Kim, Dae Kyom Bong, Sehwa Jin, Xuanzhen Seong, Kwang-dong Hwang, Minsik Kim, Nam Dong You, Nam-Ho Piao, Yuanzhe 2024-01-19T21:02:02Z 2024-01-19T21:02:02Z 2021-09-02 2019-01-16 1944-8244 https://pubs.kist.re.kr/handle/201004/120460 Efficient strategies to prepare carbon materials with improved electrochemical performance for supercapacitors have been in great demand. Herein, we develop multiple-heteroatom-doped carbons (from single- to triple-doped) by pyrolysis of polyimide precursors using a facile in situ approach. This approach can be used to tune heteroatom compositions by controlling the desired polyimide monomer functional groups as well as introducing external doping sources into the polyimide precursor solutions. Various types of multiple-heteroatom-doped carbons such as N; N,S-; N,F-; N,S,B-; and N,F,B-doped carbons are synthesized. Among these synthesized multiple-heteroatom-doped carbons, the specific capacitance of N,F,B triple-doped carbon exhibits 350.3 F g(-1) at 1 A g(-1) in a three-electrode system. Furthermore, a flexible all-solid-state supercapacitor device using the N,F,B-doped carbon with poly(vinyl alcohol) -1 M H2SO4 gel electrolyte demonstrates a volumetric energy density of 0.58 mW h cm(-3). It is expected that this synthesis strategy for multiple-heteroatom-doped carbons can be used for practical supercapacitor applications. English American Chemical Society EFFICIENT ELECTRODE MATERIAL POROUS CARBON RAMAN-SPECTROSCOPY NITROGEN GRAPHENE BORON NANOFIBERS FLUORINE GRAPHITE Facile in Situ Synthesis of Multiple-Heteroatom-Doped Carbons Derived from Polyimide Precursors for Flexible All-Solid-State Supercapacitors Article 10.1021/acsami.8b15162 1 ACS Applied Materials & Interfaces, v.11, no.2, pp.1996 - 2005 ACS Applied Materials & Interfaces 11 2 1996 2005 scie scopus 000456351100029 2-s2.0-85059753322 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article EFFICIENT ELECTRODE MATERIAL POROUS CARBON RAMAN-SPECTROSCOPY NITROGEN GRAPHENE BORON NANOFIBERS FLUORINE GRAPHITE supercapacitor heteroatom doping polyimide carbon textile flexible device