Abstract
Metallic Manganese (Mn) thin films were successfully prepared by electrodeposition in butylmethylpyrrolidinium bis(trifluoromethylsulfony)imide (BMP-NTf2) ionic liquid, which has a very wide potential window extending over the reduction potential of Mn. Potentiostatic, galvanostatic, and cyclic voltammetric methods were performed to anodize the Mn films in Na 2SO4 solution. The surface morphology and crystal structure of the obtained oxides were examined by a scanning electron microscope and X-ray diffractometer, respectively. Moreover, their chemical states were also analyzed with an X-ray photoelectron spectroscopy. It was clearly confirmed that the anodization methods could affect the material characteristics of the Mn oxides and therefore their pseudo-capacitive performance. The Mn oxide anodized by the cyclic voltammetric method showed a promising specific capacitance of 355 F/g (measured in 0.1 M Na2SO4 solution at a potential scan rate of 25 mV/s). Its capacitance retained ratio after 500 charge-discharge cycles was as high as 94 %.
| Original language | English |
|---|---|
| Title of host publication | ECS Transactions - Electrochemistry of Novel Electrode Materials for Energy Conversion and Storage |
| Pages | 165-174 |
| Number of pages | 10 |
| Edition | 25 |
| DOIs | |
| Publication status | Published - 2008 Dec 22 |
| Event | Electrochemistry of Novel Electrode Materials for Energy Conversion and Storage - 211th ECS Meeting - Chicago, IL, United States Duration: 2007 May 6 → 2007 May 11 |
Publication series
| Name | ECS Transactions |
|---|---|
| Number | 25 |
| Volume | 6 |
| ISSN (Print) | 1938-5862 |
| ISSN (Electronic) | 1938-6737 |
Other
| Other | Electrochemistry of Novel Electrode Materials for Energy Conversion and Storage - 211th ECS Meeting |
|---|---|
| Country | United States |
| City | Chicago, IL |
| Period | 07-05-06 → 07-05-11 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
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Oxidation of metallic Mn thin films prepared in butyimethylpyrrolidinium bis(trifluoromethyisuifony)imide ionic liquid and the pseudo-capacitive performance of the anodized oxide electrodes. / Chang, Jeng Kuei; Huang, Chiung Hui; Tsai, Wen-Ta; Sun, I-Wen; Chen, Po Yu.
ECS Transactions - Electrochemistry of Novel Electrode Materials for Energy Conversion and Storage. 25. ed. 2008. p. 165-174 (ECS Transactions; Vol. 6, No. 25).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
TY - GEN
T1 - Oxidation of metallic Mn thin films prepared in butyimethylpyrrolidinium bis(trifluoromethyisuifony)imide ionic liquid and the pseudo-capacitive performance of the anodized oxide electrodes
AU - Chang, Jeng Kuei
AU - Huang, Chiung Hui
AU - Tsai, Wen-Ta
AU - Sun, I-Wen
AU - Chen, Po Yu
PY - 2008/12/22
Y1 - 2008/12/22
N2 - Metallic Manganese (Mn) thin films were successfully prepared by electrodeposition in butylmethylpyrrolidinium bis(trifluoromethylsulfony)imide (BMP-NTf2) ionic liquid, which has a very wide potential window extending over the reduction potential of Mn. Potentiostatic, galvanostatic, and cyclic voltammetric methods were performed to anodize the Mn films in Na 2SO4 solution. The surface morphology and crystal structure of the obtained oxides were examined by a scanning electron microscope and X-ray diffractometer, respectively. Moreover, their chemical states were also analyzed with an X-ray photoelectron spectroscopy. It was clearly confirmed that the anodization methods could affect the material characteristics of the Mn oxides and therefore their pseudo-capacitive performance. The Mn oxide anodized by the cyclic voltammetric method showed a promising specific capacitance of 355 F/g (measured in 0.1 M Na2SO4 solution at a potential scan rate of 25 mV/s). Its capacitance retained ratio after 500 charge-discharge cycles was as high as 94 %.
AB - Metallic Manganese (Mn) thin films were successfully prepared by electrodeposition in butylmethylpyrrolidinium bis(trifluoromethylsulfony)imide (BMP-NTf2) ionic liquid, which has a very wide potential window extending over the reduction potential of Mn. Potentiostatic, galvanostatic, and cyclic voltammetric methods were performed to anodize the Mn films in Na 2SO4 solution. The surface morphology and crystal structure of the obtained oxides were examined by a scanning electron microscope and X-ray diffractometer, respectively. Moreover, their chemical states were also analyzed with an X-ray photoelectron spectroscopy. It was clearly confirmed that the anodization methods could affect the material characteristics of the Mn oxides and therefore their pseudo-capacitive performance. The Mn oxide anodized by the cyclic voltammetric method showed a promising specific capacitance of 355 F/g (measured in 0.1 M Na2SO4 solution at a potential scan rate of 25 mV/s). Its capacitance retained ratio after 500 charge-discharge cycles was as high as 94 %.
UR - http://www.scopus.com/inward/record.url?scp=57649233748&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=57649233748&partnerID=8YFLogxK
U2 - 10.1149/1.2943235
DO - 10.1149/1.2943235
M3 - Conference contribution
AN - SCOPUS:57649233748
SN - 9781605603094
T3 - ECS Transactions
SP - 165
EP - 174
BT - ECS Transactions - Electrochemistry of Novel Electrode Materials for Energy Conversion and Storage
ER -