Chemical Research in Chinese Universities ›› 2023, Vol. 39 ›› Issue (2): 219-223.doi: 10.1007/s40242-022-2228-1

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Electronic and Nano-structural Modulation of Co(OH)2 Nanosheets by Fe-Benzenedicarboxylate for Efficient Oxygen Evolution

XIAO Long1, WU Huirong1, ZHANG Yong1, SUN Hao1, ZHANG Wenchao2, LYU Fenglei1, DENG Zhao1, PENG Yang1   

  1. 1. Soochow Institute for Energy and Material Innovations, College of Energy, Soochow University, Suzhou 215006, P. R. China;
    2. School of Chemistry and Life Science, Suzhou University of Science and Technology, Suzhou 215009, P. R. China
  • Received:2022-07-08 Online:2023-04-01 Published:2023-03-16
  • Contact: LYU Fenglei, PENG Yang E-mail:fllv@suda.edu.cn;ypeng@suda.edu.cn
  • Supported by:
    This work was supported by the National Key R&D Program of China (No.2020YFB1505703), the National Natural Science Foundation of China (Nos.22072101, 22075193), the Natural Science Foundation of Jiangsu Province, China(Nos.BK20211306, BK20220483), the Fund of the Key Technology Initiative of Suzhou Municipal Science and Technology Bureau, China(No.SYG201934), the Six Talent Peaks Project in Jiangsu Province, China(No.TD-XCL-006), and the Priority Academic Program Development(PAPD) of Jiangsu Higher Education Institutions, China.

Abstract: Oxygen evolution reaction(OER) plays a key role in the electrochemical conversion and storage processes, but the sluggish kinetics of OER strongly impedes its large-scale applications. We herein reported the in situ growth of Fe-benzenedicarboxylate(Fe-BDC) on Co(OH)2 nanoplates[Fe-BDC/ Co(OH)2] that showed remarkably enhanced OER activity than the pristine Co(OH)2. The incorporation of Fe species could enhance the intrinsic OER activity of Co and BDC could increase the electro-chemically active surface area(ECSA), thus resulting in dramatically enhanced OER activity. In situ Raman spectroscopy characterization disclosed that Fe-CoOOH reconstructed from Fe-BDC/Co(OH)2 was the real active site for OER. This work highlights the significance of rational tailoring of the nanostructure and electronic structure of Co(OH)2 and provides more opportunities for its widespread applications.

Key words: Co(OH)2 nanoplate, Oxygen evolution reaction, Electronic structure, Nanostructure, In situ Raman spectroscopy