Hydrothermal synthesis of γ-MnOOH nanorods and their conversion to MnO2, Mn2O3, and Mn3O4 nanorods

Lan, Leilei; Li, Quanjun; Gu, Guang-Rui; Zhang, Huafang; Liu, Bingbing

doi:10.1016/j.jallcom.2015.05.078

Cited by 69 publications

(29 citation statements)

References 51 publications

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“…Previous studies have shown that the spinels The 30-50 nm Mn3O4 nanorods used in our work were prepared by two-phase approach. 33 The first step is to prepare γ-MnOOH nanorods as precursor by hydrothermal method. Then, the γ-MnOOH nanorods were calcinated at 400 ℃ in argon for 4 h in argon gas for converting into Mn3O4 nanorods.…”

Section: Introductionmentioning

confidence: 99%

Size and morphology effects on the high pressure behaviors of Mn₃O₄ nanorods

Liu

Dong

et al. 2020

Nanoscale Adv.

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Section: Introductionmentioning

confidence: 99%

Size and morphology effects on the high pressure behaviors of Mn₃O₄ nanorods

Liu

Dong

et al. 2020

Nanoscale Adv.

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“…As the reaction time is prolonged, lamellar MnOOH nano-structures will be re-dissolved and then grow into small nanowires as a result of the anisotropic growth [31,32]. The small nanowires prefer to combine with each other and grow into larger and longer nano-columns by the oriented attachment along their side surfaces [33]. As Mn 2+ partially formed by further reduction of MnOOH, some octahedron-like Mn 3 O 4 nanostructures began to occur.…”

Section: Microstructure and Morphologymentioning

confidence: 99%

Study on the Synthesis of Mn3O4 Nanooctahedrons and Their Performance for Lithium Ion Batteries

et al. 2020

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Among the transition metal oxides, the Mn3O4 nanostructure possesses high theoretical specific capacity and lower operating voltage. However, the low electrical conductivity of Mn3O4 decreases its specific capacity and restricts its application in the energy conversion and energy storage. In this work, well-shaped, octahedron-like Mn3O4 nanocrystals were prepared by one-step hydrothermal reduction method. Field emission scanning electron microscope, energy dispersive spectrometer, X-ray diffractometer, X-ray photoelectron spectrometer, high resolution transmission electron microscopy, and Fourier transformation infrared spectrometer were applied to characterize the morphology, the structure, and the composition of formed product. The growth mechanism of Mn3O4 nano-octahedron was studied. Cyclic voltammograms, galvanostatic charge–discharge, electrochemical impedance spectroscopy, and rate performance were used to study the electrochemical properties of obtained samples. The experimental results indicate that the component of initial reactants can influence the morphology and composition of the formed manganese oxide. At the current density of 1.0 A g−1, the discharge specific capacity of as-prepared Mn3O4 nano-octahedrons maintains at about 450 mAh g−1 after 300 cycles. This work proves that the formed Mn3O4 nano-octahedrons possess an excellent reversibility and display promising electrochemical properties for the preparation of lithium-ion batteries.

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“…Preparation of manganese oxide supported on PGS 33 PEG, 34 carbon. 35 In this article, the manganese oxide/PGS composite electrodes were prepared with hydrothermal method by using KMnO 4 as manganese source.…”

Section: Experimental Preparation Of Poly Glucose (Pgs)mentioning

confidence: 99%

Support Effect on the Structure and Properties of Manganese Oxide Electrode Materials

Wu¹,

Han²,

Wang³

et al. 2017

Quim. Nova

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The composite electrode material of manganese oxide supported on poly glucose (PGS) was prepared by using KMnO 4 as manganese source. In order to study the influence of the support on the structure and properties of the composite electrode materials, the changes of the composition of the composite electrode materials were investigated in different weight ratio of KMnO 4 /PGS (3:1, 3:3, 3:5, 3:7, 3:9). The characterization results of XRD, Raman special and XPS indicated the composition of manganese oxides was greatly influenced by the content of PGS. When the PGS content is lower, the composition of manganese oxide in hybrid material is single-component oxide (MnOOH or Mn 3 O 4 ). With the increasing PGS content, a mixture of Mn 3 O 4 and MnCO 3 was observed, furthermore proportion of MnCO 3 in mixture also increased, and up to higher PGS content (KMnO 4 /PGS=3:9), single-component MnCO 3 was founded on hybrid material. In addition, the change of composition of hybrid materials also led to an obvious difference in electrochemical performance. With the increase of PGS content, the specific capacitance of hybrid materials increases firstly, and reaches the maximum with the weight ratio of KMnO 4 /PGS equal to 3:3, and then gradually decreases. This was attributed to the higher electrochemical performance of Mn 3 O 4 than that of MnOOH and MnCO 3 .

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Hydrothermal synthesis of γ-MnOOH nanorods and their conversion to MnO2, Mn2O3, and Mn3O4 nanorods

Cited by 69 publications

References 51 publications

Size and morphology effects on the high pressure behaviors of Mn₃O₄ nanorods

Size and morphology effects on the high pressure behaviors of Mn₃O₄ nanorods

Study on the Synthesis of Mn3O4 Nanooctahedrons and Their Performance for Lithium Ion Batteries

Support Effect on the Structure and Properties of Manganese Oxide Electrode Materials

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Hydrothermal synthesis of γ-MnOOH nanorods and their conversion to MnO2, Mn2O3, and Mn3O4 nanorods

Cited by 69 publications

References 51 publications

Size and morphology effects on the high pressure behaviors of Mn3O4 nanorods

Size and morphology effects on the high pressure behaviors of Mn3O4 nanorods

Study on the Synthesis of Mn3O4 Nanooctahedrons and Their Performance for Lithium Ion Batteries

Support Effect on the Structure and Properties of Manganese Oxide Electrode Materials

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Size and morphology effects on the high pressure behaviors of Mn₃O₄ nanorods

Size and morphology effects on the high pressure behaviors of Mn₃O₄ nanorods