期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 21, 期 6, 页码 2310-2314出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201404975
关键词
energy storage; nitrogen doping; POF; porous carbon; supercapacitors
资金
- National Natural Science Foundation of China [21103091, 21173120, 51372116]
- National Basic Research Program of China (973 Program) [2014CB239701]
- Natural Science Foundation of Jiangsu Province [BK2011030]
- Fundamental Research Funds for the Central Universities [NP2014403]
This research presents a simple and efficient method to synthesize porous nitrogen-doped carbon microspheres (PNCM) by the carbonization of microporous poly(terephthalaldehyde-pyrrole) organic frameworks (PtpOF). The common KOH activation process is used to tune the porous texture of the PNCM and produce an activated-PNCM (A-PNCM). The PNCM and A-PNCM with specific surface area of 921 and 1303m(2)g(-1), respectively, are demonstrated as promising candidates for EDLCs. At a current density of 0.5Ag(-1), the specific capacitances of the PNCM and A-PNCM are 248 and 282Fg(-1), respectively. At the relatively high current density of 20Ag(-1), the capacitance remaining is 95 and 154Fg(-1), respectively. Capacity retention of the A-PNCM is more than 92% after 10000 charge/discharge cycles at a current density of 2Ag(-1).
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