Chemical Research in Chinese Universities ›› 2021, Vol. 37 ›› Issue (6): 1323-1327.doi: 10.1007/s40242-021-1342-9

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Architecting Pyrenyl-graphdiyne Nanowalls for High Capacity and Long-life Lithium Storage

AN Qingqing1, JIANG Yanglin2, HE Huan1, GAO Juan1, WANG Peng2, JIA Zhiyu1   

  1. 1. Key Laboratory of Cluster Science, Ministry of Education, Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China;
    2. Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China
  • Received:2021-08-30 Revised:2021-09-30 Online:2021-11-23 Published:2021-10-07
  • Contact: JIA Zhiyu, HE Huan, GAO Juan E-mail:jzy@bit.edu.cn;hehuan@bit.edu.cn;gaojuan@bit.du.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China(Nos.21801014, 2185299).

Abstract: Graphdiyne, as the novel carbon allotrope, which is composed of sp2- and sp-hybridized carbon, has exhibited excellent catalytic activity and conductivity. It has been applied in series of fields, such as Li-battery, catalyst and energy conversion. Expanding well-defined structures and useful applications of graphdiyne is still full of challenges in material chemistry. Herein, we optimized the synthesis condition of pyrenyl-graphdiyne to obtain the nanowall structure. Compared with the typical nanosheet structure, the pyrenyl-graphdiyne nanowalls (Pyr-GDY-NWs) have more area for lithium insertion. Lithium-ion battery featuring Pyr-GDY-NWs-based electrode exhibits a high reversible specific capacity up to 1464 mA‧h/g, which is triple than that of the commercial graphite. We also used the theoretical calculation to investigate the mechanism of Li storage in Pyr-GDY-NWs. The experiment and theoretical data showed that Pyr-GDY-NWs had the potential application in lithium batteries. Therefore, Pyr-GDY with a defined structure would be applied in energy storage and energy conversion.

Key words: Graphdiyne, Pyrene, Nanowall, Li-battery