NiO-FeS纳米复合材料的电沉积与电催化水分解性能  

The Electrodeposition of NiO-FeS Nanocomposites and Their Performance of Electrocatalytic Water Splitting

作　　者：范厚强 李来胜[1] 李旭凯[1] 王静[1] FAN Houqiang;LI Laisheng;LI Xukai;WANG Jing(School of Environment/MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou 510006, China)

机构地区：[1]华南师范大学环境学院/环境化学教育部重点实验室,广州510006

出　　处：《华南师范大学学报（自然科学版）》2022年第3期15-21,共7页Journal of South China Normal University(Natural Science Edition)

基　　金：广东省基础与应用基础研究基金项目(2019A1515110945)。

摘　　要：采用电沉积法在镍网(NF)基底上原位合成了氧化镍/硫化铁(NiO-FeS@NF)纳米复合材料,用于提高电解水效率。采用扫描电镜(SEM)、透射电镜(TEM)、能量色散X射线谱(EDS)和X射线光电子能谱(XPS)等分析NiO-FeS的表面形貌和化学组分。结果表明:NiO-FeS呈明显的二维片状结构,主要由FeS和NiO组成,两者形成了有效的异质结。直接采用NiO-FeS@NF工作电极进行电催化析氧反应(OER),可提升电催化析氧性能。二维片状结构能够提供较大的比表面积和较多的活性位点,NiO-FeS界面处的电子转移速度加快。该研究可为高效纳米催化剂的制备提供一条便利且廉价的途径。The electrodeposition technology was used to in situ synthesize NiO-FeS nanocomposites on nickel foam(NF)substrate to improve the efficiency of electrocatalytic water splitting.SEM,TEM,EDS and XPS characterizations were adopted to explore the surface morphology and chemical composition of the as-obtained materials.It was demonstrated that the nanocomposites mainly consisted of FeS and NiO with an obvious two-dimensional sheet-like structure and a well-defined heterojunction was formed between the two constituents.The NiO-FeS@NF nanocomposites were directly used as the working electrode for electrocatalytic oxygen evolution reactions(OER)to enhance the catalytic activity.The two-dimensional structure could provide a large surface area and abundant active sites,which facilitated the electron transfer process at the NiO-FeS interface.This study may offer a convenient and inexpensive access to the fabrication of efficient nanocatalysts.

关 键 词：电沉积 析氧反应 水分解 电催化 

分 类 号：O646[理学—物理化学] TB332[理学—化学]