Natural, cheap and environmentally friendly binder for supercapacitors

In this work we report the use of natural cellulose as the binder for composite electrodes for electrochemical double-layer capacitors (EDLCs). Composite electrodes containing natural cellulose as the binder can be prepared using either ionic liquid based slurries or aqueous suspensions containing a...

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Bibliographic Details
Published in:Journal of power sources 2013-01, Vol.221, p.14-20
Main Authors: Böckenfeld, N., Jeong, S.S., Winter, M., Passerini, S., Balducci, A.
Format: Article
Language:English
Subjects:
Applied sciences
Capacitors. Resistors. Filters
Cellulose
Electrical engineering. Electrical power engineering
Exact sciences and technology
H2O
Materials
Supercapacitors
Various equipment and components
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Summary:In this work we report the use of natural cellulose as the binder for composite electrodes for electrochemical double-layer capacitors (EDLCs). Composite electrodes containing natural cellulose as the binder can be prepared using either ionic liquid based slurries or aqueous suspensions containing a polymeric stabilizer and a surfactant. These composite electrodes display good mechanical stability, uniform morphology and a thermal stability comparable to those made with conventional binders. Moreover, when used as electrodes in EDLCs, they allow the realization of devices able to display high performance in term of specific capacitance and cycling stability in all type of electrolytes used in EDLCs. Considering the appealing properties of natural cellulose, the introduction of this material as a binder in EDLCs could be an important contribution for the development of cheap, safe and environmentally friendly EDLCs. [Display omitted] ► Natural cellulose can be used as binder in supercapacitors. ► Cellulose-based electrodes display thermal stabilities comparable to those of conventional electrodes. ► Cellulose-based electrodes can be successfully used in all type of electrolytes.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2012.07.076