泡沫镍负载楮实子状硫化镍用于高效析氧反应  

Fructus Broussonetiat-like Nickel Sulfide Supported on Ni Foam as Efficient Electrocatalyst for Oxygen Evolution Reaction

作　　者：吴方 芦许娜 丁梦圆 方宇 侯永琪 高慧花 WU Fang;LU Xv-na;DING Meng-yuan;Fang Yu;Hou Yong-qiu;Gao Hui-hua(School of Material and Chemical Engineering,Bengbu 233030,China;b.Anhui Provincial Engineering Laboratory of Silicon-based Materials,Bengbu 233030,China)

机构地区：[1]蚌埠学院材料与化学工程学院,安徽蚌埠233030 [2]蚌埠学院安徽省硅基新材料工程实验室,安徽蚌埠233030

出　　处：《南宁师范大学学报（自然科学版）》2022年第3期27-32,共6页Journal of Nanning Normal University：Natural Science Edition

基　　金：蚌埠学院高水平科研培育项目(2021pyxm08);蚌埠学院高层次人才科研启动项目(BBXY2021KYQD04)。

摘　　要：采用水热方法在导电基底泡沫镍上生长海胆状氢氧化镍,并以其为前驱物,采用水热硫化方法将其转变为楮实子状硫化镍。硫化时间影响硫化程度,进而影响硫化镍的结构和析氧活性。水热硫化6小时获得的硫化镍能够最大程度发挥NiS和Ni 3 S 2的协同效应,从而表现出最佳的析氧活性。在1 mol/L KOH的电解液中,达到10 mA/cm^(2)和100 mA/cm^(2)的电流密度所需的过电势分别为288 mV和376 mV,Tafel斜率为75 mV/dec;且持续电解10小时,析氧性能基本无衰减。Sea urchin-like nickel hydroxide precursor first directly grow on NF conductive substrate.Then,the obtained precursor isin situ transformed into Fructus Broussonetiat-like Nickel Sulfide.The sulfurization time effects the sulfurization degree of Ni hydroxide precursor,thus it may affect the electronic structure of nickel sulfide and its OER performance.Nickel sulfide is obtained by sulfurization for 6 h,which can maximize the synergy between the NiS and Ni_(3)S_(2),and it shows outstanding OER performance.It delivers with overpotentials of 288 and 376 mV at 10 and 100 mA/cm^(2),a Tafel slope of 75 mV/dec,and operation for 10 h with negligible decay.

关 键 词：析氧反应 硫化镍 电催化 水热制备 

分 类 号：TQ426[化学工程] TB383.1[一般工业技术—材料科学与工程]