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  

Study on fabrication of nanoflower⁃like Fe_(y)-NiCoS_(x)@NF catalysts and their application in hydrogen evolution and oxygen evolution during seawater electrolysis

作　　者：张豹 权凯栋 王永锋 韩非 史爱文 刘欣 王晓敏[1] ZHANG Bao;QUAN Kaidong;WANG Yongfeng;HAN Fei;SHI Aiwen;LIU Xin;WANG Xiaomin(Taiyuan University of Technology School of Materials Science and Engineering,Taiyuan 030000,China;CNOOC(Shanxi)Precious Metals Co.,LTD.,Jinzhong 030600,China)

机构地区：[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

出　　处：《无机盐工业》2025年第2期130-137,共8页Inorganic Chemicals Industry

基　　金：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;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)。

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0.5mmol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10mA/cm^(2)电流密度下只需要133mV的过电位;在模拟海水体系中于10mA/cm^(2)电流密度下可以连续运行超100h,表现出良好的长周期稳定性,优于商业RuO_(2)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。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 environ-ments.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 in-vestigated extensively as potential catalysts for the anodic OER.In this study,TMD catalysts with Fe doping were synthe-sized 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 effec-tively exposed the active sites of the catalyst and enhanced mass transport and gas diffusion during the reaction.The cata-lytic performance of the OER was excellent in both alkaline and simulated seawater systems.In the alkaline system,a cur-rent density of 10 mA/cm^(2)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/cm^(2),displaying superior long-term stability compared to commercial RuO_(2) catalysts.This study provided a highly efficient and stable anode material for hydrogen pro-duction from electrolytic seawater,offering new insights and directions for the realization of sustainable hydrogen energy production.

关 键 词：电解海水制氢 析氧反应 过渡金属硫化物 元素掺杂 

分 类 号：TQ151.1[化学工程—电化学工业]