Synthesis of Manganese Oxides by Reduction of KMnO4with KBH4in Aqueous Solutions

Tsang, C.; Kim, J.; Manthiram, Arumugam

doi:10.1006/jssc.1997.7656

Cited by 56 publications

(34 citation statements)

References 24 publications

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“…Several typical techniques reported in the literature are thermal decomposition, co-precipitation, sol-gel processes, electrodeposition, mechanical milling processes, and hydrothermal synthesis. 50,54,269,273,278,280,288,302,311,[335][336][337][338] Among these, the hydrothermal route has been proven to be an effective and controllable method to produce Mn oxides with various nanostructures such as nanowhiskers, nanoplates, and nanorods. 302,311,339 Note that the mechanical milling process can lead to a sequential phase transition from g-MnO 2 to the thermodynamically stable a-Mn 2 O 3 and subsequently to Mn 3 O 4 , depending on the duration of mechanical grinding.…”

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confidence: 99%

A review of electrode materials for electrochemical supercapacitors

2012

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Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/eng/view/object/?id=72117dd4-3024-4aa6-be53-472cfb3e5a2a http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/voir/objet/?id=72117dd4-3024-4aa6-be53-472cfb3e5a2a In this critical review, metal oxides-based materials for electrochemical supercapacitor (ES) electrodes are reviewed in detail together with a brief review of carbon materials and conducting polymers. Their advantages, disadvantages, and performance in ES electrodes are discussed through extensive analysis of the literature, and new trends in material development are also reviewed. Two important future research directions are indicated and summarized, based on results published in the literature: the development of composite and nanostructured ES materials to overcome the major challenge posed by the low energy density of ES (476 references).

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confidence: 99%

A review of electrode materials for electrochemical supercapacitors

2012

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“…These reductants were used for the rapid and complete reduction of KMnO 4 precursor, as reported previously [27,28,30]. Another merit of using these reductants is the fine-control of the crystal structure of the obtained amorphous materials via the change of reductant concentration and reaction time [28]. First, 0.1 M aqueous KBH 4 solution was prepared by dissolving KBH 4 powder in 0.01 M KOH solution to prevent the hydrolysis of borohydride.…”

Section: Synthesismentioning

confidence: 99%

“…In the present work, X-ray amorphous nanocrystalline manganese oxides are synthesized by a soft-chemical redox reaction of KMnO 4 with KBH 4 [28] or LiI at room temperature whereas a wellcrystallized homologue is prepared by conventional solid state reaction [29]. The local crystal structure, chemical bonding nature, and crystal morphology of the obtained X-ray amorphous and well-crystallized manganese oxides are studied with diffraction, spectroscopic, and microscopic tools.…”

Section: Introductionmentioning

confidence: 99%

The beneficial effect of nanocrystalline and amorphous nature on the anode performance of manganese oxide for lithium ion batteries

Kim

Adpakpang

et al. 2015

Electrochimica Acta

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“…Manganese oxides, including MnO, MnO 2 , Mn 2 O 3 , and Mn 3 O 4 , are of considerable importance in many applications, such as ion-exchange, molecular adsorption, catalysis, electrochemistry, and magnetism, due to their structural flexibility with novel chemical and physical properties [1][2][3][4]. Among these manganese oxides, Mn 2 O 3 is well known as a cheap and environment-friendly catalyst.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Mn2O3 catalyst with core–shell structure via spray pyrolysis assisted with glucose

Huo

Zhang

et al. 2009

Res Chem Intermed

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A novel core-shell Mn 2 O 3 catalyst is obtained by facile spray pyrolysis assisted with glucose acting as a structure-directing agent. The detail characterizations include X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption/desorption isotherms, and the thermogravimetric method (TG/DTA). In the probe test of the aqueous degradation of methylene blue (MB), the high catalytic peroxidization activity of core-shell Mn 2 O 3 catalyst, compared to the commercial Mn 2 O 3 , is attributed to the high crystallization of a-Mn 2 O 3 , the large surface area that resulted from the coreshell structure with porous architecture, and the special core-shell structure that acted as a micro-reactor.

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Synthesis of Manganese Oxides by Reduction of KMnO4with KBH4in Aqueous Solutions

Cited by 56 publications

References 24 publications

A review of electrode materials for electrochemical supercapacitors

A review of electrode materials for electrochemical supercapacitors

The beneficial effect of nanocrystalline and amorphous nature on the anode performance of manganese oxide for lithium ion batteries

Preparation of Mn2O3 catalyst with core–shell structure via spray pyrolysis assisted with glucose

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