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Azine-based polymers with a two-electron redox process as cathode materials for organic batteries

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Abstract

There is a growing interest in organic-based cathode materials for batteries due to their higher sustainability, low toxicity and energy-efficient production and recycling. Organic p-type compounds that undergo two reversible oxidations are relatively rare, but can provide a higher specific capacity compared to molecules undergoing one-electron processes. We herein present azine (N–N-linked diimine)-based polymers featuring two reversible oxidations at attractive potentials of 2.9 and 3.3 V vs. Li/Li+. A cross-linked and end-capped azine-based polymer provided good cycling stability in a Li-based half cell and an available specific capacity of 133 mA h g−1 paired with a high rate performance up to 100C rate. Our study introduces azines as attractive cathode-active battery materials.

Graphical abstract: Azine-based polymers with a two-electron redox process as cathode materials for organic batteries

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Article information


Submitted
15 Apr 2020
Accepted
07 May 2020
First published
13 May 2020

J. Mater. Chem. A, 2020, Advance Article
Article type
Paper

Azine-based polymers with a two-electron redox process as cathode materials for organic batteries

P. Acker, M. E. Speer, J. S. Wössner and B. Esser, J. Mater. Chem. A, 2020, Advance Article , DOI: 10.1039/D0TA04083E

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