Molten-NaNH2 activated carbon cloth with high areal capacitance and exceptional rate stability for flexible asymmetric supercapacitors

  • Shuai Zhou
  • Ke Chen
  • Hongying QuanEmail author
  • Minxing Su
  • Zhen Zeng
  • Menghua Pan
  • Dezhi ChenEmail author
  • Lin Guo
Energy materials


An effective strategy was proposed to obtain molten-NaNH2 activated carbon cloth (MACC) for the manufacture of flexible asymmetric supercapacitors. First, the commercial carbon cloth is oxidized by wet chemical treatment and then activated in molten-NaNH2. The obtained MACC possess many advantages, including moderate oxygen functional groups and nitrogen heteroatoms, excellent wettability, large surface area, high conductivity and excellent mechanical strength and flexibility. As electrode, the MACC demonstrates a high areal capacitance of 744.5 mF cm−2 at a current density of 1 mA cm−2, and 692.0 mF cm−2 at a high current density of 50 mA cm−2 with the capacitance retention as high as 92.93% in 6 M KOH. Furthermore, the flexible asymmetrical supercapacitors are fabricated based on the MACC electrode and Co(OH)2 electrode using aqueous electrolytes. The assembled aqueous supercapacitors can release an areal capacitance of 373.9 mF cm−2 under the current density of 2 mA cm−2, and the corresponding energy density is up to 1.49 mW cm−3 at the power density of 19.45 mW cm−3. The impressive results reveal that the as-prepared MACC is a potential electrode for the flexible supercapacitors.



This work was supported by the Aeronautical Science Foundation of China (Grant No. 2014ZF56021), the Natural Science Foundation (Grant No. 20181BAB206012) of Jiangxi Province, the Foundation (GJJ170579) from the Educational Commission of Jiangxi Province, the Graduate Innovation Foundation (YC2017-S319) of Jiangxi Province, and Postdoctoral Science Foundation of China (2017M610030).

Supplementary material

10853_2019_3453_MOESM1_ESM.docx (9.8 mb)
Supplementary material 1 (DOCX 9986 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, School of Environmental and Chemical EngineeringNanchang Hangkong UniversityNanchangChina
  2. 2.School of Physics and Nuclear Energy EngineeringBeihang UniversityBeijingChina
  3. 3.School of Materials Science and EngineeringNanchang Hangkong UniversityNanchangChina
  4. 4.School of ChemistryBeihang UniversityBeijingChina

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