自支撑多孔硅/ZnO复合材料的制备及其超级电容特性

邢正伟; 沈鸿烈; 唐群涛; 姚函妤; 杨楠楠

doi:10.13801/j.cnki.fhclxb.20151216.002

自支撑多孔硅/ZnO复合材料的制备及其超级电容特性

南京航空航天大学材料科学与技术学院, 江苏省能量转换材料与技术重点实验室, 南京 210016

基金项目: 国家自然科学基金（61176062）；中央高校基本科研业务费专项资金（3082015NJ20150024）；江苏省前瞻性联合创新项目（BY2013003-08）；江苏高校优势学科建设工程

详细信息

通讯作者:
沈鸿烈, 博士, 教授, 博士生导师, 研究方向为光电薄膜材料及器件。 E-mail: hlshen@nuaa.edu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2015-08-15
- 修回日期: 2015-11-24
- 刊出日期: 2016-09-14

Preparation of freestanding porous silicon/ZnO composites and its supercapacitor property

Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Materials Science & Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

摘要

摘要: 首先利用二步阳极氧化法制备了自支撑多孔硅，再利用真空抽滤法在自支撑多孔硅中沉积ZnO纳米籽晶层，最后用水热合成法使ZnO纳米籽晶进一步长大。采用扫描电子显微镜、X射线能谱分析和光致发光谱分析对样品的形貌、元素及发光性能进行了表征。结果表明：自支撑多孔硅内部成功填充了ZnO纳米颗粒并形成了自支撑多孔硅/ZnO复合材料。将这种复合材料作为超级电容器电极进行了电化学测试，包括循环伏安、阻抗谱和恒电流充放电测试，该复合材料有较好的超级电容特性，比容量可达到15.7 F/g，相比于自支撑多孔硅提高120倍。
- 自支撑多孔硅 /
- ZnO纳米颗粒 /
- 真空抽滤 /
- 光致发光 /
- 超级电容器
Abstract: Two step anodic oxidation method was firstly used to prepare freestanding porous silicon. Then ZnO nanocrystal layer was deposited in the freestanding porous silicon using vacuum filtration method and hydro-thermal synthesis approach was used for further growth of ZnO nanocrystals finally. The morphology, element and luminescence properties of the samples were characterized by scanning electron microscope, X-ray energy dispersive spectrum analysis and photoluminence spectrum analysis. The results show that ZnO nanoparticles exist in the freestanding porous silicon and porous silicon/ZnO composites form successfully. Moreover, the electrochemical tests of the composites as a supercapacitor electrode was conducted by cyclic voltamerty, impendance spectrum and galvanostatic charge/discharge tests. The composites have good supercapacitor property. The specific capacitances can reach 15.7 F/g, with an increase of 120 times compared with the freestanding porous silicon.
- freestanding porous silicon /
- ZnO nanopaticles /
- vacuum filtration /
- photoluminence /
- supercapacitor