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Chemistry and Industry of Forest Products ›› 2018, Vol. 38 ›› Issue (5): 9-16.doi: 10.3969/j.issn.0253-2417.2018.05.002

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Preparation and Electrochemical Performances of Fe3O4@C Nanosheet Electrode Material for Supercapacitors

WANG Ao, SUN Kang, JIANG Jianchun   

  1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
  • Received:2018-06-22 Online:2018-10-25 Published:2018-11-06

Abstract: Two dimensional Fe3O4@C nanosheet was prepared by facile and effective in situ deposition crystallization followed by pyrolysis route using sucrose as carbon source and sodium chloride as template. The structure and electrochemical energy storage properties of Fe3O4@C nanosheet were characterized. The results showed that Fe3O4@C nanosheet is made of 2D graphitic carbon nanosheets, which uniform Fe3O4 nanoparticles were embedded. The thickness of Fe3O4@C nanosheet was less than 100 nm with the specific surface area 255 m2/g and average pore size 3.79 nm, and the mass fraction of Fe3O4 was 36.98%. Besides, the results of the electrochemical energy storage performance showed that Fe3O4@C nanosheet exhibited high specific capacitance and excellent rate capability (436 F/g at 1 A/g, and still up to 332 F/g at 20 A/g). However, the cycle stability of it was poor, over 500 cycles at 10 A/g, the specific capacitance dropped to 178 F/g, only 50.71% of the initial value.

Key words: supercapacitor, Fe3O4, carbon nanosheets, electrode materials, cycling stability

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