), P. 22210 - 22219

Published: Jan. 1, 2024

An in situ strategy is proposed to fabricate a Mott–Schottky Ni/NiFeO catalyst composed of Ni nanoparticles over NiFeO nanosheets, which leads charge transfer from Fe and promotes the bifunctional activity for HER OER.

Language: Английский

Citations

1
Enhanced Acidic Oxygen Evolution Reaction Performance by Anchoring Iridium Oxide Nanoparticles on Co3O4 DOI

Gege Tao,

Zhi-Qiang Wang, Xiaohui Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 17(1), P. 1350 - 1360

Published: Dec. 18, 2024

The sluggish kinetics of the anodic process, known as oxygen evolution reaction (OER), has posed a significant challenge for practical application proton exchange membrane water electrolyzers in industrial settings. This study introduces high-performance OER catalyst by anchoring iridium oxide nanoparticles (IrO2) onto cobalt (Co3O4) substrate via two-step combustion method. resulting IrO2@Co3O4 demonstrates enhancement both catalytic activity and stability acidic environments. Notably, overpotential required to attain current density 10 mA cm–2, commonly used benchmark comparison, is merely 301 mV. Furthermore, maintained over duration 80 h, confirmed minimal rise overpotential. Energy spectrum characterizations experimental results reveal that generation OER-active Ir3+ species on surface induced strong interaction between IrO2 Co3O4. Theoretical calculations further indicate sites loaded Co3O4 have lower energy barrier *OOH deprotonation form desorbed O2. Moreover, this also stabilizes active maintaining their chemical state, leading superior long-term stability. These insights could significantly impact strategies designing synthesizing more efficient electrocatalysts broader application.

Language: Английский

Citations

0