Journal
APPLIED SURFACE SCIENCE
Volume 488, Issue -, Pages 316-325Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2019.05.136
Keywords
Bioconcentration; Bioassembly; Fungal hyphae; Supercapacitors
Categories
Funding
- Sichuan Science and Technology Program [2019JDRC0118, 2019YFN0125, 2019YFS0469, 2019YFS0503, 2019YFS0461, 2019YFG0433, 2019YFG0434]
- Project of State Key Laboratory of Environment-friendly Energy Materials, Southwest University of Science and Technology [17fksy0114]
- Plan Projects of Mianyang Science and Technology [18YFZJ003]
- National Natural Science Foundation of China [21601147]
- Education Department of Sichuan Province [17zd1131, 18ZA0494]
- China Postdoctoral Fund [2018m630715]
- Research fund of Southwest University of Science and Technology for PhD [18zx7149]
- Longshan academic talent research supporting program of SWUST [17LZX526, 18LZXT04, 18LZX420]
- Postgraduate Innovation Fund Project by Southwest University of Science and Technology [19ycx0036]
- Sichuan's Training Program of Innovation and Entrepreneurship for Undergraduate [S201910619101]
- Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory [18kfhk01]
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Herein, we demonstrate a general strategy for the preparation of nitrogen/sulfur co-doped carbon material based on hyphal bioconcentration and bioassembly, where L-cysteine and graphene oxide are added during the growth of fungal hyphae. Carbonization temperature-dependent structure and capacitance performances are discussed in detail. The results show that nitrogen/sulfur co-doped carbon obtained at carbonization temperature of 800 degrees C has high specific capacitance of 206 F g(-1) and good rate capability of 86.1% from 1 to 20 A g(-1). In addition, it shows excellent stability, including favorable temperature stability under extreme conditions (203.3 F g(-1) at 60 degrees C and 199.9 F g(-1) at 0 degrees C water bath), and superior capacitance stability of 93.4% retention after 10,000 cycles. The results indicate that the nitrogen/sulfur co-doped carbon material is a practically potential electrode material for supercapacitors.
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