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现代化工  2020, Vol. 40 Issue (6): 95-97    DOI: 10.16606/j.cnki.issn0253-4320.2020.06.020
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
小尺寸SiC的制备及其电化学析氢性能研究
白改玲1,2, 童希立2
1. 太原工业学院材料工程系, 山西 太原 030008;
2. 中国科学院山西煤炭化学研究所, 煤转化国家重点实验室, 山西 太原 030001
Preparation of small size SiC and study on its performance in electrochemical hydrogen evolution
BAI Gai-ling1,2, TONG Xi-li2
1. Department of Materials Engineering, Taiyuan Institute of Technology, Taiyuan 030008, China;
2. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry of Chinese Academy of Sciences, Taiyuan 030001, China
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摘要 将SiC纳米材料在浓酸中加热腐蚀制备得到小尺寸SiC颗粒,并在其上电沉积Pt后制备得到Pt/SiC复合材料。利用X射线衍射仪、透射电子显微镜和电化学测试等手段对复合材料的组成、结构和电化学性能进行表征。结果表明,SiC-4颗粒直径为几nm左右,具有较好的自催化析氢性能,Pt/SiC-4具有优异的HER性能;电流密度为10 mA/cm2时的过电位为75 mV,电流密度为100 mA/cm2时的过电位为212 mV,Tafel值为37.57 mV/dec,双层电容值为1.56 mF/cm2
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白改玲
童希立
关键词:  SiC  小尺寸  电化学析氢    
Abstract: SiC nano-materials are heated and etched in concentrated acid to obtain small size SiC particles.Pt/SiC composites are prepared by electrodepositing Pt on SiC nano-materials.Composition,structure and electrochemical properties of the composites are characterized by X-ray diffraction,transmission electron microscopy and electrochemical measurements.The results show that SiC-4 particles have a diameter around several nanometers and a good autocatalytic hydrogen evolution performance.Pt/SiC-4 has excellent performance of hydrogen evolution reaction (HER),with an over-potential of 75 mV at a current density of 10 mA·cm-2,and an over-potential of 212 mV at 100 mA cm-2.Tafel value of Pt/SiC-4 is 37.57 mV·dec-1,and the double-layer capacitance value is 1.56 mF·cm-2.
Key words:  SiC    small size    electrochemical hydrogen evolution
收稿日期:  2019-08-19      修回日期:  2020-04-07          
ZTFLH:  TQ152  
基金资助: 国家自然科学基金联合基金资助项目(U1710112)
通讯作者:  童希立(1979-),男,博士,副研究员,研究方向为光电催化,通讯联系人,tongxili@sxicc.ac.cn。    E-mail:  tongxili@sxicc.ac.cn
作者简介:  白改玲(1986-),女,博士,讲师,研究方向为光电催化,baigailing86@163.com
引用本文:    
白改玲, 童希立. 小尺寸SiC的制备及其电化学析氢性能研究[J]. 现代化工, 2020, 40(6): 95-97.
BAI Gai-ling, TONG Xi-li. Preparation of small size SiC and study on its performance in electrochemical hydrogen evolution. Modern Chemical Industry, 2020, 40(6): 95-97.
链接本文:  
https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2020.06.020  或          https://www.xdhg.com.cn/CN/Y2020/V40/I6/95
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