A comparative study on the supercapacitive behaviour of solvothermally prepared metal ferrite (MFe2O4, M = Fe, Co, Ni, Mn, Cu, Zn) nanoassemblies

Aparna, M.; Grace, Andrews Nirmala; Sathyanarayanan, P.; Sahu, Niroj Kumar

doi:10.1016/j.jallcom.2018.02.127

Cited by 125 publications

(55 citation statements)

References 49 publications

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“…are increasingly gaining the limelight of today's research field as they have unique surface, optical, electrical, magnetic and others properties [1][2][3][4][5][6][7] that are limited to their nano regime but found to be almost insignificant in their bulk counterparts. Because of their exceptional properties in comparison to their difference [6] in bulk analogue, semiconductor photocatalyst materials are potentially used in various applications like solar cells [8], electrode materials [9,10], sensors [11,12], optical imagings [13], UV absorbers [14], photo-catalysis [15][16][17][18][19] etc. [2].…”

Section: Introductionmentioning

confidence: 99%

Effect of induced defects on the properties of ZnO nanocrystals: surfactant role and spectroscopic analysis

2019

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Semiconductor photocatalysts are one of the major sought area of research due to their extensive use in the degradation of organic pollutants under UV-visible and solar light. Herein, we are reporting the synthesis of microscopic spindle shaped ZnO photocatalysts with different reducing agents such as sodium hydroxide, hydrazine hydride, sodium borohydride and lithium triethyl borohydride. These spindle shaped ZnO are synthesized by facile soft chemical approach by varying reducing agents with fixed molar ratio at 1:2 zinc precursor to reducing agents. These ZnOs were thoroughly characterised by various sophisticated characterization techniques such as XRD, FTIR, SEM, and HRTEM, Raman and ESR spectroscopies. Microscopic results show that these ZnO show similar fusiform morphologies with the variation in sizes and their distributions, and hence possess different defect related properties. The structural growth mechanism and defect related properties were explained on the basis of different reducing abilities of reducing agents (different reaction pH) and their nucleation with the aid of morphological analysis, and ESR analysis. Furthermore, the photocatalytic activity of these spindle shaped ZnO were evaluated against two cationic dyes (methylene blue dyes, Rhodamine B) under UV light. The photocatalytic results show that these spindle shaped ZnO are very effective for the photo-catalytic degradation of methylene blue and rhodamine B dye under the illumination of UV light.

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Section: Introductionmentioning

confidence: 99%

Effect of induced defects on the properties of ZnO nanocrystals: surfactant role and spectroscopic analysis

2019

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“…Meanwhile, spinel (AB 2 O 4 ) type TTMOs (e.g. NiCo 2 O 4 , NiFe 2 O 4 , and CoMn 2 O 4 ) have been widely investigated for electrochemical capacitor applications. TTMOs have extremely high theoretical capacitance (≈3000 F g −1 ) because the mass transportation, ion diffusion, and electron transfer have all been promoted.…”

Section: Introductionmentioning

confidence: 99%

“…[10][11][12][13] Currently,t ransition metal oxides( TMOs), especially ternary transition metal oxides( TTMOs), have becomeo ne of the hot topicsi nt he fieldo fe lectrode materials, owing to their multiple oxidation states, low cost, environmental friendliness,a nd high naturala bundance.M eanwhile, spinel (AB 2 O 4 )t ype TTMOs( e.g. NiCo 2 O 4 , [14][15][16] NiFe 2 O 4 , [17][18][19] and CoMn 2 O 4 ) [20][21][22] have been widely investigated for electrochemicalc apacitor applications.T TMOsh ave extremely high theoretical capacitance ( % 3000 Fg À1 )b ecause the mass transportation, ion diffusion, and electron transferh avea ll been promoted. Furthermore, the size and morphology of TTMOs electrode materials also have an effectontheir capacitance.…”

Section: Introductionmentioning

confidence: 99%

One‐Step Controllable Synthesis of Mesoporous MgCo₂O₄ Nanosheet Arrays with Ethanol on Nickel Foam as an Advanced Electrode Material for High‐Performance Supercapacitors

Teng

Zhang

et al. 2018

Chemistry A European J

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In recent years, ternary transition metal oxides (TTMOs), especially spinel type TTMOs have attracted widespread attention as promising candidates for electrode materials. Among all of the popular TTMOs, MgCo O is an outstanding one, owing to its superior theoretical capacitance. In this work, MgCo O nanosheet arrays (NSAs) grown directly on nickel foams were fabricated through a facile hydrothermal process at 120 °C for 4 h. With a series of structural and morphological characterization techniques, it was found that the ethanol played a key role in controlling the composition and morphology during the synthesis process. The MgCo O NSAs exhibited a superior specific capacitance of 853.06 C g (at 1 mA cm ) and enhanced cycling performance, with 94.65 % of initial capacitance retained after 3000 cycles when used as a binder-free integrated electrode for electrochemical supercapacitors; much higher than other reported data for MgCo O as well. The excellent electrochemical properties mainly came from the unique morphology of the MgCo O NSAs. This study will demonstrate the applications of MgCo O NSAs based large-scale supercapacitors grown on low-cost nickel foams.

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“…It is a paramount requirement to test the cycling stability and durability of supercapacitor electrode materials to ensure their good performance, especially during long-term use. This test has been performed using cyclic voltammetry, 30 where the ZMS electrode was subjected to 1000 CV cycles at a scan rate of 50 mV s À1 . Fig.…”

Section: Supercapacitive Performancementioning

confidence: 99%

Mesoporous ZnMoS₄ as a supercapacitor electrode material with battery-like behavior

et al. 2019

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A comparative study on the supercapacitive behaviour of solvothermally prepared metal ferrite (MFe2O4, M = Fe, Co, Ni, Mn, Cu, Zn) nanoassemblies

Cited by 125 publications

References 49 publications

Effect of induced defects on the properties of ZnO nanocrystals: surfactant role and spectroscopic analysis

Effect of induced defects on the properties of ZnO nanocrystals: surfactant role and spectroscopic analysis

One‐Step Controllable Synthesis of Mesoporous MgCo₂O₄ Nanosheet Arrays with Ethanol on Nickel Foam as an Advanced Electrode Material for High‐Performance Supercapacitors

Mesoporous ZnMoS₄ as a supercapacitor electrode material with battery-like behavior

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A comparative study on the supercapacitive behaviour of solvothermally prepared metal ferrite (MFe2O4, M = Fe, Co, Ni, Mn, Cu, Zn) nanoassemblies

Cited by 125 publications

References 49 publications

Effect of induced defects on the properties of ZnO nanocrystals: surfactant role and spectroscopic analysis

Effect of induced defects on the properties of ZnO nanocrystals: surfactant role and spectroscopic analysis

One‐Step Controllable Synthesis of Mesoporous MgCo2O4 Nanosheet Arrays with Ethanol on Nickel Foam as an Advanced Electrode Material for High‐Performance Supercapacitors

Mesoporous ZnMoS4 as a supercapacitor electrode material with battery-like behavior

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A comparative study on the supercapacitive behaviour of solvothermally prepared metal ferrite (MFe2O4, M = Fe, Co, Ni, Mn, Cu, Zn) nanoassemblies

One‐Step Controllable Synthesis of Mesoporous MgCo₂O₄ Nanosheet Arrays with Ethanol on Nickel Foam as an Advanced Electrode Material for High‐Performance Supercapacitors

Mesoporous ZnMoS₄ as a supercapacitor electrode material with battery-like behavior