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 ›› 2025, Vol. 57 ›› Issue (2): 130-137.doi: 10.19964/j.issn.1006-4990.2024-0182

• 催化材料 • 上一篇    下一篇

纳米花状Fe y -NiCoS x @NF催化材料制备及电解海水制氢析氧的研究

张豹1,2(), 权凯栋2, 王永锋2, 韩非2, 史爱文2, 刘欣2, 王晓敏1()   

  1. 1.太原理工大学材料科学与工程学院,山西 太原 030000
    2.中海油(山西)贵金属有限公司,山西 晋中 030600
  • 收稿日期:2024-04-02 出版日期:2025-02-10 发布日期:2024-06-03
  • 通讯作者: 王晓敏(1968— ),女,工学博士,教授,博士生导师,研究方向为储能材料与器件;E-mail:wangxiaomin@tyut.edu.cn
  • 作者简介:张豹(1999— ),男,硕士研究生,研究方向为电解水制氢催化剂;E-mail:1814009956@qq.com
  • 基金资助:
    国家自然科学基金面上项目(52072256);国家自然科学基金青年科学基金项目(52301282);山西省重点研发计划项目(202202070301016);山西省重点研发计划项目(202102030201006);中央引导地方科技发展资金项目(YDZJSX2021B005);山西省科技计划揭榜招标项目(20201101016);山西省科技创新基地建设项目(YDZJSX2022B003)

Study on fabrication of nanoflower-like Fe y -NiCoS x @NF catalysts and their application in hydrogen evolution and oxygen evolution during seawater electrolysis

ZHANG Bao1,2(), QUAN Kaidong2, WANG Yongfeng2, HAN Fei2, SHI Aiwen2, LIU Xin2, WANG Xiaomin1()   

  1. 1.Taiyuan University of Technology School of Materials Science and Engineering,Taiyuan 030000,China
    2.CNOOC(Shanxi) Precious Metals Co. ,LTD. ,Jinzhong 030600,China
  • Received:2024-04-02 Published:2025-02-10 Online:2024-06-03

摘要:

由于海水中成分复杂,且高氯环境导致阳极催化剂的寿命缩短和析氯竞争反应等问题,电解海水制氢的发展受到了阻碍。因此,亟需开发一种高效、稳定、高选择性的阳极催化剂。过渡金属硫化物(TMDs)作为一种高效的析氧阳极催化剂被广泛关注,基于此,通过水热合成法在泡沫镍基底上原位生长不同含量铁掺杂的过渡金属硫化物。结果表明,当铁掺杂量为0.5 mmol时,合成的自支撑催化剂具有独特的纳米花状结构,该结构能够充分暴露催化剂的活性位点,促进反应过程中的质量传输和气体扩散,在碱性体系和模拟海水体系中均表现出优异的析氧反应催化性能。其中,在碱性体系中10 mA/cm2电流密度下只需要133 mV的过电位;在模拟海水体系中于10 mA/cm2电流密度下可以连续运行超100 h,表现出良好的长周期稳定性,优于商业RuO2催化剂。该研究制备了一种高效、稳定的电解海水制氢阳极材料,为实现可持续的氢能源生产提供了新的思路和方向。

关键词: 电解海水制氢, 析氧反应, 过渡金属硫化物, 元素掺杂

Abstract:

The development of hydrogen production via electrolysis of seawater is impeded by the complex composition of seawater,the short lifespan of anode catalysts,and the competitive reaction for chlorine evolution in high-chloride environments.Consequently,the design of efficient,stable,and highly selective catalysts is crucial for the oxygen evolution reaction(OER) in electrolytic processes.Transition metal sulfides(TMDs),doped with varying contents of iron(Fe),have been investigated extensively as potential catalysts for the anodic OER.In this study,TMD catalysts with Fe doping were synthesized in situ on nickel foam substrates using a hydrothermal synthesis method.The experimental results demonstrated that when the Fe doping amount was 0.5 mmol,the synthesized catalyst exhibited a unique nano-flower structure,which effectively exposed the active sites of the catalyst and enhanced mass transport and gas diffusion during the reaction.The catalytic performance of the OER was excellent in both alkaline and simulated seawater systems.In the alkaline system,a current density of 10 mA/cm² was achieved with an overpotential of only 133 mV.In the simulated seawater system,the catalyst could operate continuously for over 100 hours at a current density of 10 mA/cm²,displaying superior long-term stability compared to commercial RuO2 catalysts.This study provided a highly efficient and stable anode material for hydrogen production from electrolytic seawater,offering new insights and directions for the realization of sustainable hydrogen energy production.

Key words: hydrogen production by electrolytic seawater, oxygen evolution reaction, transition metal sulfide, element doping

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