Graphene-cellulose paper flexible supercapacitors

Weng, Zhe, Su, Yang, Wang, Da-Wei, Li, Feng, Du, Jinhong and Cheng, Hui-Ming (2011) Graphene-cellulose paper flexible supercapacitors. Advanced Energy Materials, 1 5: 917-922. doi:10.1002/aenm.201100312

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Author Weng, Zhe
Su, Yang
Wang, Da-Wei
Li, Feng
Du, Jinhong
Cheng, Hui-Ming
Title Graphene-cellulose paper flexible supercapacitors
Journal name Advanced Energy Materials   Check publisher's open access policy
ISSN 1614-6832
Publication date 2011-10-01
Sub-type Article (original research)
DOI 10.1002/aenm.201100312
Open Access Status Not yet assessed
Volume 1
Issue 5
Start page 917
End page 922
Total pages 6
Place of publication Weinheim, Germany
Publisher Wiley - VCH Verlag
Language eng
Formatted abstract
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.
Keyword Carbon-nanotube electrodes
Gel polymer electrolytes
Double-layer capacitors
Energy-storage devices
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
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Citation counts: TR Web of Science Citation Count  Cited 420 times in Thomson Reuters Web of Science Article | Citations
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Created: Sun, 16 Oct 2011, 10:21:52 EST by System User on behalf of Functional Nanomaterials