Journal
JOURNAL OF ENERGY STORAGE
Volume 28, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.est.2020.101297
Keywords
Peptone; Tryptone; Adsorbent resin; Porous carbon; Supercapacitor
Categories
Funding
- National Key Research and Development Program of China [2016YFA0501602]
- National Natural Science Foundation of China [61871113]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [18KJB430032]
- open research fund of Key Laboratory of MEMS of Ministry of Education, Southeast University
- Fundamental Research Funds for the Central Universities
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The adsorption-doping has been shown an effective strategy for preparing nitrogen doped porous carbons. In the present study, commercial porous polymer spherical resin was used as adsorbent, and nitrogenous organic-peptone was employed to be the nitrogen source. Adsorption, carbonization and chemical etching were sequentially proceeded. Elements contents of nitrogen and oxygen in the obtained amorphous porous carbon were 2.93 at.% and 4.85 at.%, respectively. The specific surface area was 1,425 m(2) g(-1), of which the contribution mainly came from micropores with size of 4-7 angstrom. As an electroactive material, electrodes enclosed the porous carbon harvested specific capacitances of 343.9 and 253.5 F g(-1) at a current density of 1 A g(-1) in the three-electrode and symmetric-two-electrode systems, respectively. In basic aqueous electrolyte, the supercapacitor device achieved a maximum specific energy of 9.1 W h kg(-1) at a specific power of 123.2 W kg(-1). Findings of the study further illustrate the feasibility of the adsorption doping strategy. Results also acknowledged that the strategy could be used as a universal process to develop promising porous carbon materials for high performances supercapacitors.
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