Nickel-iron layered double hydroxide shows significant promise as an electrocatalyst in facilitating oxygen evolution reactions. But its development is hindered by low conductivity and insufficient cycling stability. Herein, the synthesis of a hierarchically structured heterostructure catalyst, CeO@NiFe LDH, is reported through a straightforward two-step process involving hydrothermal treatment. The catalyst realizes a significant breakthrough in OER catalytic performance and stability. At a current density of 100 mA cm, the overpotentials amount to 255 mV in 1 M KOH, 263 mV in simulated seawater with alkaline conditions, and 346 mV in actual alkaline seawater. After 200 hours of continuous operation under high current density in simulated alkaline seawater, the morphology with no significant alterations observed, highlighting its high stability in complex seawater environments. Introducing CeO optimizes the binding energy of the OH intermediate, which facilitates the formation and dissociation of the OOH intermediate. In situ Raman analysis demonstrates the positive impact of CeO on the generation of active species. This research emphasizes the efficacy of CeO in improving the performance and durability of NiFe LDH for oxygen evolution reactions.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/chem.202404278 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Modulation of Electrochemical Reactions through External Stimuli: Applications in Oxygen Evolution Reaction and Beyond.
ACS Nano
January 2025
Department of Materials Science and Engineering, National University of Singapore, Singapore 117575, Singapore.
Electrochemical water splitting is a promising method for generating green hydrogen gas, offering a sustainable approach to addressing global energy challenges. However, the sluggish kinetics of the anodic oxygen evolution reaction (OER) poses a great obstacle to its practical application. Recently, increasing attention has been focused on introducing various external stimuli to modify the OER process.
View Article and Find Full Text PDFAdipokines regulate the development and progression of MASLD through organellar oxidative stress.
Hepatol Commun
February 2025
Central laboratory, Endocrine and Metabolic Diseases Hospital of Shandong First Medical University, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, China.
The prevalence of metabolic dysfunction-associated steatotic liver disease (MASLD), which is increasingly being recognized as a leading cause of chronic liver pathology globally, is increasing. The pathophysiological underpinnings of its progression, which is currently under active investigation, involve oxidative stress. Human adipose tissue, an integral endocrine organ, secretes an array of adipokines that are modulated by dietary patterns and lifestyle choices.
View Article and Find Full Text PDFGraphitic Carbon Nitride-Supported Layered Double Hydroxides (GCN@FeMg-LDH) for Efficient Water Splitting and Energy Harvesting.
ACS Appl Mater Interfaces
January 2025
Department of Environmental Engineering, Kwangwoon University, Seoul 01897, Republic of Korea.
The advancement of highly efficient and cost-effective electrocatalysts for electrochemical water splitting, along with the development of triboelectric nanogenerators (TENGs), is crucial for sustainable energy generation and harvesting. In this study, a novel hybrid composite by integrating graphitic carbon nitride (GCN) with an earth-abundant FeMg-layered double hydroxide (LDH) (GCN@FeMg-LDH) was synthesized by the hydrothermal approach. Under controlled conditions, with optimized concentrations of metal ions and GCN, the fabricated electrode, GCN@FeMg-LDH demonstrated remarkably low overpotentials of 0.
View Article and Find Full Text PDFLow-Level Fe Doping in CoMoO Enhances Surface Reconstruction and Electronic Modulation Creating an Outstanding OER Electrocatalyst for Water Splitting.
Inorg Chem
January 2025
Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China.
Efficient and stable nonprecious metal-based oxygen evolution reaction (OER) electrocatalysts are pivotal for water electrolysis technology. Herein, we are reporting an effective strategy for fabricating efficient Co-based OER electrocatalysts by low-level Fe doping in CoMoO to boost surface reconstruction and electronic modulation, which resulted in excellent OER electroactivity consequently. Our findings reveal that a mere 5.
View Article and Find Full Text PDFFieldwork on animals living in extreme conditions as a source of biomedical innovation.
Sci One Health
November 2024
CR University Grenoble Alpes, Institute for Advanced Biosciences, Inserm U1209, CNRS UMR 5309, Grenoble, France.
Most biomedical research on animals is based on the handful of the so-called standard model organisms, i.e. laboratory mice, rats or , but the keys to some important biomedical questions may simply not be found in these.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!