Abstract
A mild hydrothermal process is applied to synthesize hydrous ruthenium–tin binary oxides (Ru0.7Sn0.3O2·nH2O) with good capacitive performance in alkaline system. Then, a symmetric electrochemical capacitor (EC) is fabricated based on the as-synthesized Ru0.7Sn0.3O2·nH2O material and 1 M KOH aqueous electrolyte. Electrochemical performance of the symmetric EC is investigated by cyclic voltammetry, galvanostatic charge–discharge and electrochemical impedance spectroscopy tests. Electrochemical tests demonstrate that the symmetric EC surprisingly can operate with a high upper cell voltage limit of 1.45 V in 1 M KOH electrolyte. Maximum specific capacitance and energy density of the symmetric aqueous EC are approximately 160 F/g and 21 Wh/kg, respectively, delivered at a current density of 1.25 A/g. And the specific energy density decreases to approximately 15 Wh/kg when the specific power density increases up to approximately 1,770 W/kg. The promising specific energy and power densities are obtained simultaneously for the unwonted symmetric EC due to its larger operating potential range. Moreover, the symmetric EC exhibits electrochemical stability with 85.2% of the initial capacitance over consecutive 1,000 cycle numbers.
Similar content being viewed by others
Abbreviations
- ECs:
-
electrochemical capacitors
- EIS:
-
electrochemical impedance spectroscopy
- CV:
-
cyclic voltammetry
- SC:
-
specific capacitance
- SED:
-
specific energy density
- SPD:
-
specific power density
- ECPs:
-
electrical conducting polymers
- PANI:
-
polyaniline
- Ppy:
-
polypyrrole
- PEDOT:
-
poly(3,4-ethy-lenedioxythiophene)
- RT:
-
room temperature
- AB:
-
acetylene black
- PTFE:
-
polytetrafluoroethylene
- EDAX:
-
energy-dispersive analysis by X-ray
- HRTEM:
-
high-resolution transmission electron microscope
References
Conway BE (1991) J Electrochem Soc 138:1539
Wang YG, Zhang XG (2004) Electrochim Acta 49:1957
Wang YG, Wang ZD, Xia YY (2005) J Power Sources 50:5641
Cottineau T, Toupin M, Delahaye T, Brousse T, Bélanger D (2006) Appl Phys A82:599
Ganesh V, Pitchumani S, Lakshminarayanan V (2006) J Power Sources 158:1523
Homenko VK, Raymundo-Pinero E, Frackowiak E, Béguin F (2006) Appl Phys A82:567
Frackowiak E, Béguin F (2001) Carbon 39:937
Zheng JP, Jow TR (1997) J Electrochem Soc 144:2417
Balducci A, Dugas R, Taberna PL, Simon P, Plée D, Mastragostino M, Passerini S (2007) J Power Sources 165:922
Chang KH, Hu CC (2005) Electrochim Acta 50:2573
Hu CC, Wang CC, Chang KH (2007) Electrochim Acta 52:2691
Hu CC, Chang KH, Wang CC (2007) Electrochim Acta 52:4411
Hu CC, Chuang PY, Wu YT (2005) J Electrochem Soc 152:A370
Soudan P, Gaudet J, Guay D, Bélanger D, Schulz R (2002) Chem Mater 14:1210
Yokoshima K, Shibutani T, Hirota M, Sugimoto W, Murakami Y, Takasu Y (2006) J Power Sources 160:1480
Li J, Wang XY, Huang QH, Dai CL, Gamboa S, Sebastian PJ (2007) J Appl Electrochem 37(10):1129 DOI 10.1007/s10800-007-9372-7
Liu Y, Zhao WW, Zhang XG (2007) Electrochim Acta DOI 10.1016/j.electacta.2007.11.022
Gao B, Zhang XG, Yuan CZ, Li J, Yu L (2006) Electrochim Acta 52:1028
Bonnefoi L, Simon P, Fauvarque JF, Sarrazin C, Sarrau JF, Dugast A (1999) J Power Sources 80:149
Bonnefoi L, Simon P, Fauvarque JF, Sarrazin C, Dugast A (1999) J Power Sources 79:37
Lufrano F, Staiti P, Minutoli M (2004) J Electrochem Soc 151:A64
Jiang JH, Kucernak A (2002) Electrochim Acta 47:2381
Liang YY, Li HL, Zhang XG (2008) Mater Sci Eng A 473:317
Wang YG, Cheng L, Xia YY (2006) J Power Sources 153:191
Yuan CZ, Zhang XG, Wu QF, Gao B (2006) Solid State Ionics 177:1237
Wang YG, Wang ZD, Xia YY (2005) Electrochim Acta 50:5641
Michael MS, Prabaharan SR (2004) J Power Sources 136:250
Yuan CZ, Gao B, Zhang XG (2007) J Power Sources 173:606
Trasatti S (1991) Electrochim Acta 36:225
Hu CC, Lee CH, Wen TC (1996) J Appl Electrochem 26:72
Wen TC, Hu CC (1992) J Electrochem Soc 139:2158
Onuchukwu AI, Trasatti S (1991) J Appl Electrochem 21:858
Comninellis CH, Verchsi GP (1991) J Appl Electrochem 21:136
Lin SM, Wen TC (1993) J Electrochem Soc 140:2265
Abbizzani C, Mastragostino M, Meneghello L (1995) Electrochim Acta 40:2223
Feng T, Zhao YQ, Zhang GQ, Li HL (2007) Eletrochem Commun 9:1282
Muthulakshmi B, Kalpana D, Pitchumani S Renganathan NG (2006) J Power Sources 158:1533
Acknowledgements
This work was supported by National Basic Research Program of China (973 Program; No. 2007CB209703), National Natural Science Foundation of China (No. 20403014, No. 20633040), and Natural Science Foundation of Jiangsu Province (BK2006196).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yuan, Cz., Dou, H., Gao, B. et al. High-voltage aqueous symmetric electrochemical capacitor based on Ru0.7Sn0.3O2·nH2O electrodes in 1 M KOH. J Solid State Electrochem 12, 1645–1652 (2008). https://doi.org/10.1007/s10008-008-0543-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10008-008-0543-1