Journal
ELECTROCHIMICA ACTA
Volume 222, Issue -, Pages 141-148Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.10.184
Keywords
Phosphorus and sulfur dual doping; hierarchic porous carbons; supercapacitors
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Funding
- National Natural Science Foundation of China [51462020, 201664009]
- Key Laboratory of Eco-Environment-Related Polymer Materials of the Ministry of Education Program [KF-13-01]
- Hongliu young teacher cultivate project of Lanzhou University of Technology [Q201112]
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This work presented a novel phosphorus and sulfur dual doped porous carbon materials (PSDPC) with hierarchic porous structure, large specific surface area and extra-large pore volume fabricated using phytic acid as precursor and SBA-15 as template. The specific surface areas and total pore volume of the reported materials reached 2276 m(2) g(-1) and 3.95 cm(3) g(-1), respectively. The P and S heteroatoms were successfully incorporated into the framework of the carbon matrix mainly by P-C bond and thiophenelike sulfur species, doping level was found to be 1.88 and 1.23 at.% for P and S heteroatoms, respectively. The reported material exhibited competitive electric storage/release capacity, excellent rate capability and good cycle performance, which specific capacitance reached 253 Fg(-1), no apparent decrease of the specific capacitance was observed as the current density increased from 0.5 to 10 Ag-1, and the specific capacitance retention reached 100% after 1000 times charge/discharge cycle. (C) 2016 Elsevier Ltd. All rights reserved.
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