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High-rate, high-capacity electrochemical energy storage in hydrogen-bonded fused aromatics
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Fibre Technology. Berzelii Center EXSELENT on Porous Materials, Department of Materials and Environmental Chemistry, Stockholm University, 10691 Stockholm, Sweden.ORCID iD: 0000-0003-2221-2285
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2023 (English)In: Joule, E-ISSN 2542-4351, Vol. 7, no 5, p. 986-1002Article in journal (Refereed) Published
Abstract [en]

Designing materials for electrochemical energy storage with short charging times and high charge capacities is a longstanding challenge. The fundamental difficulty lies in incorporating a high density of redox couples into a stable material that can efficiently conduct both ions and electrons. We report all-organic, fused aromatic materials that store up to 310 mAh g−1 and charge in as little as 33 s. This performance stems from abundant quinone/imine functionalities that decorate an extended aromatic backbone, act as redox-active sites, engage in hydrogen bonding, and enable a delocalized high-rate energy storage with stability upon cycling. The extended conjugation and hydrogen-bonding-assisted bulk charge storage contrast with the surface-confined or hydration-dependent behavior of traditional inorganic electrodes.

Place, publisher, year, edition, pages
Elsevier BV , 2023. Vol. 7, no 5, p. 986-1002
Keywords [en]
energy storage, intercalation, organic electrodes, pseudocapacitance, supercapacitors
National Category
Inorganic Chemistry Renewable Bioenergy Research
Identifiers
URN: urn:nbn:se:kth:diva-331685DOI: 10.1016/j.joule.2023.03.011ISI: 001137001100001Scopus ID: 2-s2.0-85153908738OAI: oai:DiVA.org:kth-331685DiVA, id: diva2:1782413
Note

QC 20230713

Available from: 2023-07-13 Created: 2023-07-13 Last updated: 2024-02-06Bibliographically approved

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Li, Jian

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