Structural characterization and electrochemical performance of macroporous graphite-like C3N3 prepared by the Wurtz reaction and heat treatment. Issue 69 (11th September 2017)

• Record Type: Journal Article
• Authors: Yin, Hao; Guo, Qixun; He, Dingzeng; Li, Juntao; Sun, Shigang
• Is Part Of: RSC advances. Volume 7:Issue 69(2017)
• Page Start: 44001
• Page End: 44008
• Publication Date: 2017-09-11
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c7ra07707f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : g-C3 N3 is synthesized by a facile method and further heat treatment can improve the initial coulombic efficiency and reversible capacity. Abstract : Macroporous graphite-like C3 N3 (g-C3 N3 ) with s-triazine rings as building blocks was synthesized by the Wurtz reaction of C3 N3 Cl3 with sodium in autoclaves. The structure and electrochemical performance as a lithium ion battery anode of the obtained samples were then investigated. Structural characterization results reveal that the as-prepared samples show characteristic 002 basal plane diffractions and s-triazine rings structures with an N/C atomic ratio of about 1 : 1, indicating that the theoretical g-C3 N3 has been successfully prepared. It was found that the heat treatment can help improve the initial coulombic efficiency and reversible capacity due to the decrease of the nitrogen content and the partial degradation and rearrangement of triazine rings. When used as an anode for Li-ion batteries, the g-C3 N3 formed by heat treatment up to 600 °C exhibits a relatively good reversible capability and cycling stability (197.8 mA h g −1 at 100 mA g −1 ), with measurements superior to those of reported bulk g-C3 N4 and other graphite-like carbon nitride analogues.