Nitrogen-and Oxygen-Containing Porous Ultrafine Carbon Nanofiber:A Highly Flexible Electrode Material for Supercapacitor
Nitrogen-and Oxygen-Containing Porous Ultrafine Carbon Nanofiber:A Highly Flexible Electrode Material for Supercapacitor作者机构:College of Textile and Clothing EngineeringSoochow UniversitySuzhou215021China Nano Fusion Technology Research GroupDivision of Frontier FibersInstitute for Fiber Engineering(IFES)Interdisciplinary Cluster for Cutting Edge Research(ICCER)Shinshu UniversityTokida 3-15-1UedaNagano Prefecture386-8567Japan Department of Fiber System EngineeringDankook UniversityYoungin 448-701Republic of Korea Department of Clothing&TextilesPaiChai UniversityDaejeon 302-735Republic of Korea Department of Metallurgical EngineeringPukyong National UniversityBusan 608-739Republic of Korea Department of Clothing and TextilesChungnam National UniversityDaejeon 305-764Republic of Korea
出 版 物:《Journal of Materials Science & Technology》 (材料科学技术(英文版))
年 卷 期:2017年第33卷第5期
页 面:424-431页
核心收录:
学科分类:080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程(可授工学、理学学位)] 080502[工学-材料学]
基 金:supported by a research fund of Chungnam National University in 2014
主 题:Carbon fiber Porosity Electron microscopy Surface analysis Supercapacitor
摘 要:Herein, we report a simple and effective preparation of ultrafine CNFs (u-CNFs) with high surface area via electrospinning of two immiscible polymers [polyacrylonitrile (PAN) and poly(methyl methacry- late) (PMMA)] followed by calcination at high temperature in an inert atmosphere. Various electrospinning conditions were optimized in detail. Four different kinds of PAN/PMMA ratios (10/0, 7:3, 5:5 and 3:7) were chosen and found that the PAN/PMMA ratio of 3:7 (PAN/PMMA-3:7) is the optimum one. BET anal- ysis showed the specific surface area of the u-CNFs-3:7 was 46Z57 m2/g with an excellent pore volume (1.15 cms g-l) and an average pore size (9.48 nm): it is about 25 times higher than the conventional CNFs (c-CNFs). TEM and FE-SEM images confirmed the ultrafine structure of the CNFs with a thinner fiber di- ameter of-50 nm. The graphitic nature and atomic arrangement of the u-CNFs were investigated by Raman and XPS analyses. For the supercapacitor application, unlike the common electrode preparation methods, the u-CNFs-3:7 was used without any activation, chemical or mechanical modifications. The u-CNFs- 3:7 showed a better specific capacitance of 86 Fig in 1 mol/L 1-12S04 when compared to pure CNFs. The excellent physicochemical properties make the u-CNFs-3:7 an alternative choice to the existing CNFs for the supercapacitors.