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Scalable non-liquid-crystal spinning of locally aligned graphene fibers for high-performance wearable supercapacitors
Chen, Shaohua; Ma, Wujun; Cheng, Yanhua; Weng, Zhe; Sun, Bin; Wang, Lu; Chen, Wenping; Li, Feng; Zhu, Meifang; Cheng, Hui-Ming; zhumf@dhu.edu.cn; cheng@imr.ac.cn
2015
发表期刊NANO ENERGY
ISSN2211-2855
卷号15页码:642-653
摘要One-dimensional graphene fibers have attracted increasing interests due to their extraordinary mechanical strength, electrical conductivity and flexibility compared with two-dimensional graphene films/papers and three-dimensional foams/hydrogels/aerogels. Here, we developed a scalable non-liquid-crystal spinning process for the production of continuous graphene fibers with tailored structure for high-performance wearable supercapacitors. These fibers possessed surfaces with bark-like fine microstructure and different shaped cross-sections with locally aligned dense pores, depending on the jet stretch ratio (R) during spinning. Owing to this unique structure facilitating the access to, and diffusion of electrolyte ions, the specific capacitance reached 279 F g(-1) (340 F cm(-3)) at a current density of 0.2 A g(-1) (0.244 A cm(-3)) in 1 M H2SO4 when R = 1.0. A flexible solid-state fiber supercapacitor assembled from these fibers showed a specific capacitance and energy density of 226 F cm(-3) and 7.03 mWh cm(-3) at 0.244 A cm(-3), respectively. We further demonstrated the proof-of-concept of wearable energy-storage by sewing three solid-state yarn supercapacitors in series into a textile, which was able to power a light-emitting diode for more than 5 min after being charged. This non-liquid-crystal spinning strategy could be extended to the assembly of other two-dimensional nanomaterials into macroscopic fibers for applications in micro-devices, wearable electronics and smart textile. (C) 2015 Elsevier Ltd. All rights reserved.
部门归属[chen, shaohua ; ma, wujun ; cheng, yanhua ; sun, bin ; wang, lu ; chen, wenping ; zhu, meifang] donghua univ, coll mat sci & engn, state key lab modificat chem fibers & polymer mat, shanghai 201620, peoples r china ; [weng, zhe ; li, feng ; cheng, hui-ming] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china
关键词Graphene Fibers Liquid Crystals Wet Spinning Wearable Supercapacitors
资助者Natural Science Foundation of China [51273040]; Program for Changjiang Scholars and Innovative Research Team in University [T2011079, IRT1221]; National Natural Science Foundation for Distinguished Young Scholar of China [50925312]; Shanghai Nano Special Projects [11nm0500100]; Program of Introducing Talents of Discipline to Universities in China [111-2-04]
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75105
专题中国科学院金属研究所
通讯作者zhumf@dhu.edu.cn; cheng@imr.ac.cn
推荐引用方式
GB/T 7714
Chen, Shaohua,Ma, Wujun,Cheng, Yanhua,et al. Scalable non-liquid-crystal spinning of locally aligned graphene fibers for high-performance wearable supercapacitors[J]. NANO ENERGY,2015,15:642-653.
APA Chen, Shaohua.,Ma, Wujun.,Cheng, Yanhua.,Weng, Zhe.,Sun, Bin.,...&cheng@imr.ac.cn.(2015).Scalable non-liquid-crystal spinning of locally aligned graphene fibers for high-performance wearable supercapacitors.NANO ENERGY,15,642-653.
MLA Chen, Shaohua,et al."Scalable non-liquid-crystal spinning of locally aligned graphene fibers for high-performance wearable supercapacitors".NANO ENERGY 15(2015):642-653.
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