期刊
RSC ADVANCES
卷 6, 期 12, 页码 9772-9778出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra27045f
关键词
-
资金
- National Natural Science Foundation of China [21274043]
In this paper, nitrogen/phosphorous co-doped porous carbons (N/P-PCs) with hierarchical porosity were prepared by a one-step carbonization method, of which nitrogen-containing PAA/MMF is the precursor and phosphorous-containing sodium hypophosphite monohydrate is the novel pore-forming agent. The synergistic effect of multilevel porosity and heteroatomic functionalities results in good electrochemical performance. Tested as electrode materials for supercapacitors, N/P-PC-50 demonstrates a maximal specific capacitance of 177 F g(-1) at a current density of 0.1 A g(-1), excellent rate capability (67% capacitance retention at 10 A g(-1)) and superior cycling stability (no capacitance loss after 10 000 cycles). In addition, N/P-PCs have the potential to be used for other applications, and this facile, low-cost and safe synthesis strategy provides a feasible route to develop many hierarchically porous carbon-based materials.
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