Red-blood-cell-like nitrogen-doped porous carbon as an efficient metal-free catalyst for oxygen reduction reaction
Li-ping Wang , Jing Tian , Jing-sha Li , Xian-guang Zeng , Zhi-guang Peng , Xiao-bing Huang , You-gen Tang , Hai-yan Wang
Journal of Central South University ›› 2019, Vol. 26 ›› Issue (6) : 1458 -1468.
Red-blood-cell-like nitrogen-doped porous carbon as an efficient metal-free catalyst for oxygen reduction reaction
A red-blood-cell-like nitrogen-doped porous carbon catalyst with a high nitrogen content (9.81%) and specific surface area (631.46 m2/g) was prepared by using melamine cyanuric acid and glucose as sacrificial template and carbon source, respectively. This catalyst has a comparable onset potential and a higher diffusion-limiting current density than the commercial 20 wt% Pt/C catalyst in alkaline electrolyte. The oxygen reduction reaction mechanism catalyzed by this catalyst is mainly through a 4e pathway process. The excellent catalytic activity could origin from the synergistic effect of the in-situ doped nitrogen (up to 9.81%) and three-dimensional (3D) porous network structure with high specific surface area, which is conducive to the exposure of more active sites. It is interesting to note that the catalytic activity of oxygen reduction strongly depends on the proportion of graphic N rather than the total N content.
oxygen reduction reaction / nitrogen-doped carbon / porous structure / red-blood-cell-like morphology
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
|
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
|
| [31] |
|
| [32] |
|
| [33] |
|
| [34] |
|
| [35] |
|
| [36] |
|
| [37] |
|
| [38] |
|
| [39] |
|
| [40] |
|
| [41] |
|
| [42] |
|
| [43] |
LI Jing-sha, FU Liang, LUAN Jing-yi, XIE Hua-lin, CHENG Fang-yi, TANG You-gen, WANG Hai-yan. A strategy to achieve well-dispersed hollow nitrogen-doped carbon microspheres with trace iron for highly efficient oxygen reduction reaction in Al-air batteries [J]. J Electrochem Soc, 2018, 165: A3766-A3772. |
| [44] |
J Electrochem Soc, 2018, 1659 |
| [45] |
|
| [46] |
|
| [47] |
|
| [48] |
|
/
| 〈 |
|
〉 |