Poly(benzimidazobenzophenanthroline)-Ladder-Type Two-Dimensional Conjugated Covalent Organic Framework for Fast Proton Storage**

Wang M, Wang G, Naisa C, Fu Y, Gali SM, Paasch S, Wang M, Wittkämper H, Papp C, Brunner E, Zhou S, Beljonne D, Steinrück HP, Dong R, Feng X (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Angewandte Chemie International Edition Wiley

DOI: 10.1002/anie.202310937

Abstract

Electrochemical proton storage plays an essential role in designing next-generation high-rate energy storage devices, e.g., aqueous batteries. Two-dimensional conjugated covalent organic frameworks (2D c-COFs) are promising electrode materials, but their competitive proton and metal-ion insertion mechanisms remain elusive, and proton storage in COFs is rarely explored. Here, we report a perinone-based poly(benzimidazobenzophenanthroline) (BBL)-ladder-type 2D c-COF for fast proton storage in both a mild aqueous Zn-ion electrolyte and strong acid. We unveil that the discharged C−O− groups exhibit largely reduced basicity due to the considerable π-delocalization in perinone, thus affording the 2D c-COF a unique affinity for protons with fast kinetics. As a consequence, the 2D c-COF electrode presents an outstanding rate capability of up to 200 A g−1 (over 2500 C), surpassing the state-of-the-art conjugated polymers, COFs, and metal–organic frameworks. Our work reports the first example of pure proton storage among COFs and highlights the great potential of BBL-ladder-type 2D conjugated polymers in future energy devices.

Authors with CRIS profile

Haiko Wittkämper Lehrstuhl für Physikalische Chemie II Christian Papp Lehrstuhl für Physikalische Chemie II Hans-Peter Steinrück Lehrstuhl für Physikalische Chemie II

Involved external institutions

Technische Universität Dresden DE Germany (DE) University of Mons / Université de Mons BE Belgium (BE) Helmholtz-Zentrum Dresden-Rossendorf (HZDR) DE Germany (DE)

How to cite

APA:

Wang, M., Wang, G., Naisa, C., Fu, Y., Gali, S.M., Paasch, S.,... Feng, X. (2023). Poly(benzimidazobenzophenanthroline)-Ladder-Type Two-Dimensional Conjugated Covalent Organic Framework for Fast Proton Storage**. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202310937

MLA:

Wang, Mingchao, et al. "Poly(benzimidazobenzophenanthroline)-Ladder-Type Two-Dimensional Conjugated Covalent Organic Framework for Fast Proton Storage**." Angewandte Chemie International Edition (2023).

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