A study of synergistic effect on oxygen reduction activity and capacitive performance of NiCo2O4/rGO hybrid catalyst for rechargeable metal-air batteries and supercapacitor applications

Padmaraj, O.; Samuel, Austin Suthanthiraraj; Yesuraj, Johnbosco; Ramanujam, Kothandaraman; Venkateswaran, C.

doi:10.1016/j.compositesb.2019.107327

Cited by 34 publications

(9 citation statements)

References 60 publications

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“…[48] NiCo 2 O 4 on further doping with rGO enhances the specific capacitance up to 1305 F g À 1 . [49] From these, we can conclude that binary metal oxides offer higher electrochemical performance. Currently, binary metal oxides are a trending topic of research for supercapacitors electrode material.…”

Section: Pseudocapacitors (Pcs)mentioning

confidence: 92%

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Recent Trends in Bimetallic Oxides and Their Composites as Electrode Materials for Supercapacitor Applications

2021

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There is a growing interest in supercapacitors as energy storage systems due to their high specific power, fast charge/discharge rates, and long cycling stability. Researchers have focused recently on developing nanomaterials to enhance the capacitive performance of supercapacitors. The inclusion of electroactive components, such as transition metal oxides (TMOs), carbonbased materials, and conducting polymers (CPs), is believed to play an important role in improving the electrochemical behavior of the electrode materials. Nevertheless, supercapacitors containing TMOs, carbon-based materials, and CPs commonly suffer from inferior ion-transport kinetics and poor electronic conductivity, which can affect the rate capability and cycling stability of the electrodes. Therefore, the development of TMO/CP and TMO/carbon-based electrode materials has gained widespread attention because they synergistically combine the advantages of both materials, enabling revolutionary applications in the electrochemical field. In general, TMOs have given good performance as electrodes for supercapacitors by further increasing the performance of the electrode when two metal cations are introduced into a single crystal structure. This Review describes and highlights recent progress in the development of bimetallic oxides regarding their design approach, configurations, and electrochemical properties for supercapacitor applications, at the same time providing new opportunities for future energy storage technologies.

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Section: Pseudocapacitors (Pcs)mentioning

confidence: 92%

“…When compared to bimetallic cobaltite, NiCo 2 O 4 showed a high specific capacitance of 440 F g −1 which is higher than that of single metal oxide with doping [48] . NiCo 2 O 4 on further doping with rGO enhances the specific capacitance up to 1305 F g −1 [49] …”

Section: Types Of Electrode Materialsmentioning

confidence: 93%

Recent Trends in Bimetallic Oxides and Their Composites as Electrode Materials for Supercapacitor Applications

2021

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“…However, the practical application of Ptbased electrocatalysts is limited by the insufficiency of Earth's reserves, high-cost, and poor durability. [19][20][21][22][23] To this end, it is the inevitable choice of exploring new high-efficiency non-noble metal electrocatalysts for ORR.…”

Section: Furthermore the Home-made Zn-air Batteries With D-zif As Aimentioning

confidence: 99%

Linker Defects Triggering Boosted Oxygen Reduction Activity of Co/Zn‐ZIF Nanosheet Arrays for Rechargeable Zn–Air batteries

Yang

Xie

Liu

et al. 2020

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The poor electronic conductivity and low intrinsically electrocatalytic activity of most metal–organic frameworks (MOFs) greatly limit their direct applications as oxygen reduction reaction (ORR) electrocatalysts. In this work, it is reported that introduction of linker defects can effectively trigger the ORR activity of leaf‐shaped zeolitic imidazolate framework (ZIF) by increasing the intrinsic activity of metal sites and electrical conductivity. Experimental results show that part of imidazole molecules is successfully removed from ZIF after a low‐temperature thermal treatment without destroying its structure integrity, resulting in the formation of unsaturated metal sites and faster electron transport rate. Consequently, the ZIF with imidazole molecules defects (D‐ZIF) exhibits a superior ORR activity than the pristine ZIF, possessing an onset potential of 0.86 V and higher half‐wave potential of 0.60 V. Furthermore, the home‐made Zn–air batteries with D‐ZIF as air cathode exhibit high open‐circuit voltage and well cycling stability. The developed linker‐deficient modulation strategy can provide a new prospect to enable MOF‐based electrocatalysts with efficient catalytic activity.

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“…8,20,21 The improvement in the electrochemical performance of the electrode material is mostly concerned with the rational design of crystal structure and morphology. Thus, NiCo 2 O 4 with diverse morphologies such as nanosheet, 22 nanoneedle, 23 nanowire, 24 nanosphere, 25 nanorod, 26 nanoower, 27 nanober 28 have been explored and synthesized by different methods like hydrothermal, 29,30 chemical vapor deposition (CVD), 31 sputtering, 32 chemical bath deposition (CBD), 33 screen printing, 34 solvothermal, 35 electrodeposition 36 and spray pyrolysis. 37 However, most of these methods are multi-step, time-consuming, and complex which increases the cost of supercapacitor device fabrication.…”

Section: Introductionmentioning

confidence: 99%

Marigold micro-flower like NiCo₂O₄ grown on flexible stainless-steel mesh as an electrode for supercapacitors

et al. 2021

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A study of synergistic effect on oxygen reduction activity and capacitive performance of NiCo2O4/rGO hybrid catalyst for rechargeable metal-air batteries and supercapacitor applications

Cited by 34 publications

References 60 publications

Recent Trends in Bimetallic Oxides and Their Composites as Electrode Materials for Supercapacitor Applications

Recent Trends in Bimetallic Oxides and Their Composites as Electrode Materials for Supercapacitor Applications

Linker Defects Triggering Boosted Oxygen Reduction Activity of Co/Zn‐ZIF Nanosheet Arrays for Rechargeable Zn–Air batteries

Marigold micro-flower like NiCo₂O₄ grown on flexible stainless-steel mesh as an electrode for supercapacitors

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A study of synergistic effect on oxygen reduction activity and capacitive performance of NiCo2O4/rGO hybrid catalyst for rechargeable metal-air batteries and supercapacitor applications

Cited by 34 publications

References 60 publications

Recent Trends in Bimetallic Oxides and Their Composites as Electrode Materials for Supercapacitor Applications

Recent Trends in Bimetallic Oxides and Their Composites as Electrode Materials for Supercapacitor Applications

Linker Defects Triggering Boosted Oxygen Reduction Activity of Co/Zn‐ZIF Nanosheet Arrays for Rechargeable Zn–Air batteries

Marigold micro-flower like NiCo2O4 grown on flexible stainless-steel mesh as an electrode for supercapacitors

Contact Info

Product

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About

Marigold micro-flower like NiCo₂O₄ grown on flexible stainless-steel mesh as an electrode for supercapacitors