金属有机框架衍生非晶态硫化钴及电催化分解水性能  

Amorphous Cobalt Sulfide Derived From Metal⁃Organic Framework and Its Water Splitting Properties

作　　者：余凡[1] 胡冰倩 熊芯 鲁望婷 李宝[2] YU Fan;HU Bing-Qian;XIONG Xin;LU Wang-Ting;LI Bao(Key Laboratory of Optoelectronic Chemical Materials and Devices(Ministry of Education),School of Chemical and Environmental Engineering,Jianghan University,Wuhan 430056,China;School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]江汉大学化学与环境工程学院,光电化学材料与器件教育部重点实验室,武汉430056 [2]华中科技大学化学与化工学院,武汉430074

出　　处：《无机化学学报》2020年第10期1873-1880,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21971078);湖北省科技计划(No.2019CFB769)资助项目。

摘　　要：利用含氮配体制备了新型钴基金属有机框架,以其为模板通过改变硫源种类、硫化时间及硫化温度,制备了系列无定型硫化钴样品,结合各种结构表征及电化学性能测试表明:以硫化钠为硫源,控制硫化温度及硫化时间分别为60℃、6 h时,得到的样品在1.0 mol·L^-1 KOH溶液且电流密度在10 mA·cm^-2时,析氢反应和析氧反应的过电位分别为178和246 mV,并表现出优异的耐久性。Herein,we report the preparation of amorphous cobalt sulfide electrode materials using MOF as template and its application in electrocatalytic decomposition of water.Firstly,a new cobalt-based metal-organic framework was prepared by using nitrogen-containing system.Then,a series of amorphous cobalt sulfide samples were prepared by changing curing time,temperature and sulfur sources,such as sodium sulfide and thioacetamide.The materials were characterized by powder X-ray diffraction,scanning electron microscope,X-ray photoelectron spectroscopy and infrared spectra,and their structural characteristics were explained.The electrolysis performance of each sample was characterized in detail,and the structure-activity relationship of each system was established.Combined with various structural characterization and electrochemical performance tests,it was found that when the sulfuration temperature and sulfuration time were controlled to 60℃and 6 h,respectively,the related samples exhibited the hydrogen evolution reaction and oxygen evolution reaction potential of 178 and 246 mV when the current density was 10 mA·cm^-2 in 1.0 mol·L^-1 KOH solution,along with the excellent durability.CCDC:2010582.

关 键 词：金属有机框架 硫化钴 氢能 电解水 

分 类 号：O614.812[理学—无机化学]