Construction of FeCo2O4@N-Doped Carbon Dots Nanoflowers as Binder Free Electrode for Reduction and Oxidation of Water

Kundu, Aniruddha; Robby, Akhmad Irhas; Shit, Arnab; Jo, Hyeong Jun; Park, Soo Jung

doi:10.3390/ma13143119

Cited by 23 publications

(12 citation statements)

References 82 publications

(90 reference statements)

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“…The nitrate salts were dissolved in 35 mL of water with 4 gm of urea (CO(NH 2 ) 2 ) and stirred for 30 min. The solution was then transferred to a 45 mL Teflon-lined autoclave and maintained at 120 • C for 17 h, followed by a natural cooling to room temperature [33]. The precipitates were washed with distilled water and acetone several times by centrifugation and then dried for 12 h at 80 • C under vacuum.…”

Section: Synthesismentioning

confidence: 99%

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Electrochemical Performance of Iron-Doped Cobalt Oxide Hierarchical Nanostructure

et al. 2021

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In this study, hydrothermally produced Fe-doped Co3O4 nanostructured particles are investigated as electrocatalysts for the water-splitting process and electrode materials for supercapacitor devices. The results of the experiments demonstrated that the surface area, specific capacitance, and electrochemical performance of Co3O4 are all influenced by Fe3+ content. The FexCo3-xO4 with x = 1 sample exhibits a higher BET surface (87.45 m2/g) than that of the pristine Co3O4 (59.4 m2/g). Electrochemical measurements of the electrode carried out in 3 M KOH reveal a high specific capacitance of 153 F/g at a current density of 1 A/g for x = 0.6 and 684 F/g at a 2 mV/s scan rate for x = 1.0 samples. In terms of electrocatalytic performance, the electrode (x = 1.0) displayed a low overpotential of 266 mV (at a current density of 10 mA/cm2) along with 52 mV/dec Tafel slopes in the oxygen evolution reaction. Additionally, the overpotential of 132 mV (at a current density of 10 mA/cm2) and 109 mV with 52 mV/dec Tafel slope were obtained for x = 0.6 sample towards hydrogen evolution reaction (HER). According to electrochemical impedance spectroscopy (EIS) measurements and the density functional theory (DFT) study, the addition of Fe3+ increased the conductivity at the electrode–electrolyte interface, which substantially impacted the high activity of the iron-doped cobalt oxide. The electrochemical results revealed that the mesoporous Fe-doped Co3O4 nanostructure could be used as potential electrode material in the high-performance electrochemical capacitor and water-splitting catalysts.

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Section: Synthesismentioning

confidence: 99%

“…transferred to a 45 mL Teflon-lined autoclave and maintained at 120 °C for 17 h, followed by a natural cooling to room temperature [33]. The precipitates were washed with distilled water and acetone several times by centrifugation and then dried for 12 h at 80 °C under vacuum.…”

Section: Synthesismentioning

confidence: 99%

Electrochemical Performance of Iron-Doped Cobalt Oxide Hierarchical Nanostructure

et al. 2021

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“…With the increasing of the energy consumption and severe destruction of environment, green renewable energy is urgently needed to be developed and utilized [ 1 , 2 ] Hydrogen is confirmed to be the most reasonable and ideal energy carrier to replace fossil fuels [ 3 , 4 , 5 ]. Among many ways to produce hydrogen, electrochemical hydrolysis is considered to be the most desirable way and of great interest to researchers because of its high hydrogen purity, abundant source materials, and large-scale production [ 6 , 7 ]. Water splitting involves two important half reactions: Water oxidation (OER) and hydrogen evolution reaction (HER).…”

Section: Introductionmentioning

confidence: 99%

Fe(III) Ions-Assisted Aniline Polymerization Strategy to Nitrogen-Doped Carbon-Supported Bimetallic CoFeP Nanospheres as Efficient Bifunctional Electrocatalysts toward Overall Water Splitting

Zhao

Wei

et al. 2021

Materials

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It remains an urgent demand and challenging task to design and fabricate efficient, stable, and inexpensive catalysts toward sustainable electrochemical water splitting for hydrogen production. Herein, we explored the use of Fe(III) ion-assisted aniline polymerization strategy to embed bimetallic CoFeP nanospheres into the nitrogen-doped porous carbon framework (referred CoFeP-NC). The as-prepared CoFeP-NC possesses excellent hydrogen evolution reaction (HER) performance with the small overpotential (η10) of 81 mV and 173 mV generated at a current density of 10 mA cm−2 in acidic and alkaline media, respectively. Additionally, it can also efficiently catalyze water oxidation (OER), which shows an ideal overpotential (η10) of 283 mV in alkaline electrolyte (pH = 14). The remarkable catalytic property of CoFeP-NC mainly stems from the strong synergetic effects of CoFeP nanospheres and carbon network. On the one hand, the interaction between the two can make better contact between the electrolyte and the catalyst, thereby providing a large number of available active sites. On the other hand, it can also form a network to offer better durability and electrical conductivity (8.64 × 10−1 S cm−1). This work demonstrates an efficient method to fabricate non-noble electrocatalyst towards overall water splitting, with great application prospect.

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“…Varun Rai and co-workers [92] carried out the OER studies using a series of MCo [20] stated that FeCo 2 O 4 nanoplate executed better OER performance (10 mA cm À 2 of current density at an overpotential of 164 mV in alkaline media) amongst all the mixed-metal-organic framework-based catalysts as is clear from the linear sweep voltammetry (LSV) plot in Figure 11-b. Kundu et al [93] further studied the water splitting reaction using the novel FeCo 2 O 4 @N-Doped Carbon Dots (CD) nanoflowers, which performed better as binder-free electrode than FeCo 2 O 4 in alkaline medium for reduction (HER) and oxidation of water (OER). This can be accredited to the high number of exposed active sites due to CDs which enhanced the electron transfer process and subsequently promoted the electrochemical reaction.…”

Section: Feco 2 O 4 For Electrocatalytic Water Splitting and Fuel Cell Applicationsmentioning

confidence: 99%

“…stated that FeCo 2 O 4 nanoplate executed better OER performance (10 mA cm −2 of current density at an overpotential of 164 mV in alkaline media) amongst all the mixed‐metal‐organic framework‐based catalysts as is clear from the linear sweep voltammetry (LSV) plot in Figure 11‐b. Kundu et al [93] . further studied the water splitting reaction using the novel FeCo 2 O 4 @N‐Doped Carbon Dots (CD) nanoflowers, which performed better as binder‐free electrode than FeCo 2 O 4 in alkaline medium for reduction (HER) and oxidation of water (OER).…”

Section: Electrochemical Applications Of Feco2o4mentioning

confidence: 99%

Advances in Electrochemical and Catalytic Performance of Nanostructured FeCo₂O₄ and Its Composites

Shetgaonkar

Salkar

Morajkar

2021

Chemistry An Asian Journal

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It is well established that the excessive and uncontrolled use of fossil fuels and organic chemicals have put a risk to the earth‘s environment and the life that sustains within it. Carbon‐free, sustainable, alternative energy technologies have therefore become the prime focus of current research. Smart inorganic materials have emerged as the potential solution to suffice energy needs and remediate the organic pollutants discharged to the environment. One such promising, versatile material is FeCo2O4 which has gained immense research interest in the present decade due to its high efficiency and performance in energy and environmental applications. Innovative material design strategies involving the interplay of nanostructured morphology, chemical composition, redox surface states, and defect engineering have significantly enhanced both electrochemical and catalytic properties of FeCo2O4. Therefore, this review article aims to provide the first‐ever comprehensive account of the latest research and developments in design‐synthesis strategies, characterization techniques, and applications of nanostructured FeCo2O4 and its composites in various electrochemical as well as catalytic applications. A detailed account of the nanostructured FeCo2O4 and its composites in various energy storage and conversion devices such as supercapacitors (SCs), batteries, and fuel cells has been presented. Furthermore, a special section has been devoted to highlight the role of FeCo2O4 in enhancing the sluggish reaction kinetics of oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in water splitting application. This review also highlights the role of nanostructured FeCo2O4 in photocatalytic waste water treatment, gas sensing, and dual‐phase membrane technologies wherein FeCo2O4 has demonstrated promising performance.

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Construction of FeCo2O4@N-Doped Carbon Dots Nanoflowers as Binder Free Electrode for Reduction and Oxidation of Water

Cited by 23 publications

References 82 publications

Electrochemical Performance of Iron-Doped Cobalt Oxide Hierarchical Nanostructure

Electrochemical Performance of Iron-Doped Cobalt Oxide Hierarchical Nanostructure

Fe(III) Ions-Assisted Aniline Polymerization Strategy to Nitrogen-Doped Carbon-Supported Bimetallic CoFeP Nanospheres as Efficient Bifunctional Electrocatalysts toward Overall Water Splitting

Advances in Electrochemical and Catalytic Performance of Nanostructured FeCo₂O₄ and Its Composites

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Construction of FeCo2O4@N-Doped Carbon Dots Nanoflowers as Binder Free Electrode for Reduction and Oxidation of Water

Cited by 23 publications

References 82 publications

Electrochemical Performance of Iron-Doped Cobalt Oxide Hierarchical Nanostructure

Electrochemical Performance of Iron-Doped Cobalt Oxide Hierarchical Nanostructure

Fe(III) Ions-Assisted Aniline Polymerization Strategy to Nitrogen-Doped Carbon-Supported Bimetallic CoFeP Nanospheres as Efficient Bifunctional Electrocatalysts toward Overall Water Splitting

Advances in Electrochemical and Catalytic Performance of Nanostructured FeCo2O4 and Its Composites

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Advances in Electrochemical and Catalytic Performance of Nanostructured FeCo₂O₄ and Its Composites