Fengyuan Lu, Yuanyuan Che*, Hualing Tian, Yanjun Cai, Qingrong Kong, Xiang Yao and Zhi Su*,
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引用次数: 0
摘要
共轭微孔聚合物（CMPs）作为一类新兴的有机材料，由于其优异的结构稳定性和较强的可设计性而引起了人们的广泛关注。本研究以蒽醌和苯胺为连接剂，通过C-N键制备了氧化还原给受体共轭微孔聚合物（TAPB-AQ和PBAPD-AQ），并将其作为阳极构建高性能lib。与TAPB-AQ相比，PBAPD-AQ具有更多的电活性基团，更窄的带隙，更高的热分解温度（5%的质量损失高达384℃）。由于在电解质中的不溶性和更丰富的孔隙结构，PBAPD-AQ具有高容量（0.5 a g-1下219.8 mA h g-1）和超稳定的循环性能（0.5 a g-1下1200次循环后96.1%的保留率）。此外，通过非原位XPS和DFT计算，探讨了PBAPD-AQ作为负极材料的锂存储机理。
Anthraquinone-Based Conjugated Microporous Polymer as Anode for Long-Life Lithium Batteries
Conjugated microporous polymers (CMPs), as an emerging class of organics, have generated keen interest due to their excellent structural stability and stronger designability. Herein, redox donor–acceptor conjugated microporous polymers (TAPB-AQ and PBAPD-AQ) were prepared by utilizing anthraquinone and anilines as linkers via C–N linkages and used as anodes to build high-performance LIBs. Compared with TAPB-AQ, PBAPD-AQ has more electroactive groups, a narrower band gap, and higher thermal decomposition temperatures (5% mass loss was up to 384 °C). Benefiting from the insolubility in electrolyte and richer pore structure, PBAPD-AQ shows a high capability (219.8 mA h g–1 at 0.5 A g–1) and ultrastable cycling performance (96.1% retention after 1200 cycles at 0.5 A g–1). Moreover, the lithium storage mechanism of PBAPD-AQ as the anode electrode material is explored through ex situ XPS and DFT computations.
期刊介绍：
ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.
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