Facile in Situ Synthesis of Multiple-Heteroatom-Doped Carbons Derived from Polyimide Precursors for Flexible All-Solid-State Supercapacitors

Title
Facile in Situ Synthesis of Multiple-Heteroatom-Doped Carbons Derived from Polyimide Precursors for Flexible All-Solid-State Supercapacitors
Authors
유남호김남동봉세화김대겸Xuanzhen JinKwang-dong SeongMinsik HwangYuanzhe Piao
Keywords
polyimide; Supercapacitors; carbon materials; heteroatom
Issue Date
2019-01
Publisher
ACS Applied Materials & Interfaces
Citation
VOL 11, NO 2-2005
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/68972
ISSN
1944-8244
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KIST Publication > Article
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