Open AccessFabrication of NiFe2O4@CoFe2O4 core-shell nanofibers for high-performance supercapacitors
Author(s) -
Qing Wang,
Haoran Gao,
Xuefeng Qin,
Jianfeng Dai,
Wei-Xue Li
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ab61ba
Subject(s) - nanofiber , materials science , supercapacitor , electrospinning , fabrication , electrode , current density , capacitance , electrochemistry , core (optical fiber) , shell (structure) , metal , composite material , chemical engineering , nanotechnology , metallurgy , chemistry , polymer , physics , medicine , alternative medicine , pathology , quantum mechanics , engineering
NiFe 2 O 4 @CoFe 2 O 4 core–shell nanofibers were prepared by the co-electrospinning method. The prepared core–shell NiFe 2 O 4 @CoFe 2 O 4 nanofibers electrode has the specific capacitance of 480 Fg −1 at a current density of 1Ag −1 . After being cycled 2000 times at a current density of 5Ag −1 , the capacity of NiFe 2 O 4 @CoFe 2 O 4 core–shell nanofibers remained 87%. The electrochemical performance of the supercapacitor is improved by the synergistic action of the multi-metal and indicates that core/shell NiFe 2 O 4 @CoFe 2 O 4 nanofibers are promising materials.