Pseudocapacitive behavior of ferrimagnetic NiFe2O4-carbon nanotube electrodes prepared with a multifunctional dispersing agent

Nawwar, Mohamed; Sahu, Rakesh P.; Puri, Ishwar K.; Zhitomirsky, Igor

doi:10.1016/j.oceram.2021.100127

Cited by 23 publications

(5 citation statements)

References 71 publications

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“…38 The transition in the electrode material's valance state, which causes an electron transfer, is the principal behind the charge storage process. 39 Improving pseudocapacitance behavior results in a novel, varied strategy that advances the supercapacitor's ability to accumulate charges and store them. Pseudocapacitive materials have almost the same electrical responses as EDLC materials.…”

Section: Introductionmentioning

confidence: 99%

“…The material goes through a quick and highly reversible redox reaction when an electrode receives voltage 38 . The transition in the electrode material's valance state, which causes an electron transfer, is the principal behind the charge storage process 39 . Improving pseudocapacitance behavior results in a novel, varied strategy that advances the supercapacitor's ability to accumulate charges and store them.…”

Section: Introductionmentioning

confidence: 99%

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Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance

Diantoro

Istiqomah

Fath

et al. 2023

Int J Applied Ceramic Tech

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The development of materials and electrochemical energy storage (EES) technologies are currently taking the lead and showing excellent performance in the global effort to tackle the issues of sustainable energy supply. Supercapacitors have been widely studied among the EES technologies as they exhibit quick charging rates under high‐power conditions. Manganese dioxide (MnO2) has attracted renewed interest as a promising material due to its high theoretical capacitance and high energy density. However, the widespread application is immediately impacted by low conductivity. Hence, combining nanomaterials and various morphologies of MnO2 can improve the electrochemical performance of supercapacitors. This paper presents a review based on the composites of nanomaterials/MnO2 with various morphologies. Their mechanism and practical applications in supercapacitors are introduced in detail. Finally, the challenges and next steps in developing MnO2 electrode materials are proposed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance

Diantoro

Istiqomah

Fath

et al. 2023

Int J Applied Ceramic Tech

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“…It is known that o-benzoquinone participates in polymerization reactions, including chemical oxidative polymerization [ 29 ], electrochemical oxidative polymerization [ 30 ], and bipolar electropolymerization [ 27 ], to be used in a variety of biomedical applications including targeted drug delivery to cancer cells [ 31 ], catechol-modified polymers with antimicrobial properties [ 32 ], and structural adhesives for tissue and bone [ 33 ]. Catechol molecules can play an additional role as charge-transfer mediators [ 34 ]. The use of catecholate dopants for polypyrrole facilitated charge transfer, reduced electropolymerization potential, and allowed the fabrication of adherent polypyrrole films on non-noble substrates [ 35 , 36 , 37 ].…”

Section: Introductionmentioning

confidence: 99%

Supercapacitor Performance of Magnetite Nanoparticles Enhanced by a Catecholate Dispersant: Experiment and Theory

2023

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The full potential of Fe3O4 for supercapacitor applications can be achieved by addressing challenges in colloidal fabrication of high active mass electrodes. Exceptional adsorption properties of catecholate-type 3,4-dihydroxybenzoic acid (DHBA) molecules are explored for surface modification of Fe3O4 nanoparticles to enhance their colloidal dispersion as verified by sedimentation test results and Fourier-transform infrared spectroscopy measurements. Electrodes prepared in the presence of DHBA show nearly double capacitance at slow charging rates as compared to the control samples without the dispersant or with benzoic acid as a non-catecholate dispersant. Such electrodes with active mass of 40 mg cm−2 show a capacitance of 4.59 F cm−2 from cyclic voltammetry data at a scan rate of 2 mV s−1 and 4.72 F cm−2 from galvanostatic charge–discharge data at a current density of 3 mA cm−2. Experimental results are corroborated by density functional theory (DFT) analysis of adsorption behaviour of DHBA and benzoic acid at the (001) surface of Fe3O4. The strongest adsorption energy (ca. −1.8 eV per molecule) is due to the catechol group of DHBA. DFT analysis provides understanding of the basic mechanism of DHBA adsorption on the surface of nanoparticles and opens the way for fabrication of electrodes with high capacitance.

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“…Recently, significant interest has been generated in magnetically ordered pseudocapacitors (MOPC) [3], which combine advanced magnetic and electrical charge storage properties. Pseudocapacitive properties of such materials are related to the redox reactions of metal ions.…”

Section: Introductionmentioning

confidence: 99%

Magnetic CuFe2O4 Nanoparticles with Pseudocapacitive Properties for Electrical Energy Storage

2022

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This investigation is motivated by increasing interest in the development of magnetically ordered pseudocapacitors (MOPC), which exhibit interesting magnetocapacitive effects. Here, advanced pseudocapacitive properties of magnetic CuFe2O4 nanoparticles in negative potential range are reported, suggesting that CuFe2O4 is a promising MOPC and advanced negative electrode material for supercapacitors. A high capacitance of 2.76 F cm−2 is achieved at a low electrode resistance in a relatively large potential window of 0.8 V. The cyclic voltammograms and galvanostatic charge–discharge data show nearly ideal pseudocapacitive behavior. Good electrochemical performance is achieved at a high active mass loading due to the use of chelating molecules of ammonium salt of purpuric acid (ASPA) as a co-dispersant for CuFe2O4 nanoparticles and conductive multiwalled carbon nanotube (MCNT) additives. The adsorption of ASPA on different materials is linked to structural features of ASPA, which allows for different interaction and adsorption mechanisms. The combination of advanced magnetic and pseudocapacitive properties in a negative potential range in a single MOPC material provides a platform for various effects related to the influence of pseudocapacitive/magnetic properties on magnetic/pseudocapacitive behavior.

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Pseudocapacitive behavior of ferrimagnetic NiFe2O4-carbon nanotube electrodes prepared with a multifunctional dispersing agent

Cited by 23 publications

References 71 publications

Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance

Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance

Supercapacitor Performance of Magnetite Nanoparticles Enhanced by a Catecholate Dispersant: Experiment and Theory

Magnetic CuFe2O4 Nanoparticles with Pseudocapacitive Properties for Electrical Energy Storage

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Pseudocapacitive behavior of ferrimagnetic NiFe2O4-carbon nanotube electrodes prepared with a multifunctional dispersing agent

Cited by 23 publications

References 71 publications

Potential of MnO2‐based composite and numerous morphological for enhancing supercapacitors performance

Potential of MnO2‐based composite and numerous morphological for enhancing supercapacitors performance

Supercapacitor Performance of Magnetite Nanoparticles Enhanced by a Catecholate Dispersant: Experiment and Theory

Magnetic CuFe2O4 Nanoparticles with Pseudocapacitive Properties for Electrical Energy Storage

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Product

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Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance

Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance