Facile synthesis of a Ni-based NiCo2O4-PANI composite for ultrahigh specific capacitance

Li, Yuankai; Zhang, Zengxing; Chen, Yi; Chen, Hongmei; Fan, Yanyun; Li, Yanfang; Cui, Danfeng; Chen, Xue

doi:10.1016/j.apsusc.2019.144646

Cited by 26 publications

(7 citation statements)

References 55 publications

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“…The possible faradic redox reaction mechanism related to the electrodes is M-O/M-O-OH (M = Ni or Co ions) in the alkaline electrolyte. 18,22,24 Figure 6B shows the CVs for NC1 electrode at different scan rates of 5 to 100 mV s À1 . The current density of CVs increases with an increase in scan rate.…”

Section: Supercapacitorsmentioning

confidence: 99%

“…is highly attracted electrode materials for electrochemical devices. 18 Among the various candidates, nickel cobaltite (NiCo 2 O 4 ) have received great attention due to their high electrochemical stability, enhanced electrical/ionic conductivity, huge theoretical capacitance, and improved catalytic activity. 19,20 Cobalt and nickel are plentiful earth-abundant materials that seem to be a promising prospect for NiCo 2 O 4 to be an extensively industrialized electrode material owing to its low cost and ecofriendliness.…”

Section: Introductionmentioning

confidence: 99%

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Hierarchical NiCo / NiO / NiCo ₂ O ₄ composite formation by solvothermal reaction as a potential electrode material for hydrogen evolutions and asymmetric supercapacitors

et al. 2021

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Electrochemical energy storage and conversion mechanisms are highly viable routes in the current scenario, and hence supercapacitor and electrolysis of water splitting have gained significant attention in recent times. Thus, transition metal nickel cobalt oxides are widely inspected as promising electrode materials for electrocatalysis and supercapacitors. However, the pure NiCo 2 O 4 was highly hindered by its widespread uses due to low electronic conductivity and deficient active edges. This study is aimed to fabricate the NiCo/NiO/NiCo 2 O 4 composite using a solvothermal process with different ratios of solvents. The inherent NiCo/NiO/NiCo 2 O 4 composite holds plentiful active edges and improved electrical conductivity than the pure. Interestingly, the electrocatalytic results revealed that the NiCo/NiO/NiCo 2 O 4 (NC) composite prepared by a solvent ratio of (dou-

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Section: Supercapacitorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hierarchical NiCo / NiO / NiCo ₂ O ₄ composite formation by solvothermal reaction as a potential electrode material for hydrogen evolutions and asymmetric supercapacitors

et al. 2021

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“…Better performance of Ni-PANI composite electrode material containing Co 3 O 4 originated from the synergetic effect of PANI, Ni and Co 3 O 4 . Nickel and Cobalt can prevent electrode polarization of the PANI and improve the power capacity of the composite materials [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

Improvement of capacitive performance of polyaniline based hybrid supercapacitor

Rahman

Joy

Uddin

et al. 2021

Heliyon

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This study focuses on synthesis of polyaniline composites and application as electrode material in the fabrication of hybrid supercapacitors. Hybrid supercapacitors were fabricated using aluminum foil as current collector, and conductive Polyaniline (PANI) composites as electrode materials. Cobalt oxide (Co 2 O 3 ), ammonium peroxydisulfate (APS) were used along with PANI in the preparation of electrodes of the supercapacitor. Polyaniline and its various composites were used in the cathode and activated carbon in the anode (positive electrodes) of the asymmetric hybrid supercapacitor. Electrochemical performance of the supercapacitors has been evaluated on the basis of capacitive properties (i.e. capacitance, energy density and power density). Area of the supercapacitor, applied voltage for charging and composition of cathode materials have been optimized in this study. The optimum area of the supercapacitor was found 30 cm 2 at optimum voltage 5 V. The result showed that supercapacitor fabricated using polyaniline (PANI) as cathode material with Al foil as current collector provided highest capacitance of 249 F/g, Energy density of 31 Wh/kg and Power density of 18 W/kg. Among various PANI composites (Ni-PANI, Cu-PANI, CNF-PANI) synthesized in this study, Ni-PANI composite showed highest capacitance of 336 F/g, energy density of 42 Wh/kg, and power density of 31 W/kg. The result indicates that Ni-PANI composite has high potential as cathode materials for the hybrid supercapacitor.

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“…Besides, PANI is one of the conducting polymers that have a unique feature like protonation mechanism and intrinsic electrical conductivity [69] . Li et al [70] . have developed NiCo 2 O 4 ‐PANI by hydrothermal and in‐situ polymerization method.…”

Section: Roadmap To High‐energy‐density Hybrid Supercapacitorsmentioning

confidence: 99%

Nickel Cobaltite: A Positive Electrode Material for Hybrid Supercapacitors

et al. 2021

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The increased demand of energy due to the recent technological advances in diverse fields such as portable electronics and electric vehicles is often hindered by the poor capability of energy‐storage systems. Although supercapacitors (SCs) exhibit higher power density than state‐of‐the art batteries, their insufficient energy density remains a major challenge. An emerging concept of hybrid supercapacitors (HSCs) with the combination of one capacitive and one battery electrode in a single cell holds a great promise to deliver high energy density without sacrificing power density and cycling stability. This Minireview elaborates the recent advances of use of nickel cobaltite (NiCo2O4) as a potential positive electrode (battery‐like) for HSCs. A brief introduction on the structural benefits and charge storage mechanisms of NiCo2O4 was provided. It further shed a light on composites of NiCo2O4 with different materials like carbon, polymers, metal oxides, and others, which altogether helps in increasing the electrochemical performance of HSCs. Finally, the key scientific challenges and perspectives on building high‐performance HSCs for future‐generation applications were reviewed.

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Facile synthesis of a Ni-based NiCo2O4-PANI composite for ultrahigh specific capacitance

Cited by 26 publications

References 55 publications

Hierarchical NiCo / NiO / NiCo ₂ O ₄ composite formation by solvothermal reaction as a potential electrode material for hydrogen evolutions and asymmetric supercapacitors

Hierarchical NiCo / NiO / NiCo ₂ O ₄ composite formation by solvothermal reaction as a potential electrode material for hydrogen evolutions and asymmetric supercapacitors

Improvement of capacitive performance of polyaniline based hybrid supercapacitor

Nickel Cobaltite: A Positive Electrode Material for Hybrid Supercapacitors

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Facile synthesis of a Ni-based NiCo2O4-PANI composite for ultrahigh specific capacitance

Cited by 26 publications

References 55 publications

Hierarchical NiCo / NiO / NiCo 2 O 4 composite formation by solvothermal reaction as a potential electrode material for hydrogen evolutions and asymmetric supercapacitors

Hierarchical NiCo / NiO / NiCo 2 O 4 composite formation by solvothermal reaction as a potential electrode material for hydrogen evolutions and asymmetric supercapacitors

Improvement of capacitive performance of polyaniline based hybrid supercapacitor

Nickel Cobaltite: A Positive Electrode Material for Hybrid Supercapacitors

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Product

Resources

About

Hierarchical NiCo / NiO / NiCo ₂ O ₄ composite formation by solvothermal reaction as a potential electrode material for hydrogen evolutions and asymmetric supercapacitors

Hierarchical NiCo / NiO / NiCo ₂ O ₄ composite formation by solvothermal reaction as a potential electrode material for hydrogen evolutions and asymmetric supercapacitors