Redox Donor–Acceptor Conjugated Microporous Polymers as Ultralong‐Lived Organic Anodes for Rechargeable Air Batteries,Angewandte Chemie International Edition

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Redox Donor–Acceptor Conjugated Microporous Polymers as Ultralong‐Lived Organic Anodes for Rechargeable Air Batteries
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-02-13 , DOI: 10.1002/anie.202016746
Linfeng Zhong ₁ , Zhengsong Fang ₁ , Chenhao Shu ₂ , Chunshao Mo ₁ , Xiaochuan Chen ₂ , Dingshan Yu ₃

Affiliation

Herein, we explore a new redox donor–acceptor conjugated microporous polymer (AQ‐CMP) by utilizing anthraquinone and benzene as linkers via C‐C linkages and demonstrate the first use of CMP as ultralong‐lived anodes for rechargeable air batteries. AQ‐CMP features an interconnected octupole network, which affords not only favorable electronic structure for enhanced electron transport and n‐doping activity compared to linear counterpart, but also high density of active sites for maximizing the formula‐weight‐based redox capability. This coupled with highly cross‐linked and porous structure endows AQ‐CMP with a specific capacity of 202 mAh g⁻¹ (96 % of theoretical capacity) at 2 Ag⁻¹ and ≈100 % capacity retention over 60000 charge/discharge cycles. The assembled CMP‐air full cell shows a stable and high capacity with full capacity recovery after only refreshing cathodes, while the decoupled electrolyte and cathode design boosts the discharge voltage and voltage efficiency to ≈1 V and 87.5 %.

中文翻译：

氧化还原供体-受体共轭的微孔聚合物作为可充电空气电池的超长寿命有机阳极

本文中，我们通过利用蒽醌和苯经C-C键作为连接基，探索了一种新的氧化还原供体-受体共轭微孔聚合物（AQ-CMP），并证明了CMP首次用作可再充电空气电池的超长寿命阳极。AQ-CMP具有互连的八极网络，与线性对应物相比，它不仅提供了有利的电子结构来增强电子传输和n掺杂活性，而且还提供了高活性位点密度，可最大程度地提高基于配方重量的氧化还原能力。加上高度交联的多孔结构，AQ-CMP在2 Ag ^-1时的比容量为202 mAh g ^-1（理论容量的96％）在60000次充电/放电循环中，≈100％的容量保持率。组装的CMP-air满电池在仅刷新阴极后即可显示稳定且高容量，并且具有完全容量恢复，而解耦的电解质和阴极设计可将放电电压和电压效率提升至≈1V和87.5％。

更新日期：2021-04-23

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