Surface modified zinc ferrite as a carbon-alternative negative electrode for high-energy hybrid supercapacitor

Shinde, Abhijeet V.; Patil, Swati J.; Hwang, Seung‐Kyu; Raju, Ganji Seeta Rama; Huh, Yun‐Suk; Han, Young‐Kyu; Chodankar, Nilesh R.

doi:10.1016/j.ceramint.2021.02.213

Cited by 9 publications

(2 citation statements)

References 40 publications

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“…The cations occupy two different positions in a spinel structure: tetrahedral (Zn) and octahedral (Fe) sites along the face-centered cubic lattice formed by O 2 - cations. The use of bimetallic oxides as electrode materials could enhance both electrical conductivity by two orders of magnitude and electrochemical activity versus materials prepared with unitary metal oxides [ 54 , 55 ].…”

Section: Introductionmentioning

confidence: 99%

Voltammetric determination of vitamin B6 in the presence of vitamin C based on zinc ferrite nano-particles modified screen-printed graphite electrode

2023

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The zinc ferrite nano-particles (ZnFe2O4) modified screen-printed graphite electrode (ZnFe2O4/SPGE) was used for the voltammetric determination of vitamin B6 in real samples, using differential pulse voltammetry (DPV). It has been found that the oxidation of vitamin B6 at the surface of such an electrode occurs at a potential about 150 mV less positive compared to an unmodified screen-printed graphite electrode. After optimization, a vitamin B6 sensor with a linear range from 0.8 to 585.0 µM and a detection limit of 0.17 µM. The ZnFe2O4/SPGE sensor exhibits good resolution between the voltammetric peaks of vitamin B6 and vitamin C, making it suitable for detecting vitamin B6 in the presence of vitamin C in real samples.

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Section: Introductionmentioning

confidence: 99%

Voltammetric determination of vitamin B6 in the presence of vitamin C based on zinc ferrite nano-particles modified screen-printed graphite electrode

2023

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“…Among them, the spinel ferrites-MFe 2 O 4 (M = Co, Cu, Ni, among others)-and their composites have been implemented as potential materials for SCs applications due to their low-cost production features [11,12]. For such purposes, Zn-based ferrites are widely considered as electrode materials for storage issues due to their redox properties, chemical stability, non-toxicity, and high storage capacity [13][14][15][16]. Additionally, they present singular electronic and magnetic properties, flexible synthesis routes, high abundance, and biocompatibility.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Cellulose Nanofibers-Mediated Synthesis of Uniform Spinel Zn-Ferrites Nanocorals for High Performances in Supercapacitors

Teixeira

Lima

Rosado

et al. 2023

IJMS

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Spinel ferrites are versatile, low-cost, and abundant metal oxides with remarkable electronic and magnetic properties, which find several applications. Among them, they have been considered part of the next generation of electrochemical energy storage materials due to their variable oxidation states, low environmental toxicity, and possible synthesis through simple green chemical processing. However, most traditional procedures lead to the formation of poorly controlled materials (in terms of size, shape, composition, and/or crystalline structure). Thus, we report herein a cellulose nanofibers-mediated green procedure to prepare controlled highly porous nanocorals comprised of spinel Zn-ferrites. Then, they presented remarkable applications as electrodes in supercapacitors, which were thoroughly and critically discussed. The spinel Zn-ferrites nanocorals supercapacitor showed a much higher maximum specific capacitance (2031.81 F g−1 at a current density of 1 A g−1) than Fe2O3 and ZnO counterparts prepared by a similar approach (189.74 and 24.39 F g−1 at a current density of 1 A g−1). Its cyclic stability was also scrutinized via galvanostatic charging/discharging and electrochemical impedance spectroscopy, indicating excellent long-term stability. In addition, we manufactured an asymmetric supercapacitor device, which offered a high energy density value of 18.1 Wh kg−1 at a power density of 2609.2 W kg−1 (at 1 A g−1 in 2.0 mol L−1 KOH electrolyte). Based on our findings, we believe that higher performances observed for spinel Zn-ferrites nanocorals could be explained by their unique crystal structure and electronic configuration based on crystal field stabilization energy, which provides an electrostatic repulsion between the d electrons and the p orbitals of the surrounding oxygen anions, creating a level of energy that determines their final supercapacitance then evidenced, which is a very interesting property that could be explored for the production of clean energy storage devices.

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Ferrite and Molybdate‐Based Nanostructured Materials for Supercapacitor Applications

Uke,

Mardikar

2024

Nanostructured Materials for Energy Storage

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Surface modified zinc ferrite as a carbon-alternative negative electrode for high-energy hybrid supercapacitor

Cited by 9 publications

References 40 publications

Voltammetric determination of vitamin B6 in the presence of vitamin C based on zinc ferrite nano-particles modified screen-printed graphite electrode

Voltammetric determination of vitamin B6 in the presence of vitamin C based on zinc ferrite nano-particles modified screen-printed graphite electrode

Sustainable Cellulose Nanofibers-Mediated Synthesis of Uniform Spinel Zn-Ferrites Nanocorals for High Performances in Supercapacitors

Ferrite and Molybdate‐Based Nanostructured Materials for Supercapacitor Applications

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