کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1287966 | 1497998 | 2013 | 7 صفحه PDF | دانلود رایگان |

In this study, hierarchically porous carbon nanofibers (HPCNFs) containing numerous electroactive heteroatoms are prepared by controlling carbonization and chemical activation. The HPCNFs have a large surface area of 2862.1 m2 g−1, hierarchical porous structure, and 20.6 at% electroactive oxygen atoms. These HPCNFs exhibit excellent electrochemical performance, and their thermal treatment with melamine results in nitrogen-doped HPCNFs (N-HPCNFs) with 9.1 at% nitrogen and improved electrical property (1.8 × 102 Ω □−1). The electrochemical performance of N-HPCNFs is better than that of HPCNFs, displaying specific energy of 113 Wh kg−1, specific power of 105 kW kg−1, and stable cycle life of over 5000 cycles.
► Hierarchically porous carbon nanofibers containing heteroatoms were prepared.
► Hierarchical structure was induced by controlling carbonization and activation of electrospun nanofibers.
► High specific energy (113 Wh kg−1) and power (105 kW kg−1) was achieved.
► A stable cycle life over 5000 cycles was also achieved.
Journal: Journal of Power Sources - Volume 234, 15 July 2013, Pages 285–291