Citation: Zhongjie Song, Nannan Zhang, Jun Yu, Huiyu Sun, Zhengying Wu, Yukou Du. Growth of Ce-doped NiCo-LDHs on tin dioxide-modified nickel foam as oxygen evolution reaction catalyst electrode[J]. Chinese Chemical Letters, ;2026, 37(1): 111804. doi: 10.1016/j.cclet.2025.111804 shu

Growth of Ce-doped NiCo-LDHs on tin dioxide-modified nickel foam as oxygen evolution reaction catalyst electrode

Zhongjie Song ^a ,
Nannan Zhang ^a ,
Jun Yu ^a ,
Huiyu Sun ^a ,
Zhengying Wu ^{b, *,} ,
Yukou Du ^{a, *,}

a.
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
b.
Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China

zywu@mail.usts.edu.cn

duyk@suda.edu.cn

Received Date: 13 July 2025
Revised Date: 23 August 2025
Accepted Date: 8 September 2025
Available Online: 9 September 2025

Figures(4)

Developing catalysts with excellent stability while significantly reducing the overpotential of the oxygen evolution reaction (OER) is crucial for advancing overall water splitting (OWS) systems. In this study, we synthesized the electrode material Ce-NiCo-LDHs@SnO₂/NF through a two-step hydrothermal reaction, where Ce-doped NiCo-LDHs are grown on nickel foam modified by a SnO₂ layer. Ce doping adjusts the internal electronic distribution of NiCo-LDHs, while the introduction of the SnO₂ layer enhances electron transfer capability. Together, these factors contribute to the reduction of the OER energy barrier and experimental evidence confirms that the reaction proceeds via the lattice oxygen evolution mechanism (LOM). Consequently, Ce-NiCo-LDHs@SnO₂/NF exhibits high level electrochemical performance in OER, requiring only 234 mV overpotential to achieve a current density of 10 mA/cm², with a Tafel slope of just 27.39 mV/dec. When paired with Pt/C/NF, an external potential of only 1.54 V is needed to drive OWS to attain a current density amounting to 10 mA/cm². Furthermore, the catalyst demonstrates stability for 100 h during the OWS stability test. This study underscores the feasibility of enhancing the OER performance through Ce doping and the introduction of a conductive SnO₂ layer.
- Oxygen evolution reaction,
- Heterostructure,
- Doping,
- Conductive layer
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