Remarkable capacity retention of nanostructured manganese oxide upon cycling as an electrode material for supercapacitor
| hal.structure.identifier | Solid State and Structural Chemistry Unit [SSCU] | |
| dc.contributor.author | RAGUPATHY, Pitchai | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | PARK, Dae-Hoon | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CAMPET, Guy | |
| hal.structure.identifier | Solid State and Structural Chemistry Unit [SSCU] | |
| dc.contributor.author | VASAN, H. N. | |
| hal.structure.identifier | National Nanohybrid Materials Laboratory, School of Chemistry | |
| dc.contributor.author | HWANG, Seong-Ju | |
| hal.structure.identifier | National Nanohybrid Materials Laboratory, School of Chemistry | |
| dc.contributor.author | CHOY, Jin-Ho | |
| hal.structure.identifier | Department of Inorganic and Physical Chemistry | |
| dc.contributor.author | MUNICHANDRAIAH, N. | |
| dc.date.issued | 2009 | |
| dc.identifier.issn | 1932-7447 | |
| dc.description.abstractEn | Electrochemical capacity retention of nearly X-ray amorphous nanostructured manganese oxide (nanoMnO<sub>2</sub>) synthesized by mixing directly KMnO<sub>4</sub> with ethylene glycol under ambient conditions for supercapacitor studies is enhanced significantly. Although X-ray diffraction (XRD) pattern of nanoMnO<sub>2</sub> shows poor crystallinity, it is found that by Mn K-edge X-ray absorption near edge structure (XANES) measurement that the nanoMnO<sub>2</sub> obtained is locally arranged in a δ-MnO<sub>2</sub>-type layered structure composed of edge-shared network of MnO<sub>6</sub> octahedra. Field emission scanning electron microscopy and XANES measurements show that nanoMnO<sub>2</sub> contains nearly spherical shaped morphology with δ-MnO<sub>2</sub> structure, and 1D nanorods of α-MnO<sub>2</sub> type structure (powder XRD) in the annealed (600 °C) sample. Volumetric nitrogen adsorption−desorption isotherms, inductively coupled plasma analysis, and thermal analysis are carried out to obtain physicochemical properties such as surface area (230 m<sup>2</sup> g<sup>−1</sup>), porosity of nanoMnO<sub>2</sub> (secondary mesopores of diameter 14.5 nm), water content, composition, etc., which lead to the promising electrochemical properties as an electrode for supercapacitor. The nanoMnO<sub>2</sub> shows a very high stability even after 1200 cycles with capacity retention of about 250 F g<sup>−1</sup>. | |
| dc.language.iso | en | |
| dc.publisher | American Chemical Society | |
| dc.title.en | Remarkable capacity retention of nanostructured manganese oxide upon cycling as an electrode material for supercapacitor | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1021/jp811407q | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Physical Chemistry C | |
| bordeaux.page | 6303-6309 | |
| bordeaux.volume | 113 | |
| bordeaux.issue | 15 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00380311 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00380311v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Physical%20Chemistry%20C&rft.date=2009&rft.volume=113&rft.issue=15&rft.spage=6303-6309&rft.epage=6303-6309&rft.eissn=1932-7447&rft.issn=1932-7447&rft.au=RAGUPATHY,%20Pitchai&PARK,%20Dae-Hoon&CAMPET,%20Guy&VASAN,%20H.%20N.&HWANG,%20Seong-Ju&rft.genre=article |
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