Carbon nitride derived nitrogen-doped carbon nanosheets for high-rate lithium-ion storage

作者：Zhang, Wenli^*; Yin, Jian; Chen, Cailing; Qiu, Xueqing^*

来源：Chemical Engineering Sciences, 2021, 241: 116709.

DOI：10.1016/j.ces.2021.116709

• Carbon nitride
• Carbon
• Lithium-ion battery
• Anode
• Nitrogen-doped carbon
• Rate performance

Carbonaceous materials are practical anodes for lithium-ion batteries. Commercial graphite anode has a limited theoretical capacity of 372 mAh g(-1). Amorphous carbon anode could break the capacity limitation of the graphite anode, while nitrogen doping plays a critical role in effectively enhancing the reversible capacities and rate capability of carbonaceous anodes. Herein, we propose a new strategy for synthesizing nitrogen-doped carbon materials from graphitic carbon nitride. Zinc-assisted thermal treatment of graphitic carbon nitride enables the carbonization of graphitic carbon nitride and successful preparation of highly nitrogen-doped carbon. The obtained nitrogen-doped carbon material is doped with a highlevel nitrogen of 21.6 at. % which enables high reversible capacity and rate capability. This work puts forward a new synthesis protocol of nitrogen-doped carbon materials for promising anodes of lithium-ion batteries.

• 单位
  广东工业大学