Graphene-Cellulose Paper Flexible Supercapacitors

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	Graphene-Cellulose Paper Flexible Supercapacitors
	Z. Weng ; Y. Su ; D. W. Wang ; F. Li ; J. H. Du ; H. M. Cheng
刊名	Advanced Energy Materials
	2011
卷号	1 期号:5 页码:917-922
关键词	carbon-nanotube electrodes gel polymer electrolytes double-layer capacitors energy-storage devices lithium batteries composite films performance
ISSN号	1614-6832
中文摘要	A simple and scalable method to fabricate graphene-cellulose paper (GCP) membranes is reported; these membranes exhibit great advantages as freestanding and binder-free electrodes for flexible supercapacitors. The GCP electrode consists of a unique three-dimensional interwoven structure of graphene nanosheets and cellulose fibers and has excellent mechanical flexibility, good specific capacitance and power performance, and excellent cyclic stability. The electrical conductivity of the GCP membrane shows high stability with a decrease of only 6% after being bent 1000 times. This flexible GCP electrode has a high capacitance per geometric area of 81 mF cm(-2), which is equivalent to a gravimetric capacitance of 120 F g(-1) of graphene, and retains >99% capacitance over 5000 cycles. Several types of flexible GCP-based polymer supercapacitors with various architectures are assembled to meet the power-energy requirements of typical flexible or printable electronics. Under highly flexible conditions, the supercapacitors show a high capacitance per geometric area of 46 mF cm(-2) for the complete devices. All the results demonstrate that polymer supercapacitors made using GCP membranes are versatile and may be used for flexible and portable micropower devices.
原文出处	://WOS:000295140100029
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30772]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Weng,Y. Su,D. W. Wang,et al. Graphene-Cellulose Paper Flexible Supercapacitors[J]. Advanced Energy Materials,2011,1(5):917-922.
APA	Z. Weng,Y. Su,D. W. Wang,F. Li,J. H. Du,&H. M. Cheng.(2011).Graphene-Cellulose Paper Flexible Supercapacitors.Advanced Energy Materials,1(5),917-922.
MLA	Z. Weng,et al."Graphene-Cellulose Paper Flexible Supercapacitors".Advanced Energy Materials 1.5(2011):917-922.