One-pot synthesis of nitrogen and sulfur co-doped graphene as efficient metal-free electrocatalysts for the oxygen reduction reaction

Xin Wang, Jie Wang, Deli Wang, Shuo Dou, Zhaoling Ma, Jianghong Wu, Li Tao, Anli Shen, Canbin Ouyang, Qiuhong Liu, Shuangyin Wang
Chemical Communications: Chem Comm 2014 May 14, 50 (37): 4839-42
Novel N, S co-doped graphene (NSG) was prepared by annealing graphene oxide with thiourea as the single N and S precursor. The NSG electrodes, as efficient metal-free electrocatalysts, show a direct four-electron reaction pathway, high onset potential, high current density and high stability for the oxygen reduction reaction.

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