| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Mushroom Derived Carbon Material with High Specific Capacitance |
| ZHANG Wenlin1,2, RAN Fen1,2
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1 State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China
2 School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China |
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Abstract In this paper, the carbon materials were prepared by high temperature heat treatment and KOH activation with three different kinds of mushrooms as precursors, the prepared carbon materials were used as electrochemical active substances and further used as electrodes and assemble supercapacitors. The results of scanning electron microscope (SEM) showed that the structure of the mushroom carbon was bulk, and a large number of pore structures appeared on the surface after modification. Nitrogen adsorption and desorption curves and the pore size distribution further indicated the significant changes of specific surface area and the porosity. The electrochemical performances of the materials were analyzed by cyclic voltammograms (CV), galvanostatic charge-discharge (GCD) and the electrochemical impedance spectroscopy (EIS) in 6 mol/L KOH electrolyte solution. All three carbon materials exhibited excellent electrochemical performance. The capacitance of the carbon material derived from pleurotus eryngii up to 427 F/g at the current density of 0.5 A/g. In addition, at a power density of 150 W/kg, the supercapacitor device delivers a high energy density of 7.8 Wh/kg.
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Published: 29 May 2020
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| Fund:This work was financially supported by the National Natural Science Foundation of China (51203071, 51763014), the Program for Hongliu DistinguishedYoung Scholars in Lanzhou University of Technology, joint fund between Shenyang National Laboratory for Materials Science and State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology (18LHPY002). |
About author:: Wenlin Zhang, master degree candidate, pupil of professor Fen Ran, mainly engaged in supercapacitor electrode materials research.
Fen Ran, is currently a professor at Lanzhou University of Technology, and “Feitian Scholar” of Gansu Pro-vince. He received Ph.D. degree from State Key Laboratory of Polymer Materials Engineering, Sichuan University, worked as visiting scholar at National University of Singapore, University of California Santa Cruz, and University of California Santa Barbara. He now is the editorial board of Electronic Components and Materials, and committee member of Blood Purification Materials, Chinese Society for Biomaterials. He is mainly working on polymer based energy materials and biomedical polymers. |
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2020, Vol. 34 
