Chemical Industry and Engineering Progress ›› 2025, Vol. 44 ›› Issue (7): 3928-3937.DOI: 10.16085/j.issn.1000-6613.2024-0966

• Industrial catalysis • Previous Articles    

Preparation of FeNi3-Fe3O4/CN electrocatalysts and their electrocatalytic oxygen evolution performance

CHEN Dongjian1,2(), SUN Yuqian1, YIN Fengxiang1,2()   

  1. 1.School of Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, China
    2.Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, Jiangsu, China
  • Received:2024-06-16 Revised:2024-09-29 Online:2025-08-04 Published:2025-07-25
  • Contact: YIN Fengxiang

FeNi3-Fe3O4/CN催化剂的制备及其电催化析氧性能

陈东健1,2(), 孙雨倩1, 银凤翔1,2()   

  1. 1.常州大学石油化工学院,江苏 常州 213164
    2.常州大学江苏省先进催化材料与技术重点实验室,江苏 常州 213164
  • 通讯作者: 银凤翔
  • 作者简介:陈东健(1999—),男,硕士研究生,研究方向为电催化。E-mail:1970485350@qq.com
  • 基金资助:
    国家自然科学基金(22078027)

Abstract:

In water electrolysis to hydrogen, the oxygen evolution reaction (OER) on the anode has a high energy barrier, which reduces the efficiency of water electrolysis. Therefore, the development of efficient oxygen evolution catalysts is crucial to promote the industrialization of water electrolysis. A series of FeNi/CN catalysts with various Fe and Ni contents were prepared by high-temperature pyrolysis of polyaniline, ferric nitrate and nickel nitrate. The structure of the catalysts was characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS), and their electrochemical OER performance in alkaline electrolyte was evaluated using linear sweep voltammetry (LSV) and chronoamperometry (CP). The results showed that the prepared catalysts containing FeNi3 and Fe3O4 nanoparticles were well-dispersed on the polyaniline-derived carbon. With the gradual decrease in Fe content, the OER overpotential initially decreased and then increased. The Fe1Ni1/CN catalyst exhibited the lowest OER overpotential of only 339mV at 10mA/cm2 and a Tafel slope of 87mV/dec, demonstrating an OER activity superior to most iron-based and nickel-based catalysts reported in the literature.

Key words: electrochemistry, catalyst, composites, oxygen evolution reaction, ferroferric oxide (Fe3O4), NiFe alloy

摘要:

电解水制氢中的阳极析氧反应(OER)因反应能垒较高,降低了电解水的效率,因此研发高效的析氧催化剂是推动电解水产业化的重要途径。本文通过高温热解聚苯胺、硝酸铁和硝酸镍制备了一系列不同Fe和Ni含量的FeNi/CN催化剂。通过X射线衍射(XRD)、透射电镜(TEM)和X射线光电子能谱(XPS)等分析手段表征了催化剂的结构,采用线性扫描伏安法(LSV)和计时电位法(CP)等方法在碱性电解液中评价了催化剂的电化学析氧性能。结果表明,所制备的催化剂中含有FeNi3和Fe3O4纳米颗粒,这些颗粒很好地分散在聚苯胺衍生的碳上。随着铁含量的逐渐降低,OER过电位表现出先减小后增大的趋势。其中,Fe1Ni1/CN催化剂具有最低的OER过电位,在10mA/cm2下的过电位仅为339mV,Tafel斜率为87mV/dec,表现出最好的OER催化活性,优于文献中报道的大多数铁基和镍基催化剂。

关键词: 电化学, 催化剂, 复合材料, 析氧反应, 四氧化三铁, 镍铁合金

CLC Number: 

京ICP备12046843号-2;京公网安备 11010102001994号
Copyright © Chemical Industry and Engineering Progress, All Rights Reserved.
E-mail: hgjz@cip.com.cn
Powered by Beijing Magtech Co. Ltd