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Physical, Chemical, and Electrochemical Properties of Redox-Responsive Polybenzopyrrole as Electrode Material for Faradaic Energy Storage

Begum, Bushra; Bilal, Salma 1; Shah, Anwar ul Haq Ali; Röse, Philipp ORCID iD icon 1
1 Center for Electrochemical Energy Storage Ulm & Karlsruhe (CELEST), Karlsruher Institut für Technologie (KIT)


Polybenzopyrrole (Pbp) is an emerging candidate for electrochemical energy conversion and storage. There is a need to develop synthesis strategies for this class of polymers that can help improve its overall properties and make it as suitable for energy storage applications as other well-studied polymers in this substance class, such as polyaniline and polypyrrole. In this study, by synthesizing Pbp in surfactant-supported acidic medium, we were able to show that the physicochemical and electrochemical properties of Pbp-based electrodes are strongly influenced by the respective polymerization conditions. Through appropriate optimization of various reaction parameters, a significant enhancement of the thermal stability (up to 549.9 °C) and the electrochemical properties could be achieved. A maximum specific capacitance of 166.0 ± 2.0 F g−1 with an excellent cycle stability of 87% after 5000 cycles at a current density of 1 A g−1 was achieved. In addition, a particularly high-power density of 2.75 kW kg−1 was obtained for this polybenzopyrrole, having a gravimetric energy density of 17 Wh kg−1. The results show that polybenzopyrroles are suitable candidates to compete with other conducting polymers as electrode materials for next-generation Faradaic supercapacitors. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000138077
Veröffentlicht am 28.09.2021
DOI: 10.3390/polym13172883
Zitationen: 9
Web of Science
Zitationen: 7
Zitationen: 10
Cover der Publikation
Zugehörige Institution(en) am KIT Center for Electrochemical Energy Storage Ulm & Karlsruhe (CELEST)
Institut für Angewandte Materialien – Elektrochemische Technologien (IAM-ET1)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2073-4360
KITopen-ID: 1000138077
Erschienen in Polymers
Verlag MDPI
Band 13
Heft 17
Seiten Art.-Nr.: 2883
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 27.08.2021
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