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Related Experiment Video

Updated: Feb 5, 2026

AC Electrokinetic Phenomena Generated by Microelectrode Structures
20:38

AC Electrokinetic Phenomena Generated by Microelectrode Structures

Published on: July 28, 2008

11.9K

CeO

Xixi Wang1, Yu Yang2, Lechen Diao1

  • 1School of Materials Science and Engineering and Tianjin Key Laboratory of Composites and Functional Materials , Tianjin University , Tianjin 300350 , China.

ACS Applied Materials & Interfaces
|September 19, 2018
PubMed
Summary

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This summary is machine-generated.

This study introduces a novel electrocatalyst, NiFe-layered double hydroxide (NiFe LDH) enhanced with cerium oxide (CeO x), for efficient water splitting. The engineered catalyst exhibits superior bifunctional activity for both oxygen and hydrogen evolution reactions in alkaline solutions.

Area of Science:

  • Electrochemistry
  • Materials Science
  • Catalysis

Background:

  • Nickel-iron layered double hydroxide (NiFe LDH) shows promise as a bifunctional electrocatalyst for water splitting.
  • NiFe LDH suffers from poor electronic conductivity and limited active sites, hindering its hydrogen evolution reaction (HER) activity.
  • Developing efficient electrocatalysts is crucial for sustainable energy technologies.

Purpose of the Study:

  • To enhance the bifunctional electrocatalytic activity of NiFe LDH for overall water splitting.
  • To improve the hydrogen evolution reaction (HER) performance of NiFe LDH by addressing conductivity and active site limitations.
  • To investigate the role of oxygen vacancies in improving electrocatalytic efficiency.

Main Methods:

  • Fabrication of a three-dimensional self-supporting electrode by electrodepositing cerium oxide (CeO x) nanoparticles onto NiFe LDH nanosheets.
Keywords:
NiFe-layered double hydroxideceriahydrogen evolution reactionoxygen vacancy engineeringwater splitting

Related Experiment Videos

Last Updated: Feb 5, 2026

AC Electrokinetic Phenomena Generated by Microelectrode Structures
20:38

AC Electrokinetic Phenomena Generated by Microelectrode Structures

Published on: July 28, 2008

11.9K
  • Utilizing density functional theory (DFT) calculations to understand the mechanism of oxygen vacancy formation.
  • Experimental characterization and electrochemical testing of the synthesized electrode for water splitting.

    • Main Results:

    • Successful introduction of oxygen vacancies at the NiFe LDH/CeO x interface due to charge accumulation.
    • Oxygen vacancies were shown to enhance electron/ion migration, charge transfer, and increase electrochemical active sites.
    • The NF@NiFe LDH/CeO x electrode achieved an overall water splitting potential of 1.51 V at 10 mA cm-2, outperforming benchmarks like Pt/C and RuO2.

    Conclusions:

    • The engineered NiFe LDH/CeO x electrode with oxygen vacancies demonstrates significantly improved HER activity and bifunctional performance.
    • The study highlights the effectiveness of incorporating oxygen vacancies to boost electrocatalyst efficiency for water splitting.
    • This material presents a promising alternative for bifunctional electrocatalysts in sustainable hydrogen production.