Development of N-doped carbons from zeolite-templating route as potential electrode materials for symmetric supercapacitors
Meng Ren , Cheng-yun Zhang , Yue-lin Wang , Jin-jun Cai
International Journal of Minerals, Metallurgy, and Materials ›› 2018, Vol. 25 ›› Issue (12) : 1482 -1492.
Development of N-doped carbons from zeolite-templating route as potential electrode materials for symmetric supercapacitors
N-doped carbons were fabricated from zeolite-templated carbon via modification with melamine and mild KOH activation. The N-doping treatment and KOH activation slightly lowered the surface areas of pristine zeolite-templated carbon; nonetheless, N-doped carbons with a lower surface area exhibited much higher capacitance and cycling stability as fabricated into symmetric supercapacitor. Significantly, N-doped carbon obtained at 700°C showed a capacitance of 45.7 F/g at 0.1 A/g and 42.0 F/g at 10 A/g for the fabricated supercapacitor with 6 M KOH electrolyte, with 92% retention of initial capacitance as current density increased up to 100-fold. This performance was attributed to the dual contribution of electric double-layer capacitance and pseudo-capacitance. The assembled supercapacitor also exhibited excellent cycling stability, with 91% capacitance retention at 10 A/g after 10000 cycles.
zeolite template / porous carbon / nitrogen-doping / chemical activation / supercapacitor
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
W.W. Gao, H. Huang, H.Y. Shi, X. Feng, and W.B. Song, Nitrogen–rich graphene from small molecules as high performance anode material, Nanotechnology, 25(2014), No. 41, art. No. 415402. |
| [23] |
|
| [24] |
Z.X. Ma, T. Kyotani, and A. Tomita, Synthesis methods for preparing microporous carbons with a structural regularity of zeolite Y, Carbon, 40 (2002), No. 13, p. 2367. |
| [25] |
|
| [26] |
|
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
B.J. Zhu, B. Liu, C. Qu, H. Zhang, W.H. Guo, Z.B. Liang, F. Chen, and R.Q. Zou, Tailoring biomass–derived carbon for high–performance supercapacitors from controllably cultivated algae microspheres, J. Mater. Chem. A, 6(2018), No. 4, No. p. 1523. |
| [31] |
J.S. Moon, H. Kim, D.C. Lee, J.T. Lee, and G. Yushin, Increasing capacitance of zeolite–templated carbons in electric double layer capacitors, J. Electrochem. Soc., 162(2015), No. 5, p. A5070. |
| [32] |
|
| [33] |
|
| [34] |
|
| [35] |
|
| [36] |
|
| [37] |
|
| [38] |
|
/
| 〈 |
|
〉 |