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Journal Article

Redox-Bipolar Polyimide Two-Dimensional Covalent Organic Framework Cathodes for Durable Aluminium Batteries

MPS-Authors
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Liu,  Yannan       
Department of Synthetic Materials and Functional Devices (SMFD), Max Planck Institute of Microstructure Physics, Max Planck Society;

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Wang,  Zhiyong       
Department of Synthetic Materials and Functional Devices (SMFD), Max Planck Institute of Microstructure Physics, Max Planck Society;

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Feng,  Xinliang       
Department of Synthetic Materials and Functional Devices (SMFD), Max Planck Institute of Microstructure Physics, Max Planck Society;

External Resource

https://doi.org/10.1002/anie.202306091
(Publisher version)

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Fulltext (public)

Angew Chem Int Ed-2023-Liu.pdf
(Publisher version), 3MB

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Citation

Liu, Y., Lu, Y., Khan, A. H., Wang, G., Wang, Y., Morag, A., et al. (2023). Redox-Bipolar Polyimide Two-Dimensional Covalent Organic Framework Cathodes for Durable Aluminium Batteries. Angewandte Chemie International Edition, 62(30): e202306091. doi:10.1002/anie.202306091.


Cite as: https://hdl.handle.net/21.11116/0000-000D-7115-C
Abstract
Emerging rechargeable aluminium batteries (RABs) offer a sustainable option for next-generation energy storage technologies with low cost and exemplary safety. However, the development of RABs is restricted by the limited availability of high-performance cathode materials. Herein, we report two polyimide two-dimensional covalent organic frameworks (2D-COFs) cathodes with redox-bipolar capability in RAB. The optimal 2D-COF electrode achieves a high specific capacity of 132 mAh g−1. Notably, the electrode presents long-term cycling stability (with a negligible ≈0.0007 % capacity decay per cycle), outperforming early reported organic RAB cathodes. 2D-COFs integrate n-type imide and p-type triazine active centres into the periodic porous polymer skeleton. With multiple characterizations, we elucidate the unique Faradaic reaction of the 2D-COF electrode, which involves AlCl2+ and AlCl4− dual-ions as charge carriers. This work paves the avenue toward novel organic cathodes in RABs.