@article {10708, title = {Tuning the catalytic property of nitrogen-doped graphene for cathode oxygen reduction reaction}, journal = {Physical Review B - Condensed Matter and Materials Physics}, year = {2012}, doi = {10.1103/PhysRevB.85.155454}, author = {Yexin Feng and Feifei Li and Zhenpeng Hu and Xiaoguang Luo and Lixin Zhang and Xiang-Feng Zhou and Hui-Tian Wang and Jing-Jun Xu and E.G. Wang} }