Abstract
In the present study, manganese oxide electrodes with promising pseudo-capacitive properties were prepared by electrophoretic deposition (EPD) using needle-like manganese dioxide powders. As-deposited coating exhibited a porous microstructure where the size and shape of the starting powders can be observed. The electrochemical performance of the as-deposited coating was then evaluated by cyclic voltammetry (CV) up to 300 times. The initial specific capacitance was 236 F/g which dropped to 200 F/g after 25 CV tests, and decreased gradually to 190 F/g thereafter. The electrochemical behaviors during EPD and CV were examined by synchrotron X-ray absorption spectroscopy techniques from which it was deciphered that a reduction reaction from Mn4+ to Mn3+ occurred during EPD concomitant with re-oxidization during repetitive CV cycles.
| Original language | English |
|---|---|
| Pages (from-to) | 3469-3474 |
| Number of pages | 6 |
| Journal | Ceramics International |
| Volume | 35 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Dec 2009 |
| Externally published | Yes |
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Keywords
- A. Films
- B. Spectroscopy
- B. X-ray method
- E. Capacitors
ASJC Scopus subject areas
- Ceramics and Composites
- Process Chemistry and Technology
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Materials Chemistry
Cite this
Electrophoretically deposited manganese oxide coatings for supercapacitor application. / Chen, Chin Yi; Wang, Sheng Chang; Lin, Chia Yen; Chen, Fan Shiong; Lin, Chung Kwei.
In: Ceramics International, Vol. 35, No. 8, 12.2009, p. 3469-3474.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Electrophoretically deposited manganese oxide coatings for supercapacitor application
AU - Chen, Chin Yi
AU - Wang, Sheng Chang
AU - Lin, Chia Yen
AU - Chen, Fan Shiong
AU - Lin, Chung Kwei
PY - 2009/12
Y1 - 2009/12
N2 - In the present study, manganese oxide electrodes with promising pseudo-capacitive properties were prepared by electrophoretic deposition (EPD) using needle-like manganese dioxide powders. As-deposited coating exhibited a porous microstructure where the size and shape of the starting powders can be observed. The electrochemical performance of the as-deposited coating was then evaluated by cyclic voltammetry (CV) up to 300 times. The initial specific capacitance was 236 F/g which dropped to 200 F/g after 25 CV tests, and decreased gradually to 190 F/g thereafter. The electrochemical behaviors during EPD and CV were examined by synchrotron X-ray absorption spectroscopy techniques from which it was deciphered that a reduction reaction from Mn4+ to Mn3+ occurred during EPD concomitant with re-oxidization during repetitive CV cycles.
AB - In the present study, manganese oxide electrodes with promising pseudo-capacitive properties were prepared by electrophoretic deposition (EPD) using needle-like manganese dioxide powders. As-deposited coating exhibited a porous microstructure where the size and shape of the starting powders can be observed. The electrochemical performance of the as-deposited coating was then evaluated by cyclic voltammetry (CV) up to 300 times. The initial specific capacitance was 236 F/g which dropped to 200 F/g after 25 CV tests, and decreased gradually to 190 F/g thereafter. The electrochemical behaviors during EPD and CV were examined by synchrotron X-ray absorption spectroscopy techniques from which it was deciphered that a reduction reaction from Mn4+ to Mn3+ occurred during EPD concomitant with re-oxidization during repetitive CV cycles.
KW - A. Films
KW - B. Spectroscopy
KW - B. X-ray method
KW - E. Capacitors
UR - http://www.scopus.com/inward/record.url?scp=70349236898&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70349236898&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2009.06.025
DO - 10.1016/j.ceramint.2009.06.025
M3 - Article
AN - SCOPUS:70349236898
VL - 35
SP - 3469
EP - 3474
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
IS - 8
ER -