In-situ generated Mn3O4-reduced graphene oxide nanocomposite for oxygen reduction reaction and isolated reduced graphene oxide for supercapacitor applications

Jha, Plawan Kumar; Kashyap, Varchaswal; Gupta, Kriti; Kumar, Vikash; Debnath, A.K.; Roy, Debashree; Rana, Shammi; Kurungot, Sreekumar; Ballav, Nirmalya

doi:10.1016/j.carbon.2019.08.012

Cited by 40 publications

(11 citation statements)

References 38 publications

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“…Besides, even at the same high power density of 30 kW kg –1 , the energy density of the DAA-GHF-based device is still almost double that of the GHF-based SC, realizing the goal of improving energy density without the reduction of power density. Besides, compared with other recently reported SC devices listed in Table S1, − the DAA-GHF-based SC also shows higher performance.…”

Section: Resultsmentioning

confidence: 71%

Graphene Hydrogel Film Adsorbed with Redox-Active Molecule Toward Energy Storage Device with Improved Energy Density and Unfading Superior Rate Capability

Jiang

Zhu

et al. 2020

ACS Sustainable Chem. Eng.

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Energy storage device (ESD) with enhanced energy density is desired in this electronics era, but it is often achieved at the compensation of the reduction of rate capability. To address this challenge, a hierarchical graphene hydrogel film (GHF) adsorbed with redox-active diaminoanthraquinone (DAA) molecule (DAA-GHF) was designed. The resulting DAA-GHF shows a large specific surface area and hierarchical porous structure, which can offer extra multiple charge storage and simultaneously guarantee rapid electron and ion transportation. Using the synergistic effect of DAA and GHF, DAA-GHF shows a significantly enhanced capacitance of 394.3 F g −1 at 1 A g −1 in supercapacitors and 172.3 mAh g −1 at 0.2 A g −1 in Zn ion batteries (ZIBs). Moreover, the rate capability for DAA-GHF-based supercapacitor and ZIB maintains outstanding, remaining 69.3% for supercapacitor and 52.5% for ZIB when the current density increased to 100 and 30 A g −1 , respectively. Accordingly, ZIB achieves an ultrahigh power density of 28.1 kW kg −1 and presents excellent capacity retention of 92.5% after 5000 cycles. Besides, the flexible solid-state ZIB shows stable capacity under various bending states or after 500 times bending. This strategy provides a new path for fabricating highperformance films for future flexible electronic products.

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Section: Resultsmentioning

confidence: 71%

Graphene Hydrogel Film Adsorbed with Redox-Active Molecule Toward Energy Storage Device with Improved Energy Density and Unfading Superior Rate Capability

Jiang

Zhu

et al. 2020

ACS Sustainable Chem. Eng.

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“…More recently, PVA-based electrode materials have also been further developed and used for driving energy conversion, and have achieved outstanding electrocatalytic performance. [118][119][120][121][122][123][124][125][126][127][128]…”

Section: Co 2 Reduction Reactionmentioning

confidence: 99%

Recent progress on polyvinyl alcohol-based materials for energy conversion

Qiao

Ding

2022

New J. Chem.

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“…The reaction is exothermic (ΔE=1.23 V) yet it is kinetically slow, which has prompted much investigation to develop new catalyst materials. The reaction is efficiently catalyzed on platinum surfaces; however, platinum is expensive, limited to acidic conditions, and is susceptible to ‘poisoning’ from alcohols (a likely feedstock in fuel cells) [2–34] . First‐row transition metal oxides and mixed‐metal oxides are attractive candidates, [5,6] and among these, Mn 3 O 4 has received increasing attention [7–11] .…”

Section: Introductionmentioning

confidence: 99%

“…First‐row transition metal oxides and mixed‐metal oxides are attractive candidates, [5,6] and among these, Mn 3 O 4 has received increasing attention [7–11] . Recent advances in Mn 3 O 4 electrocatalysts yield active materials due to several innovations, including the use of active support materials such as porous carbon and graphenes, control of the Mn 3 O 4 morphology (especially nanoparticle Mn 3 O 4 ), and altering the surface properties of nanostructured Mn 3 O 4 (Table S1) [9,12–54] …”

Section: Introductionmentioning

confidence: 99%

A pH‐Universal Hollow‐Mn₃O₄/MWCNT/Nafion™ Modified Glassy Carbon Electrode for Electrochemical Oxygen Reduction

et al. 2021

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Hollow Mn 3 O 4 nanoparticles (diameter = 31 nm, cavity diameter = 16 nm, and shell thickness = 7 nm) were attached to the surface of multiwall carbon nanotubes (MWCNT). A suspension of hollow Mn 3 O 4 /MWCNT with Nafion™ was dropcast onto a glassy carbon electrode, and the electrochemical reduction of oxygen in aqueous solution was investigated with this electrode. We assess the role of MWCNT, hollow Mn 3 O 4 , and Nafion™ in the performance of the electrode, and investigate the kinetics of the oxygen reduction reaction. The electrode exhibits outstanding performance in measures of cathodic current density and onset potential, and performed similarly well in acidic, neutral, and alkaline conditions.

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In-situ generated Mn3O4-reduced graphene oxide nanocomposite for oxygen reduction reaction and isolated reduced graphene oxide for supercapacitor applications

Cited by 40 publications

References 38 publications

Graphene Hydrogel Film Adsorbed with Redox-Active Molecule Toward Energy Storage Device with Improved Energy Density and Unfading Superior Rate Capability

Graphene Hydrogel Film Adsorbed with Redox-Active Molecule Toward Energy Storage Device with Improved Energy Density and Unfading Superior Rate Capability

Recent progress on polyvinyl alcohol-based materials for energy conversion

A pH‐Universal Hollow‐Mn₃O₄/MWCNT/Nafion™ Modified Glassy Carbon Electrode for Electrochemical Oxygen Reduction

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In-situ generated Mn3O4-reduced graphene oxide nanocomposite for oxygen reduction reaction and isolated reduced graphene oxide for supercapacitor applications

Cited by 40 publications

References 38 publications

Graphene Hydrogel Film Adsorbed with Redox-Active Molecule Toward Energy Storage Device with Improved Energy Density and Unfading Superior Rate Capability

Graphene Hydrogel Film Adsorbed with Redox-Active Molecule Toward Energy Storage Device with Improved Energy Density and Unfading Superior Rate Capability

Recent progress on polyvinyl alcohol-based materials for energy conversion

A pH‐Universal Hollow‐Mn3O4/MWCNT/Nafion™ Modified Glassy Carbon Electrode for Electrochemical Oxygen Reduction

Contact Info

Product

Resources

About

A pH‐Universal Hollow‐Mn₃O₄/MWCNT/Nafion™ Modified Glassy Carbon Electrode for Electrochemical Oxygen Reduction