无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2024, Vol. 56 ›› Issue (2): 152-158.doi: 10.19964/j.issn.1006-4990.2023-0287

• 催化材料 • 上一篇    

Fe3+协同Ni基金属-有机框架提升电催化析氧反应活性的研究

陈星亮1(), 范文娟2, 常会2, 黄海平1, 蒋志强2()   

  1. 1.江西理工大学材料冶金化学学部,江西 赣州 341000
    2.攀枝花学院钒钛 资源综合利用四川省重点实验室,四川 攀枝花 617000
  • 收稿日期:2023-05-25 出版日期:2024-02-10 发布日期:2024-02-06
  • 通讯作者: 蒋志强(1980— ),男,教授,主要研究方向为新能源材料的制备及其清洁利用;E-mail:myjiangzq@163.com
  • 作者简介:陈星亮(1997— ),女,硕士,主要研究方向为新能源材料的制备及其在能源中的应用;E-mail:Chenxl43@163.com
  • 基金资助:
    国家自然科学基金项目(22272086);四川省自然科学基金项目(2023NSFSC0009);四川省高等学校绿色化学重点实验室开放项目(LZY1901)

Study on collaborative strategy between Fe3+ and Ni-based metal-organic frameworks for boosting electrocatalytic oxygen evolution

CHEN Xingliang1(), FAN Wenjuan2, CHANG Hui2, HUANG Haiping1, JIANG Zhiqiang2()   

  1. 1.Faculty of Meterials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,China
    2.Vanadium and Titanium Resource Comprehensive Utilization Key Laboratory of Sichuan Province,Panzhihua University,Panzhihua 617000,China
  • Received:2023-05-25 Published:2024-02-10 Online:2024-02-06

摘要:

采用溶剂热法合成了金属-有机框架材料(phen-Ni),然后通过掺杂异金属Fe3+制备了Fe@phen-Ni电催化剂。利用X射线单晶衍射仪、X射线光电子能谱仪、扫描电子显微镜和透射电子显微镜等对催化剂的物相、形貌及各成分化学状态进行表征。利用线性扫描伏安法(LSV)和电化学阻抗谱(EIS)等研究了Fe@phen-Ni催化剂的电催化析氧(OER)性能。结果表明,当电流密度为10 mA/cm2时,Fe@phen-Ni的OER过电位为333 mV,与phen-Ni相比显示出更优异的OER催化活性。Fe@phen-Ni电催化活性的提高归因于Fe3+的引入,这不仅增加了电催化剂的活性位点,而且由于Fe3+和Ni2+的协同作用,促进了电子转移,从而提高了电催化活性。该工作不仅证实了异金属离子的掺杂有利于提高电催化析氧活性,而且为基于金属-有机框架材料制备电化学OER催化剂提供了新的思路。

关键词: 金属-有机框架, 电催化, 析氧反应, 非贵金属电催化剂

Abstract:

The metal-organic framework materials(phen-Ni) were synthesized by solvothermal method,and then Fe@phen-Ni electrocatalys were prepared by doping heterometallic Fe3+.The morphology,crystal structure and chemical composition of Fe@phen-Ni were characterized by X-ray single crystal diffractometer,scanning electron microscope(SEM),transmission electron microscope(TEM) and X-ray photoelectron spectrometer(XPS).The electrochemical oxygen evolution reaction(OER) activity of Fe@phen-Ni was investigated by linear sweep voltammetry(LSV) and electrochemical impedance spectroscopy(EIS).The results exhibited that Fe@phen-Ni had more excellent electrocatalytic performance with an overpotential of 333 mV at the current density of 10 mA/cm2 when compared with that of phen-Ni.The improvement could be attributed to the two factors.The introduction of Fe3+ increased the active site of the electrocatalyst.The synergistic action of Fe3+ and Ni2+ promoted the electron transfer.This work not only confirmed that doping of Fe3+ was beneficial to improve the electrocatalytic oxygen-evolution activity,but also provided a new idea for the preparation of electrocatalytic OER catalysts based on metal-organic frame materials.

Key words: metal-organic frameworks, electrocatalysis, oxygen evolution reaction, nonprecious metal electrocatalyst

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