4.7 Article

Novel method of preparing hierarchical porous CoFe2O4 by the citric acid-assisted sol-gel auto-combustion for supercapacitors

期刊

JOURNAL OF ENERGY STORAGE
卷 35, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.est.2021.102286

关键词

CoFe2O4 The citric acid-assisted sol-gel autocombustion method; Supercapacitor

资金

  1. Natural Science Foundation of Fujian Province [2019J01800]
  2. project of Department of Education of Fujian Province [JAT160497]
  3. Science and Technology Innovation team of Longyan University [ZG2019034]

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In this study, hierarchical porous CoFe2O4 was successfully fabricated and applied as electrode for supercapacitors, showing excellent electrochemical performance. The CoFe2O4 electrode demonstrated high specific capacitance and cycling stability, making it a promising candidate for supercapacitor electrodes.
In this work, the hierarchical porous CoFe2O4 was fabricated by the citric acid-assisted sol-gel auto-combustion method. The hierarchical porous CoFe2O4 was applied as supercapacitor?s electrode and exhibited good electrochemical properties. The specific capacitance of CoFe2O4 electrode can rich 443.89 F g(-1) at current density of 1 A g(-1), and 75.12% capacitance was still retained at current density of 16 A g(-1) compared with 1 A g(-1). The cycling stability was excellent, which degraded by 20.65% after 6000 cycles. The results suggest that the synthesized hierarchical porous CoFe2O4 was a promising candidate for application to supercapacitors electrodes. Meanwhile, the novel citric acid-assisted sol-gel auto-combustion is low manufacturing cost, simple in preparation, easy to control the stoichiometric ratio, which can be further extended to synthesize other inorganic materials.

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