Structural characterization of hydrothermally synthesized MnO<sub>2</sub>nanorods

A’yuni, Dewi Qurrota; Alkian, Ilham; Sya’diyah, F K; Kadarisman,; Darari, Alfin; Gunawan, Vincensius; Subagio, Agus

doi:10.1088/1742-6596/909/1/012004

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…However, manufacturing nanorods is slightly tricky because it controls two morphology points, the diameter and the length of particles. The synthesis methods that can be used are microwave‐assisted, 96 one‐step synthesis (simple redox reaction) 97 metal reduction, 98 ultrasonic, 99 sol–gel, 100 gliding arc plasma, 101 and hydrothermal 102–104 . The hydrothermal method can produce uniform nanorod morphology 104 .…”

Section: Synthesis Methods Of Mno2 With Various Morphologiesmentioning

confidence: 99%

“…The synthesis methods that can be used are microwave-assisted, 96 one-step synthesis (simple redox reaction) 97 metal reduction, 98 ultrasonic, 99 sol-gel, 100 gliding arc plasma, 101 and hydrothermal. [102][103][104] The hydrothermal method can produce uniform nanorod morphology. 104 This method uses MnSO 4 ⋅H 2 O as a precursor in DI water, then Na 2 S 2 O 8 and AgNO 3 were added as reducing agents.…”

Section: Mno 2 Nanorodsmentioning

confidence: 99%

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Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance

Diantoro

Istiqomah

Fath

et al. 2023

Int J Applied Ceramic Tech

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The development of materials and electrochemical energy storage (EES) technologies are currently taking the lead and showing excellent performance in the global effort to tackle the issues of sustainable energy supply. Supercapacitors have been widely studied among the EES technologies as they exhibit quick charging rates under high‐power conditions. Manganese dioxide (MnO2) has attracted renewed interest as a promising material due to its high theoretical capacitance and high energy density. However, the widespread application is immediately impacted by low conductivity. Hence, combining nanomaterials and various morphologies of MnO2 can improve the electrochemical performance of supercapacitors. This paper presents a review based on the composites of nanomaterials/MnO2 with various morphologies. Their mechanism and practical applications in supercapacitors are introduced in detail. Finally, the challenges and next steps in developing MnO2 electrode materials are proposed.

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Section: Synthesis Methods Of Mno2 With Various Morphologiesmentioning

confidence: 99%

Section: Mno 2 Nanorodsmentioning

confidence: 99%

Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance

Diantoro

Istiqomah

Fath

et al. 2023

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

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Structural and Morphological Properties of MnO2/MWCNT Composite Grown Using the Hydrothermal Method for Supercapacitor Application

Subagio¹

2019

International Journal of Electrochemical Science

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Manganese dioxide and multi-walled carbon nanotubes (MWCNT) have received considerable recent interest for their potential application in supercapacitors, MnO2 as a pseudocapacitor material and MWCNT as an electrochemical double layer capacitance (EDLC) material. The combination of MnO2 and MWCNT is expected to make promising supercapacitor electrodes. In this study, MnO2 was mixed with MWCNT during the hydrothermal process. The difficulty in obtaining MnO2/MWCNT composite homogeneity in the hydrothermal process provides a challenge to scaling up production. KMnO4 and MWCNT were mixed with 20 mL distilled water and stirred using a magnetic stirrer for 2 minutes, then placed into an autoclave. Heating of autoclave was carried out at 160°C for 3 hours in an oven and followed by cooling at room temperature naturally. Manganese dioxide/MWCNT composites were made in 1:1 and 3:1 ratios. The diffraction peaks of composites indicated that incorporation of MWCNT into MnO2 has provided a crystalline orientation derived from MnO2 and MWCNT. Scanning electron microscopy and TEM imaging demonstrated that MnO2/MWCNT 3:1 composite attained better homogeneity than MnO2/MWCNT 1:1 as indicated by the attachment of MnO2 to the entire nanotubes surface of MWCNT. Increasing of conductivity values have been supported by MWCNT marked decreasing in the Rct value in electrochemical impedence spectroscopy measurements. Based on cyclic voltammogram measurements, the MnO2/MWCNT electrode 3:1 produced specific capacitation (Cs) of 252 F/g with stability up to 1000 cycles.

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Structural characterization of hydrothermally synthesized MnO₂nanorods

Cited by 2 publications

References 14 publications

Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance

Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance

Structural and Morphological Properties of MnO2/MWCNT Composite Grown Using the Hydrothermal Method for Supercapacitor Application

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Structural characterization of hydrothermally synthesized MnO2nanorods

Cited by 2 publications

References 14 publications

Potential of MnO2‐based composite and numerous morphological for enhancing supercapacitors performance

Potential of MnO2‐based composite and numerous morphological for enhancing supercapacitors performance

Structural and Morphological Properties of MnO2/MWCNT Composite Grown Using the Hydrothermal Method for Supercapacitor Application

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Product

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Structural characterization of hydrothermally synthesized MnO₂nanorods

Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance

Potential of MnO₂‐based composite and numerous morphological for enhancing supercapacitors performance