Facile in Situ Preparation of Graphitic‑C3N4@carbon Paper As an Efficient Metal-Free Cathode for Nonaqueous Li–O2 Battery

• Published in: ACS applied materials & interfaces Vol. 7; no. 20; pp. 10823 - 10827
• Main Authors: Yi, Jin, Liao, Kaiming, Zhang, Chaofeng, Zhang, Tao, Li, Fujun, Zhou, Haoshen
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 27.05.2015
• Subjects: graphitic-carbon nitride; lithium oxygen battery; cathode; metal-free; oxygen reduction/evolution reaction
• ISSN: 1944-8244; 1944-8252
• DOI: 10.1021/acsami.5b01727

The rechargeable Li–O2 batteries with high theoretical specific energy are considered to be a promising energy storage system for electric vehicle application. Because of the prohibitive cost, limited supply, and weak durability of precious metals, the developments of novel metal-free catalysts become significant. Herein, the graphitic-carbon nitride@carbon papers have been produced by a facile in situ method and explored as cathodes for Li–O2 batteries, which manifest considerable electrocatalytic activity toward oxygen reduction reaction and oxygen evolution reaction in nonaqueous electrolytes because of their improved electronic conductivity and high nitrogen content. The assembled Li–O2 batteries using graphitic-carbon nitride@carbon papers as cathodes deliver good rate capability and cycling stability with a capacity retention of more than 100 cycles.