CAS Key Laboratory of Organic Solids, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190, P. R. China.
Graduate University of Chinese Academy of Sciences , Beijing 100190, P. R. China.
ACS Appl Mater Interfaces. 2016 Mar 2;8(8):5366-75. doi: 10.1021/acsami.5b12370. Epub 2016 Feb 16.
A high conductive 2D COF polyporphyrin (TThPP) linked by 4-thiophenephenyl groups was synthesized through an in situ chemical oxidative polymerization on the surface of copper foil. The TThPP films were used as the anode of lithium-ion battery, which exhibited high specific capacities, excellent rate performances, and long cycle lives due to the alignment of 2D polyporphyrin nanosheets, and they (i) can highly efficiently adsorb Li atoms, (ii) have short-ended paths for the fast lithium ion diffusion, and (iii) open nanopores holding electrolyte. The reversible capacity is up to 666 mAh/g. This is the first example of an organic 2D COF for an anode of lithium-ion battery and represents an important step toward the use of COFs in the next-generation high-performance lithium-ion battery.
通过在铜箔表面的原位化学氧化聚合，合成了一种由 4-噻吩苯基基团连接的高导电性二维 COF 卟啉（TThPP）。TThPP 薄膜被用作锂离子电池的阳极，由于二维卟啉纳米片的排列，它表现出高比容量、优异的倍率性能和长循环寿命，因为：（i）它可以高效地吸附 Li 原子；（ii）具有快速锂离子扩散的短路径；（iii）开有纳米孔以容纳电解质。可逆容量高达 666 mAh/g。这是有机二维 COF 作为锂离子电池阳极的首例，代表着 COF 在下一代高性能锂离子电池中的应用迈出了重要的一步。
