Development of bifunctional Mo doped ZnAl2O4 spinel nanorods array directly grown on carbon fiber for supercapacitor and OER application

Gouadria, Soumaya; Abudllah, Muhammad; Ahmad, Zahoor; John, Peter; Nisa, Mehar Un; Manzoor, Sumaira; Aman, Salma; Ashiq, Muhammad Naeem; Ghori, Muhammad Ishfaq

doi:10.1016/j.ceramint.2022.09.312

Cited by 30 publications

(7 citation statements)

References 58 publications

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“…Materials that are derived from precious metals are not suitable for both the OER and HER owing to their significant price, restricted availability, and lack of adequate bifunctionality. − There is a need to conduct research on nonprecious catalysts that possess a combination of excellent catalytic performance, cheap cost, and long-lasting stability to meet the needs of industrial demand. − Metal nanocomposites have been broadly used as catalysts for the HER and the OER for several years. The nanocomposites under consideration encompass a range of materials, including hydroxides, , oxides, , carbides, − selenides, , sulfides, , and phosphates. , The abundance, cost-effectiveness, and synergistic properties of zinc metal hydroxides and oxides have drawn substantial interest as potential catalysts.…”

Section: Introductionmentioning

confidence: 99%

One-Pot Formation of an rGO-Based ZnAl₂O₄ Nanocomposite for Electrochemical Studies toward Oxygen Evolution Reactions

Helal,

Thabet,

Aman

et al. 2024

Energy Fuels

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Electrocatalysts for water (H 2 O) splitting to give oxygen (O 2 ) and hydrogen (H 2 ) fuels are challenging to build, but mixing carbon materials with transition-metal-based compounds offers an intriguing and innovative method for the development of environment-friendly fuel. Hydrothermal synthesis is a cheap and effective catalyst based on a ZnAl 2 O 4 nanocomposite anchored over reduced graphene oxide (rGO) and is presented here, along with characterization by microscopy and spectroscopy. As a possible oxygen evolution reaction (OER) electrocatalyst on nickel foam's surface (NF), the electrochemical properties of this catalyst were also studied. The electrochemical studies showed that the ZnAl 2 O 4 anchored on rGO sample exhibited high stability for the OER and an enhanced surface area, ionic conductivity, and active zones of the electrocatalyst was observed compared to that of the other investigated composites. It also exhibited an overpotential of 244 mV achieved at 10 mA cm −2 and lowered solution resistance (R s = 0.63 Ω) and charge transfer resistance (R ct = 0.6 Ω). This catalyst has a wide operating current range and, therefore, may function for long periods of time at both high and low current densities. High electrical conductivity, a larger surface area, and enriched active zones are responsible for enhancing the ZnAl 2 O 4 @ rGO composite's multifunctional qualities, as shown by the results. The electrocatalytic properties of ZnAl 2 O 4 @rGO composites were enhanced, and they exhibited a high cycling stability of 50 h even after the 5000th cycle due to the combined influence of these surface features. The present investigation has revealed that the ZnAl 2 O 4 @rGO nanocomposite demonstrates significant versatility, making it highly suitable for various fields related to sustainable and renewable energy. This suggests that it could be employed in developing an efficient and promising electrode for the OER, thereby paving the way for new possibilities.

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Section: Introductionmentioning

confidence: 99%

One-Pot Formation of an rGO-Based ZnAl₂O₄ Nanocomposite for Electrochemical Studies toward Oxygen Evolution Reactions

Helal,

Thabet,

Aman

et al. 2024

Energy Fuels

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“…In recent years, the energy crisis has been worsening and the environment has been gradually destroyed. 1 Hydrogen (H 2 ) is regarded as an ideal energy source because of its clean and renewable characteristics. 2 As one of the production methods of hydrogen, electrocatalytic water-splitting has become very attractive.…”

Section: Introductionmentioning

confidence: 99%

An in situ formed ZIF-67 derived NiFeCo-P nano-array for accelerating the electrocatalytic oxygen evolution reaction

Guo,

Li,

Wang

et al. 2024

Energy Adv.

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“…On the other hand, tellurides have been manufactured for use in O 2 evolution in both alkaline and neutral and conditions 28 . As tellurides have better band configuration with oxidation states of H 2 O, superior covalent properties, and less toxicity than sulfides and selenides, they have attracted the attention of scientists and may lead to an increase in OER 29 . It has been thought that tellurization increases the energy efficiency of water oxidation through lowering oxidation potentials of V 4+ to V 5+ 30 .…”

Section: Introductionmentioning

confidence: 99%

“…28 As tellurides have better band configuration with oxidation states of H 2 O, superior covalent properties, and less toxicity than sulfides and selenides, they have attracted the attention of scientists and may lead to an increase in OER. 29 It has been thought that tellurization increases the energy efficiency of water oxidation through lowering oxidation potentials of V 4+ to V 5+ . 30 Tellurization may also lower redox potentials of TM, 31 because tellurium already has amazing qualities, which are further enhanced by its far stronger metallic features, which provide electrocatalysts a higher degree of electrical conductivity and, as a consequence, a higher level for OER performance.…”

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confidence: 99%

Fabrication of vanadium telluride anchored on carbon nanotubes nanocomposite for overall water splitting

Bano,

Manzoor,

Sami

et al. 2024

J Am Ceram Soc.

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Electrocatalytic water splitting is an essential hydrogen production method for resolving present energy shortage and progress toward more efficient technologies. For this purpose, a versatile and cheap electrocatalysts are the main challenge along the way. In this report, we synthesized vanadium telluride and carbon nanotube (VTe–CNT)‐based nanocomposite via facile hydrothermal route. The VTe–CNTs are characterized by X‐ray diffraction analysis, scanning electron microscopy, energy‐dispersive spectroscopy, Fourier transform infrared spectroscopy, and Brunauer–Emmett–Teller. These characterizations depict nanosphere structures, morphology, and high surface area that maintains high porosity, which are essential for inclusive water‐splitting phenomena in 1.0 M solution of KOH. Additionally, the electrochemical performance of VTe–CNTs has shown best O2 evolution reactions activity with of onset potential of 1.42 V versus reversible hydrogen electrode and required 10 mA/cm2 of current density at 278 mV overpotential, which is excellent among other electrocatalysts, VTe (342 mV@10 mA/cm−2) and CNTs (365 mV@10mA/cm−2). Moreover, VTe–CNT exhibits remarkable stability for almost 20 h. It also requires a low onset potential of 0.05 V with a small Tafel slope of 47 mV/dec for H2 evolution reactions. Hence, this research might facilitate the easy transportation of electrons and open up the new era, serving as an excellent replacement for noble metal–derived materials.

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Development of bifunctional Mo doped ZnAl2O4 spinel nanorods array directly grown on carbon fiber for supercapacitor and OER application

Cited by 30 publications

References 58 publications

One-Pot Formation of an rGO-Based ZnAl₂O₄ Nanocomposite for Electrochemical Studies toward Oxygen Evolution Reactions

One-Pot Formation of an rGO-Based ZnAl₂O₄ Nanocomposite for Electrochemical Studies toward Oxygen Evolution Reactions

An in situ formed ZIF-67 derived NiFeCo-P nano-array for accelerating the electrocatalytic oxygen evolution reaction

Fabrication of vanadium telluride anchored on carbon nanotubes nanocomposite for overall water splitting

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Development of bifunctional Mo doped ZnAl2O4 spinel nanorods array directly grown on carbon fiber for supercapacitor and OER application

Cited by 30 publications

References 58 publications

One-Pot Formation of an rGO-Based ZnAl2O4 Nanocomposite for Electrochemical Studies toward Oxygen Evolution Reactions

One-Pot Formation of an rGO-Based ZnAl2O4 Nanocomposite for Electrochemical Studies toward Oxygen Evolution Reactions

An in situ formed ZIF-67 derived NiFeCo-P nano-array for accelerating the electrocatalytic oxygen evolution reaction

Fabrication of vanadium telluride anchored on carbon nanotubes nanocomposite for overall water splitting

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Product

Resources

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One-Pot Formation of an rGO-Based ZnAl₂O₄ Nanocomposite for Electrochemical Studies toward Oxygen Evolution Reactions

One-Pot Formation of an rGO-Based ZnAl₂O₄ Nanocomposite for Electrochemical Studies toward Oxygen Evolution Reactions