دورية
A novel conjugated porous polymer based on triazine and imide as cathodes for sodium storage
| العنوان: | A novel conjugated porous polymer based on triazine and imide as cathodes for sodium storage |
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| المؤلفون: | Dai, Huichao, Zou, Jincheng, Gao, Yanbo, Li, Zengyu, Zhang, Chenyang, Zhang, Guoqun, Wang, Xiaobo, Wang, Chengliang |
| المصدر: | Journal of Polymer Science; March 2022, Vol. 60 Issue: 6 p992-1001, 10p |
| مستخلص: | Organic electrode materials have attracted more and more attention for sodium‐ion batteries (SIBs) that are regarded as one of the most promising alternatives of lithium‐ion batteries, because they can endure the storage of large sodium ions (with a larger radius than that of lithium ions) without obvious volume change. Herein, we report a novel conjugated porous polymer (TPIP) based on triazine and imide as cathodes material for SIBs. TPIP has abundant redox‐active sites, good thermal stability (400°C) and large specific surface area (306 m2g−1). As a result, TPIP electrode delivered a specific capacity of 120 mAh g−1after 50 cycles at a current density of 0.1 A g−1and 85 mAh g−1after 150 cycles at a current density of 1.0 A g−1. Ex‐situ X‐ray photoelectron spectra and Fourier transform infrared spectra showed that the TPIP electrodes reversibly stored three sodium ions per unit through the triazine rings and half of the carbonyl groups. These results deepen our understanding of charge storage mechanisms of polymers with triazine and imide units and will provide guidance for the future design of electrode materials for high‐performance SIBs. |
| قاعدة البيانات: | Supplemental Index |
| تدمد: | 26424150 26424169 |
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| DOI: | 10.1002/pol.20210573 |