具有同轴结构的基于石墨烯的单纤维超级电容器。

Graphene-based single fiber supercapacitor with a coaxial structure.

作者信息

Zhao Xiaoli, Zheng Bingna, Huang Tieqi, Gao Chao

机构信息

MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China.

出版信息

Nanoscale. 2015 Jun 7;7(21):9399-404. doi: 10.1039/c5nr01737h.

DOI:10.1039/c5nr01737h

PMID:25947070

Abstract

A novel all graphene coaxial fiber supercapacitor (GCS) was fabricated, consisting of a continuously wet-spun core graphene fiber and facilely dip-coated graphene sheath. GCS is flexible, lightweight and strong, and is also accompanied by a high specific capacitance of 205 mF cm(-2) (182 F g(-1)) and high energy density of 17.5 μW h cm(-2) (15.5 W h kg(-1)). The energy density was further improved to 104 μW h cm(-2), when an organic ion liquid electrolyte was used.

摘要

制备了一种新型全石墨烯同轴纤维超级电容器（GCS），它由连续湿法纺丝的核心石墨烯纤维和简便浸涂的石墨烯鞘层组成。GCS具有柔韧性、轻质且坚固的特点，同时还具有205 mF cm(-2)（182 F g(-1)）的高比电容和17.5 μW h cm(-2)（15.5 W h kg(-1)）的高能量密度。当使用有机离子液体电解质时，能量密度进一步提高到104 μW h cm(-2)。