High Capacitance of Electrodeposited MnO[sub 2] by the Effect of a Surface-Active Agent

Devaraj, S.; Munichandraiah, N.

doi:10.1149/1.1922869

Cited by 200 publications

(124 citation statements)

References 26 publications

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“…286,348 Increase in the surface areas of MnO x materials can also be realized by introducing Co into MnO x or by adding a surfactant such as sodium lauryl sulfate or Triton X-100. 268,283,331 In addition, hierarchical hollow nanospheres of MnO x yielded a specific surface area of 253 m 2 g À1 .…”

Section: Challenges For Mn Oxidesmentioning

confidence: 99%

“…Normally, the specific capacitance of a metal oxide material will increase significantly as its surface area increases. 268,331 For example, a fibrous electrode has a high surface area and contains more active sites for redox reactions. At the same time, the porous structure of the material can offer more channels for the electrolyte, leading to less electrochemical polarization and therefore minimal dissolution of Mn oxide.…”

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confidence: 99%

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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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Section: Challenges For Mn Oxidesmentioning

confidence: 99%

mentioning

confidence: 99%

A review of electrode materials for electrochemical supercapacitors

2012

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“…However, EMD SDS50 shows gradual loss in discharge capacity with charge-discharge cycling due to higher concentration of surfactant resulting in lesser surface area with anisotropic crystal orientation. 59 The surfactant molecules in the electrolytic bath favor the adsorption process of Mn 2+ ions at the electrode interface which precedes the redox process resulting in higher porous nature during the preparation of MnO 2 . The electrodeposited MnO 2 in the presence of the surfactant possess high surface area relative to the material prepared in the absence of the surfactant.…”

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confidence: 99%

Dual Effect of Anionic Surfactants in the Electrodeposited MnO₂Trafficking Redox Ions for Energy Storage

Biswal

Tripathy

Subbaiah

et al. 2014

J. Electrochem. Soc.

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The dual effect of in-situ addition of anionic surfactants, sodium octyl sulfate (SOS), sodium dodecyl sulfate (SDS) and sodium tetradecyl sulfate (STS) on the microstructure and electrochemical properties of electrolytic manganese dioxide (EMD) produced from waste low grade manganese residue is discussed. X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), BET-surface area studies, thermogravimetry-differential thermal analysis (TG-DTA) and Fourier transform infrared spectroscopy (FTIR) were used to determine the structure and chemistry of the EMD. All EMD samples were found to contain predominantly γ-phase MnO 2 , which is electrochemically active for energy storage applications. FESEM images showed that needle, rod and flower shaped nano-particles with a porous surface and platy nano-particles were obtained in the case of EMD deposited with and without surfactant respectively. Thermal studies showed loss of structural water and formation of lower manganese oxides indicating high stability of the EMD samples. The cyclic voltammetry and charge -discharge characteristics implied the presence of surfactants enhances the energy storage within the MnO 2 structure. Addition of the surfactant at its optimum concentration greatly increased the EMD surface area, which in turn improved the cycle life of the EMD cathode. EMD obtained in the presence of 25, 50, 25 ppm of SOS, SDS, and STS respectively showed an improved cycle life relative to the EMD obtained in the absence of surfactant. EMD obtained without surfactant showed a capacity fade of 20 mAh g −1 within 15 discharge-charge cycles, while surfactant modified samples showed stable cyclic behavior of capacity 95 mAh g −1 even after 15 cycles. Global demand for new energy materials and energy storage devices is increasing rapidly and in parallel with the quest for alternative energy resources. Substantial research and development effort continues to be invested in the synthesis of an economically viable, ecofriendly storage device from a natural source. Among the various energy storage devices, alkaline rechargeable batteries have become the ultimate choice for energy storage systems in the portable electronics market as well as electric transport systems.1-3 Worldwide research and development programs in this area have been underway for more than a century, 2 with most attention focused on Zn-Mn, Ni-Cd, Ni-Fe, Ni-Zn, Ni-MH, and Li-ion rechargeable systems.4 Among these, ZnMn alkaline batteries have held a strong position in the battery market for many decades.Manganese dioxide, used as the active material in Zn-MnO 2 batteries, can be prepared both by chemical synthesis (chemical manganese dioxide, CMD) or electrochemical deposition (electrodeposited manganese dioxide, EMD) methods. Adequate primary Mn resources are available from which manganese dioxide can be produced, but the rapidly growing demand for manganese/manganese oxide has made it increasingly important to develop processes for economic recovery of manganese from low-grade mang...

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“…In order to maximize the specific capacitance of MnO 2 several treatments have been evaluated including the surface modification of MnO 2 , the preparation of binary oxides of manganese, and the preparation of hybrid nanoarchitectured MnO 2 [223,[226][227][228]. While considerable performance variations exist, in neutral aqueous electrolytes coarse powdered MnO 2 generally shows a specific capacitance of around 150 F g −1 within an operating voltage window of ∼1 V.…”

Section: Nickel Oxide (Nio) and Nickel Hydroxide (Ni(oh) 2 )mentioning

confidence: 99%

General Properties of Electrochemical Capacitors

et al. 2013

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High Capacitance of Electrodeposited MnO[sub 2] by the Effect of a Surface-Active Agent

Cited by 200 publications

References 26 publications

A review of electrode materials for electrochemical supercapacitors

A review of electrode materials for electrochemical supercapacitors

Dual Effect of Anionic Surfactants in the Electrodeposited MnO₂Trafficking Redox Ions for Energy Storage

General Properties of Electrochemical Capacitors

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High Capacitance of Electrodeposited MnO[sub 2] by the Effect of a Surface-Active Agent

Cited by 200 publications

References 26 publications

A review of electrode materials for electrochemical supercapacitors

A review of electrode materials for electrochemical supercapacitors

Dual Effect of Anionic Surfactants in the Electrodeposited MnO2Trafficking Redox Ions for Energy Storage

General Properties of Electrochemical Capacitors

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Product

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Dual Effect of Anionic Surfactants in the Electrodeposited MnO₂Trafficking Redox Ions for Energy Storage