High porosity nitrogen and phosphorous Co-doped carbon nanosheets as an efficient catalyst for oxygen reduction
By You, Chenghang; Wang, Lili; Huang, Yanxia; Jiang, Xiaowei; Li, Xiaobao; Wang, Chongtai; Hua, Yingjie; Wang, Xianghui; Liao, Shijun
Published in International Journal of Hydrogen Energy
2018
Abstract
High porosity nitrogen and phosphorous co-doped carbon nanosheets with high surface area (1057.9 m2 g?1) are fabricated by using polyacrylonitrile and red phosphorous as the precursors. The catalyst exhibits outstanding catalytic performance towards oxygen reduction reaction (ORR), with its half-wave potential 35 mV more superior to that of Pt/C. In addition to high ORR performance, our catalyst also exhibits remarkable methanol tolerance, outstanding stability, as well as high catalytic efficiency (almost 100% selectivity towards four-electron path). Based on the characterization results, we find that moderate P introduction can significantly modify catalysts N compositions, as well as porous structures, which, we suggest, should be the proper origins to our catalyst's outstanding performance.