Premium
Porous Nitrogen‐Doped Carbon Microspheres Derived from Microporous Polymeric Organic Frameworks for High Performance Electric Double‐Layer Capacitors
Author(s) -
Han Jinpeng,
Xu Guiyin,
Dou Hui,
MacFarlane Douglas R.
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201404975
Subject(s) - microporous material , carbonization , materials science , current density , capacitance , supercapacitor , chemical engineering , porosity , specific surface area , nitrogen , carbon fibers , electrode , catalysis , chemistry , organic chemistry , composite material , scanning electron microscope , physics , quantum mechanics , composite number , engineering
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 1303 m 2 g −1 , respectively, are demonstrated as promising candidates for EDLCs. At a current density of 0.5 A g −1 , the specific capacitances of the PNCM and A‐PNCM are 248 and 282 F g −1 , respectively. At the relatively high current density of 20 A g −1 , the capacitance remaining is 95 and 154 F g −1 , respectively. Capacity retention of the A‐PNCM is more than 92 % after 10 000 charge/discharge cycles at a current density of 2 A g −1 .