SiO_(2)-镍铁基复合析氧催化剂研制  

SiO_(2)-Nickel-Iron Composite Oxygen Evolution Catalyst

作　　者：曾强 林元华[1,2] Abdelhadi El jaouhari[1] 张溪桓 李春月 谢鹏飞 黄耕 刘婉颖 刘丽[2] ZENG Qiang;LIN Yuanhua;Abdelhadi El jaouhari;ZHANG Xihuan;LI Chunyue;XIE Pengfei;HUANG Geng;LIU Wanying;LIU Li(State Key Laboratory of Oil and Gas Reservoir Geology and Development Engineering,Southwest Petroleum University,Chengdu 610500,China;School of New Energy and Materials,Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500 [2]西南石油大学新能源与材料学院,四川成都610500

出　　处：《新技术新工艺》2023年第4期14-18,共5页New Technology & New Process

基　　金：国家自然科学基金项目(52074232);四川省自然科学基金重点项目(2022NSFSC0028,2022NSFSC0994)。

摘　　要：近年来,电催化制氢析氧反应在清洁能源生产和高效储能方面倍受关注。镍铁基化合物资源丰富,价格低廉,具有优异的催化性能,被广泛用作电解水OER催化剂。为提高镍铁基催化剂的活性和稳定性,以泡沫镍金属片作为导电基底材料,用水热合成的方法在其表面原位合成镍铁基析氧催化剂本体,然后在其上制作SiO_(2)膜层材料,得到SiO_(2)-镍铁基复合析氧催化剂。采用CH660E电化学工作站对催化剂进行电化学测试,发现S2催化剂优于其他催化剂的析氧反应活性,过电位η10达到230 mV,比对照组S0降低17.8%,稳定电流密度提高了110.45%,达到15.3 mA/cm^(2),转移电阻值降低16%。通过SEM形貌观察,EDS元素分析,HR-TEM观察其表面形态,研究了这种SiO_(2)-镍铁基复合析氧催化剂表面材料形态及分布对其电催化性能的影响。In recent years,it was received much more attention that electro-catalysis hydrogen production and oxygen evolution in clean energy production and efficient energy storage.Catalysts composed of nickel and iron had abundant raw materials,low price and excellent catalytic performance,and it was widely used as catalysts for electrolytic water oxygen evolution reaction.In order to improve the activity and stability of the nickel-iron base catalyst,the foam nickel sheet as the conductive base material,hydrothermal synthesis method was used on its surface in-situ synthesis of nickel-iron base oxygen evolution catalyst,and then made SiO_(2)film material on the surface,so SiO_(2)-Nickel-Ferri-Based composite oxygen evolution catalyst was obtained.CH660E electrochemical workstation was used to perform electrochemical tests on the catalyst.It was found that the oxygen evolution activity of S2 catalyst was better than that of other catalysts,the over potentialη10 reached 230 mV,17.8%lower than the group S0,and the stable current density increased by 110.45%,which was up to 15.3 mA/cm 2.Meanwhile,the transfer resistance of S2 was 16%lower than that of S0.The surface morphology of the catalyst was observed by SEM,EDS elemental analysis and HR-TEM.It was studied that the influence of surface material morphology and distribution on the electro catalytic performance of the catalyst.

关 键 词：SiO_(2)复合催化剂 镍铁基 电解水制氢 析氧反应 

分 类 号：TK91[动力工程及工程热物理]