Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6611046 | Electrochimica Acta | 2015 | 9 Pages |
Abstract
In this study, we present a simple but efficient template carbonization method to prepare nitrogen-doped nanoporous carbon material, in which phenidone acts as carbon/nitrogen sources and Mg(OH)2 as hard template. The results indicate that the carbon-1:1 sample is highly disordered with large BET surface area of 1513Â m2Â gâ1, high pore volume of 2.2Â cm3Â gâ1 and nitrogen content of 3.78%. As a result, it exhibits decent electrochemical behaviors, whose specific capacitance reaches up to 202.0Â FÂ gâ1 when measured at 1Â Â AÂ gâ1 in a three-electrode system. Moreover, azodicarbonamide has been introduced in the process of carbonization to further tailor the porosity of nanoporous carbon, named as the carbon-1:1:1 sample. In consequence, its BET surface area has decreased to be 1261Â m2Â gâ1 but the pore volume increased up to 2.8Â cm3Â gâ1, together with the large enhancement of nitrogen content up to 7.05%. Besides, it thus delivers a higher specific capacitance of 281.0Â FÂ gâ1 at 1Â AÂ gâ1, mostly due to the incremental content of nitrogen species. The proposed Mg(OH)2-assisted template carbonization method has provided an intriguing synthesis approach for N-doped nanoporous carbons, especially the nitrogen improvement simply by the addition of azodicarbonamide.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Hai Tao Yi, Yan Qi Zhu, Xiang Ying Chen, Zhong Jie Zhang,