more>>在线期刊
more>>新闻发布
more>>相关下载
友情连接

Ag@SiO2微米结构的显微表征以及电化学性能研究

贾苗苗，王振宇，张晓娜*，谢立林，李 晖，张跃飞，张 泽
  • 摘要
  • 参考文献
  • 相关文章

2015年 第34卷 第5期: -1000-6281(2015)05-0367-04     下载地址：

Ag@SiO2微米结构的显微表征以及电化学性能研究

贾苗苗1，王振宇1，张晓娜1*，谢立林1，李 晖1，张跃飞1，张 泽2

( 1.北京工业大学固体微结构与性能研究所，北京 100124；2. .浙江大学电子显微镜中心，材料科学与工程学院，硅材料国家重点实验室，浙江 杭州 310027)

摘 要：近年来，作为新型储能器件的超级电容器受到人们的普遍关注，而对超级电容器的研究主要集中在电极材料上。本文通过共蒸发Ag2O和SiO粉末的方法，在泡沫Ni基底上合成微米量级Ag@SiO2。利用SEM、EDS和XRD对样品显微结构进行了表征。通过循环伏安法以及恒流密度充放电测试了材料的电化学性能。实验结果表明：该材料作为新型的电极材料具有一定的稳定性和氧化还原可逆性；在0.05 A·g-1的充放电电流密度下比容量达到144 F·g-1；在电流密度为0.2 A·g-1时，比容量为105F·g-1，是初始比容量的73.03％。本文结果为该材料的制备、应用开发提供参考与依据。

关键词：Ag@SiO2；显微表征；电极材料；超级电容器

中图分类号：TM53；TG146.3+2；TG115.21+5.3；TG115.23      文献标识码：A   doi:10.3969/j.issn.1000-6281.2015.05.002

 

The microstructure characterization and electrochemical properties of micronAg@SiO2materials

JIA Miao-miao1, WANG Zhen-yu1, ZHANG Xiao-Na1*, XIE Li-lin1, LI Hui1, ZHANG Yue-fei1, ZHANG Ze2

(1.Beijing University of Technology, Institute of Microstructure and Properties of Advanced Material, Beijing 100124；

2. Department of Material Science and Engineering, State Key Laboratory of Silicon Materials，Zhejiang University, Hangzhou Zhejiang 310027，China)

Abstract: As a new energy storage device, supercapacitor has been widely concerned in recent years. Most investigations were focusedon the electrode materials because thecapacitancewas depend on the selection of the electrode materials. In this paper, the Ag@SiO2 micron structures were synthesized through thermal co-evaporation of Ag2O and SiO powders on the foam Ni substrate. SEM, EDS and XRD were used to characterize the microstructure of the samples. The electrochemical performance of materials was measured by cyclic voltammetry and galvanostatic tests. The material delivered specific capacititance of 144F·g-1at current density of 0.05 A·g-1 and still maintained 105 F·g-1 at current density of 0.2 A·g-1, whose specific capacity was 73.03% of the initial specific capacity. It is a kind of new electrode materials and has good performance of supercapacitor.

Keywords：Ag@SiO2；microstructure；supercapacitor；electrode materials

 

全文下载请到中国知网、万方数据或重庆维普等数据库中下载！！