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Tragacanth Gum as Green Binder for Sustainable Water-Processable Electrochemical Capacitor

Scalia, A.; Zaccagnini, P.; Armandi, M.; Latini, G.; Versaci, D.; Lanzio, V.; Varzi, Alberto 1; Passerini, Stefano 1; Lamberti, A.
1 Karlsruher Institut für Technologie (KIT)

Enabling green fabrication processes for energy storage devices is becoming a key aspect in order to achieve a sustainable fabrication cycle. Here, the focus was on the exploitation of the tragacanth gum, an exudated gum like arabic and karaya gums, as green binder for the preparation of carbon‐based materials for electrochemical capacitors. The electrochemical performance of tragacanth (TRGC)‐based electrodes was thoroughly investigated and compared with another water‐soluble binder largely used in this field, sodium‐carboxymethyl cellulose (CMC). Apart from the higher sustainability both in production and processing, TRGC exhibited a lower impact on the obstruction of pores in the final active material film with respect to CMC, allowing for more available surface area. This directly impacted the electrochemical performance, resulting in a higher specific capacitance and better rate capability. Moreover, the TRGC‐based supercapacitor showed a superior thermal stability compared with CMC, with a capacity retention of about 80 % after 10000 cycles at 70 °C.

Verlagsausgabe §
DOI: 10.5445/IR/1000127690
Veröffentlicht am 08.02.2021
DOI: 10.1002/cssc.202001754
Zitationen: 7
Web of Science
Zitationen: 7
Zitationen: 6
Cover der Publikation
Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 07.01.2021
Sprache Englisch
Identifikator ISSN: 1864-5631, 1864-564X
KITopen-ID: 1000127690
HGF-Programm 37.01.01 (POF III, LK 01) Fundamentals and Materials
Erschienen in ChemSusChem
Verlag Wiley-VCH Verlag
Band 14
Heft 1
Seiten 356-362
Vorab online veröffentlicht am 23.10.2020
Nachgewiesen in Web of Science
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