| 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 | |
| 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。 | |
| 关键词: 金属有机框架 硫化钴 氢能 电解水 | |
| 基金项目: 国家自然科学基金（No.21971078）和湖北省科技计划（No.2019CFB769）资助项目 | |
| Abstract: 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. | |
| Keywords: metal-organic framework cobalt sulfide hydrogen energy water electrolysis | |
| 投稿时间：2020-03-29 修订日期：2020-08-28 | |
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| 余凡,胡冰倩,熊芯,鲁望婷,李宝.金属有机框架衍生非晶态硫化钴及电催化分解水性能[J].无机化学学报,2020,36(10):1873-1880. | |
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