Three‐dimensional Polymers as Organic Cathodes for Affordable and Sustainable Sodium/Potassium‐ion Batteries

Author:

Mohammadiroudbari Motahareh1,Li Shi2,Huang Jinghao1,Yang Zhenzhen3,Chen Fu4,Cheng Lei5,Luo Chao16ORCID

Affiliation:

1. Department of Chemistry and Biochemistry George Mason University Fairfax VA 22030 USA

2. Material Science Division Argonne National Laboratory Lemont IL 60439 USA

3. Chemical Sciences and Engineering Division Argonne National Laboratory Lemont IL 60439 USA

4. Department of Chemistry and Biochemistry University of Maryland College Park MD 20742 USA

5. Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA

6. Quantum Science & Engineering Center George Mason University Fairfax VA 22030 USA

Abstract

AbstractRedox‐active polymers (RAPs) are promising organic electrode materials for affordable and sustainable batteries due to their flexible chemical structures and negligible solubility in the electrolyte. Developing high‐dimensional RAPs with porous structures and crosslinkers can further improve their stability and redox capability by reducing the solubility and enhancing reaction kinetics. This work reports two three‐dimensional (3D) RAPs as stable organic cathodes in Na‐ion batteries (NIBs) and K‐ion batteries (KIBs). Carbonyl functional groups are incorporated into the repeating units of the RAPs by the polycondensation of Tetrakis(4‐aminophenyl)methane and two different dianhydrides. The RAPs with interconnected 3D extended conjugation structures undergo multi‐electron redox reactions and exhibit high performance in both NIBs and KIBs in terms of long cycle life (up to 8000 cycles) and fast charging capability (up to 2 A g−1). The results demonstrate that developing 3D RAPs is an effective strategy to achieve high‐performance, affordable, and sustainable NIBs and KIBs.

Funder

National Science Foundation

Publisher

Wiley

Subject

Electrochemistry,Electrical and Electronic Engineering,Energy Engineering and Power Technology

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