模板法制备非晶态CoFe(OH)x 的电催化材料的研究

作者：Zhou Zhiyu; Chen Junxue; Li Yibing; Jiang Xuexian^*

来源：Journal of Functional Materials, 2023, 54(3): 3087-3091+3098.

DOI：10.3969/j.issn.1001-9731.2023.03.012

• amorphous state
• hydroxide compound
• iron-cobalt compound
• oxygen precipitation reaction

The development of transition metal electrocatalysts with efficient and durable activity of oxygen evolution reaction (OER) is important for clean hydrogen production. In this paper, amorphous binary metal hydroxides CoFe(OH)x were prepared by the template method. The phase structure and micromorphology of the catalyst were characterized by using X-ray powder diffraction instrument (XRD), Fourier transform infrared spectrum (FT-IR), field emission scanning electron microscope (SEM), and laser Raman confocal microscope Raman spectrometer (Raman). The catalytic performance of the catalyst in the oxygen precipitation reaction was investigated by the standard three-electrode system in an alkaline solution of 1 mol/L KOH with a saturated N2 atmosphere. Because of the presence of a large number of defects and reactive sites in the amorphous structure as well as intermetallic synergy, the overpotential of CoFe(OH)x/65 was 288 mV at a current density of 10 mA/cm2 by electrochemical testing. In addition, it showed good OER stability without significant weakening during 14 h of stable operation. ? 2023 Journal of Functional Materials.

• 单位
  桂林理工大学