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Open AccessArticle

Starch as a Green Binder for the Formulation of Conducting Glue in Supercapacitors

1
Institute of Chemistry and Technical Electrochemistry, Poznan University of Technology, Berdychowo 4, 60-965 Poznań, Poland
2
Institute of Food Technology of Plant Origin, Poznań University of Life Sciences, 31 Wojska Polskiego St., 60-624 Poznań, Poland
*
Author to whom correspondence should be addressed.
Polymers 2019, 11(10), 1648; https://doi.org/10.3390/polym11101648
Received: 18 September 2019 / Revised: 7 October 2019 / Accepted: 9 October 2019 / Published: 11 October 2019
This work describes the use of commercially available starch as a binder for the preparation of conductive glue and electrode materials. It is demonstrated that starch can be successfully implemented as a binder in energy storage systems with non-aqueous electrolytes. These devices are characterized by a stable cycle life (for 50,000 cycles) at a nominal voltage of 2.5 V. Moreover, the use of starch-based conductive glue improves the electrochemical performance, especially reducing the internal resistance of the device. Starch-bound electrodes display lower equivalent distributed resistance (EDR) values than electrodes using carboxymethylcellulose (CMC) as the binder. This is due to the noticeably lower pore clogging by starch. An electric double-layer capacitor (EDLC) in organic electrolyte (1 mol L−1 TEABF4 in ACN) at a nominal voltage of 2.5 V can reach a specific power and energy of 100 kW kg−1 and 12 Wh kg −1, respectively. This study shows that starch-based conductive glues and electrode materials can be incorporated in EDLC systems. View Full-Text
Keywords: binder; charge propagation; eco-friendly; energy storage binder; charge propagation; eco-friendly; energy storage
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MDPI and ACS Style

Jeżowski, P.; Kowalczewski, P.Ł. Starch as a Green Binder for the Formulation of Conducting Glue in Supercapacitors. Polymers 2019, 11, 1648.

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