四种晶型MnO2超级电容器电极材料的电化学性能研究

CORC > 厦门大学 > 2015年第21卷

	四种晶型MnO2超级电容器电极材料的电化学性能研究; An Investigation on Electrochemical Performance of Supercapacitor Electrode Materials Prepared by MnO2 with four Different Crystal Forms
	危震坤 ; 华小珍 ; 肖可 ; 周贤良 ; 叶志国 ; WEI Zhen-Kun ; HUA Xiao-Zhen ; XIAO Ke ; ZHOU Xian-Liang ; YE Zhi-Guo
刊名	http://electrochem.xmu.edu.cn/CN/abstract/abstract10182.shtml
	2015-08-28
关键词	超级电容器二氧化锰晶型循环伏安恒流充放电 supercapacitor manganese dioxide crystal structure cyclic voltammetry analysis
英文摘要	用尽量简便的方法制备出δ、α、β及γ型4种MnO2粉末. 通过X射线衍射（XRD）、场发射扫描电镜（FSEM）、热重分析（TGA）与比表面积测试（BET）等方法对样品粉末性质进行分析，并对4种不同粉末制成的电极进行循环伏安、恒流充放电及稳定性测试. 结果表明，4种MnO2都具有良好的电容特性，其中α-MnO2具有最高的比表面积与孔隙率，故其电极比容量最高，但其大电流放电时的倍率特性较差. 其余3种MnO2比表面积相当，而β-MnO2虽然比容量较低，但其简单的孔隙结构使其拥有最好的倍率特性与稳定性.; Four types of α-MnO2, β-MnO2, γ-MnO2 and δ-MnO2 powders were synthesized by relatively simple methods. The differences in crystal structures and surface morphologies for these forms of MnO2 were investigated by using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA) and specific surface area analysis (BET). The electrochemical performances were characterized by cyclic voltammetry (CV) and stability analysis. Based on the experimental results, four kinds of MnO2 electrodes showed good capacity properties, and the α-MnO2 electrode had the largest specific capacity due to the highest specific surface area and porosity. The remaining three types of MnO2 electrodes had similar specific surface areas, and the β-MnO2 electrode had better rate discharge property and stability due to its lower developed pore structure.; 国家自然科学资金(No. 21103085)及江西省教育厅科技落地计划项目(No. DB201101397); 作者联系地址：南昌航空大学材料科学与工程学院，江西南昌 310063; Author's Address: School of Material Science and Engineering, Nanchang Hangkong University, Nanchang 330063, P. R. China; 通讯作者E-mail：noah19910901@163.com
语种	中文
出版者	厦门大学《电化学》编辑部
内容类型	期刊论文
源URL	[http://dx.doi.org/10.13208/j.electrochem.150408]
专题	2015年第21卷
推荐引用方式 GB/T 7714	危震坤,华小珍,肖可,等. 四种晶型MnO2超级电容器电极材料的电化学性能研究, An Investigation on Electrochemical Performance of Supercapacitor Electrode Materials Prepared by MnO2 with four Different Crystal Forms[J]. http://electrochem.xmu.edu.cn/CN/abstract/abstract10182.shtml,2015.
APA	危震坤.,华小珍.,肖可.,周贤良.,叶志国.,...&YE Zhi-Guo.(2015).四种晶型MnO2超级电容器电极材料的电化学性能研究.http://electrochem.xmu.edu.cn/CN/abstract/abstract10182.shtml.
MLA	危震坤,et al."四种晶型MnO2超级电容器电极材料的电化学性能研究".http://electrochem.xmu.edu.cn/CN/abstract/abstract10182.shtml (2015).