Self-supported heterojunction nanofibrous membranes for high-performance flexible asymmetric capacitors

Zhang, Xunlong; Yan, Guilong; Li, Zhenyu; Chen, Jingyu; Wang, Li; Li, Han; Wu, Yuanpeng

doi:10.1016/j.apsusc.2023.159059

Cited by 2 publications

(1 citation statement)

References 59 publications

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“…In order to improve the high-rate capability, researchers have attempted to synthesize a composite composed of metal oxide and carbon material, which could possess both imaginary and real capacitance for supercapacitors [22] . Several transition metal oxides such as V 2 O 5 [23] , Fe 2 O 3 [24] , Co 3 O 4 [25] , WO 3 [26] , and CoFe 2 O 4 [27] have been widely employed for supercapacitors in order to enhance the pseudocapacitance. In particular, CoFe 2 O 4 possesses the Co (II) and Fe (III) elements severally distributed in the tetrahedral and the octahedral sites, which exhibits a large theoretical capacitance of 916 mAh/g [15] .…”

Section: Introductionmentioning

confidence: 99%

CoFe₂O₄ nanoparticles as a bifunctional agent on activated porous carbon for battery-type asymmetrical supercapacitor

Qu,

Chen,

Sun

et al. 2024

Chem Synth

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The low performance of electrode materials is the main obstacle limiting the development of the supercapacitor industry, which can be solved by doping cobalt ferrate nanoparticles (NPs) with carbon materials. Herein, the composites of CoFe2O4 based on activated carbon (AC) were successfully prepared using a one-step solvothermal method and subsequently applied in anodes of battery-type asymmetrical supercapacitors. The effect of solvothermal temperature and heating time on the composite characteristic was systematically evaluated. The electrochemical analysis in the three-electrode system revealed that modified activated carbon heated at 140 °C for 24 h (140MAC24) displayed excellent specific capacitance of 571.36 F/g at the current density of 0.2 A/g due to the synergistic effect of the double-layer and faradic capacitance. Moreover, iron and cobalt elements in CoFe2O4 could change into the oxide form to accelerate charge in potential range window of -1.0 to -0.2 V and discharge from -0.2 to 0.2 V, respectively. Meanwhile, the result of assessing economic feasibility suggested the splendid availability of 140MAC24 electrodes. Additionally, the assembled supercapacitor displayed the outstanding specific capacitance of 171.31 F/g in the potential window of 1.8 V, energy density of 43.5 Wh/kg at the current density of 0.2 A/g, and capacitance retention rate of 82.49% after 10,000 cycles. The excellent electrochemical properties demonstrated that CoFe2O4 could be used as a bifunctional agent for enhancing supercapacitive performance.

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Section: Introductionmentioning

confidence: 99%

CoFe₂O₄ nanoparticles as a bifunctional agent on activated porous carbon for battery-type asymmetrical supercapacitor

Qu,

Chen,

Sun

et al. 2024

Chem Synth

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Rational design of hierarchical crystalline/amorphous hybrid copper tetracyanoquinodimethane and CuWO4 hetero-arrays as effective electrode materials for supercapacitors

Wu,

Qiu,

Tan

et al. 2024

Journal of Power Sources

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Self-supported heterojunction nanofibrous membranes for high-performance flexible asymmetric capacitors

Cited by 2 publications

References 59 publications

CoFe₂O₄ nanoparticles as a bifunctional agent on activated porous carbon for battery-type asymmetrical supercapacitor

CoFe₂O₄ nanoparticles as a bifunctional agent on activated porous carbon for battery-type asymmetrical supercapacitor

Rational design of hierarchical crystalline/amorphous hybrid copper tetracyanoquinodimethane and CuWO4 hetero-arrays as effective electrode materials for supercapacitors

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Self-supported heterojunction nanofibrous membranes for high-performance flexible asymmetric capacitors

Cited by 2 publications

References 59 publications

CoFe2O4 nanoparticles as a bifunctional agent on activated porous carbon for battery-type asymmetrical supercapacitor

CoFe2O4 nanoparticles as a bifunctional agent on activated porous carbon for battery-type asymmetrical supercapacitor

Rational design of hierarchical crystalline/amorphous hybrid copper tetracyanoquinodimethane and CuWO4 hetero-arrays as effective electrode materials for supercapacitors

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CoFe₂O₄ nanoparticles as a bifunctional agent on activated porous carbon for battery-type asymmetrical supercapacitor

CoFe₂O₄ nanoparticles as a bifunctional agent on activated porous carbon for battery-type asymmetrical supercapacitor