Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 42, Pages 15809-15814Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c05520
Keywords
Hydrothermal carbonization; Cellulose; Ammonium sulfate; Nitrogen doping; Sulfur doping; Electrode material
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Funding
- National Natural Science Foundation of China [21776063]
- Scientific and Technological Innovation Team of the University of Henan Province [18IRTSTHNO10]
- Foundation of Jiangsu University of Advanced Scholars [15JDG159]
- Key Research and Development Program of Zhenjiang City [5H2018018]
- RUDN University Program 5-100
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Achieving heteroatom-doped carbon materials using inorganic matter as the doping source is one of the major challenges for renewable energy storage materials. In this letter, a direct simple and reproducible methodology was designed for the preparation of nitrogen- and sulfur-doped materials by direct hydrothermal carbonization (300 degrees C for 1 h) of cellulose and ammonium sulfate at a mass ratio of 1:1. This N- and S-doped carbon exhibited an excellent electrochemical performance including high specific capacitance (227.3 F/g) when the current density is 1 A/g; however, its specific capacitance still retained 76.55% from the original when the current density was increased to 20 A/g,.
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