SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2022, Vol. 41 ›› Issue (1): 480-487.DOI: 10.1016/j.cjche.2021.11.011

• Energy Science and Technology • 上一篇    下一篇

Ag nanoparticles anchored on MIL-100/nickel foam nanosheets as an electrocatalyst for efficient oxygen evolution reaction performance

Tao Zhao, Dazhong Zhong, Genyan Hao, Guang Liu, Jinping Li, Qiang Zhao   

  1. Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
  • 收稿日期:2021-06-27 修回日期:2021-11-18 出版日期:2022-01-28 发布日期:2022-02-25
  • 通讯作者: Qiang Zhao,E-mail address:zhaoqiang@tyut.edu.cn
  • 基金资助:
    The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (21878202, 21975175), and the Natural Science Foundation of Shanxi Province (201801D121052).

Ag nanoparticles anchored on MIL-100/nickel foam nanosheets as an electrocatalyst for efficient oxygen evolution reaction performance

Tao Zhao, Dazhong Zhong, Genyan Hao, Guang Liu, Jinping Li, Qiang Zhao   

  1. Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
  • Received:2021-06-27 Revised:2021-11-18 Online:2022-01-28 Published:2022-02-25
  • Contact: Qiang Zhao,E-mail address:zhaoqiang@tyut.edu.cn
  • Supported by:
    The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (21878202, 21975175), and the Natural Science Foundation of Shanxi Province (201801D121052).

摘要: Metal-organic frameworks (MOFs) exhibit excellent application potential in the field of electrocatalysis. In this study, we first prepare MIL-100 nanosheets on nickel foam (MIL-100/NF) and then successfully anchor Ag nanoparticles (NPs) on the nanosheets (Ag@MIL-100/NF) for oxygen evolution reaction (OER) catalysis. This strategy dramatically improves the conductivity of MIL-100 and the Ag NPs are uniformly dispersed on the nanosheets. The Ag@MIL-100/NF catalyst has excellent electrocatalytic performance and long-term corrosion resistance, with a low overpotential of 207 mV and a long-term stability of at least 100 h at a current density of 50 mA·cm-2. The experimental results demonstrate that this high OER catalytic performance is due to the improved charge transfer after loading Ag NPs, the combination of nanosheets and highly dispersed Ag NPs that expose more active sites and the adjusted chemical valence states of Fe and Ni in MIL-100. This work provides a surface decoration approach for the preparation of excellent catalysts directly used in the OER.

关键词: Ag@MIL-100/NF, Metal–organic frameworks, Catalysis, Kinetics, Overpotential, Electrochemistry

Abstract: Metal-organic frameworks (MOFs) exhibit excellent application potential in the field of electrocatalysis. In this study, we first prepare MIL-100 nanosheets on nickel foam (MIL-100/NF) and then successfully anchor Ag nanoparticles (NPs) on the nanosheets (Ag@MIL-100/NF) for oxygen evolution reaction (OER) catalysis. This strategy dramatically improves the conductivity of MIL-100 and the Ag NPs are uniformly dispersed on the nanosheets. The Ag@MIL-100/NF catalyst has excellent electrocatalytic performance and long-term corrosion resistance, with a low overpotential of 207 mV and a long-term stability of at least 100 h at a current density of 50 mA·cm-2. The experimental results demonstrate that this high OER catalytic performance is due to the improved charge transfer after loading Ag NPs, the combination of nanosheets and highly dispersed Ag NPs that expose more active sites and the adjusted chemical valence states of Fe and Ni in MIL-100. This work provides a surface decoration approach for the preparation of excellent catalysts directly used in the OER.

Key words: Ag@MIL-100/NF, Metal–organic frameworks, Catalysis, Kinetics, Overpotential, Electrochemistry