Abstract
RuO2/Co3O4 thin films with different RuO2 content were successfully prepared on fluorine-doped tin oxide coated glass plate substrates by spray pyrolysis method, and their capacitive behavior was investigated. Electrochemical property was performed by cyclic voltammetry, constant current charge/discharge, and electrochemical impedance spectra. The capacitive performance of RuO2/Co3O4 thin films with different RuO2 content corresponded to a contribution from a main pseudocapacitance and an additional electric double-layer capacitance. The specific capacitance of pure Co3O4, 15.5%, 35.6%, and 62.3% RuO2 composites at the current density of 0.2 A g−1 were 394 ± 8, 453 ± 9, 520 ± 10, and 690 ± 14 F g−1, respectively; 62.3% RuO2 composite presented the highest specific capacitance value at various current densities, whereas 35.6% RuO2 composite exhibited not only the largest specific capacitance contribution from RuO2 (C sp RuO2) at the current density of 0.5, 1.0, 1.5, and 2.0 A g−1 but also the highest specific capacitance retention ratio (46.3 ± 2.8%) at the current density ranging from 0.2 to 2.0 A g−1. Electrochemical impedance spectra showed that the contact resistance dropped gradually with the decrease of RuO2 content, and the charge-transfer resistance (R ct) increased gradually with the decrease of RuO2 content.
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Centeno TA, Stoeckli F (2006) Electrochim Acta 52:560
Qu D (2002) J Power Sources 109:403
Hu CC, Chang KH, Lin MC, Wu YT (2006) Nano Lett 6:2690
Liang Y-Y, Li HL, Zhang X-G (2007) J Power Sources 173:599
Fang W-C, Huang J-H, Chen L-C, Su Y-LO, Chen K-H (2006) J Power Sources 160:1506
Hu C-C, Chen W-C, Chang K-H (2004) J Electrochem Soc 151:A281
Brousse T, Toupin M, Dugas R, Athouel L, Crosnier O, Belanger D (2006) J Electrochem Soc 153:A2171
Nagarajan N, Humadi H, Zhitomirsky I (2006) Electrochim Acta 51:3039
Nakayama M, Kanaya T, Inoue R (2007) Electrochem Commun 9:1154
Huang Q, Wang X, Li J (2006) Electrochim Acta 52:1758
Cheng J, Cao G-P, Yang Y-S (2006) J Power Sources 159:734
Lee S-H, Tracy CE, Pitts JR (2004) Electrochem Solid St 7:A299
Wu M-S, Huang Y-A, Yang C-H, Jow J-J (2007) Int J Hydrogen Energy 32:4153
Kim H-K, Seong T-Y, Lim J-H, Ii Cho W, Soo Yoon Y (2001) J Power Sources 102:167
Shinde VR, Mahadik SB, Gujar TP, Lokhande CD (2006) Appl Surf Sci 252:7487
Chuan L, James AR, Branko NP (1998) J Electrochem Soc 145:4097
Liu TC, Pell WG, Conway BE (1999) Electrochim Acta 44:2829
Yuan C, Zhang X, Gao B, Li J (2007) Mater Chem Phys 101:148
Yu W, Yang X, Wang P, Meng L (2006) ECS Transactions 1:19
Mastragostino M, Arbizzani C, Soavi F (2002) Solid State Ionics 148:493
Soudan P, Ho HA, Breau L, Belanger D (2001) J Electrochem Soc 148:A775
Wu M, Zhang L, Wang D, Xiao C, Zhang S (2008) J Power Sources 175:669
Liu XM, Zhang XG (2004) Electrochim Acta 49:229
Pico F, Ibanez J, Centeno TA, Pecharroman C, Rojas RM, Amarilla JM, Rojo JM (2006) Electrochim Acta 51:4693
Hu C-C, Chang K-H, Wang C-C (2007) Electrochim Acta 52:4411
Wang Y-G, Wang Z-D, Xia Y-Y (2005) Electrochim Acta 50:5641
Ye J-S, Cui HF, Liu X, Lim TM, Zhang W-D, Sheu F-S (2005) Small 1:560
Jang JH, Han S, Hyeon T, Oh SM (2003) J Power Sources 123:79
Liu Y, Zhao W, Zhang X (2008) Electrochim Acta 53:3296
Krstajic N, Trasatti S (1995) J Electrochem Soc 142:2675
Gujar TP, Shinde VR, Lokhande CD, Kim W-Y, Jung K-D, Joo O-S (2007) Electrochem Commun 9:504
Desai JD, Min S-K, Jung K-D, Joo O-S (2006) Appl Surf Sci 253:1781
Švegl F, Orel B, Hutchins MG, Kalcher K (1996) J Electrochem Soc 143:1532
Tao F, Zhao Y-Q, Zhang G-Q, Li H-L (2007) Electrochem Commun 9:1282
Zheng JP, Cygan PJ, Jow TR (1995) J Electrochem Soc 142:2699
Wu M-S, Hsieh H-H (2008) Electrochim Acta 53:3427
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Support of this work by grants from the National Natural Science Foundation of China (No. 20376085, No. E50772133) and Scientific Research Fund of Hunan Provincial Education Department (No. 09C1055) is gratefully appreciated.
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Li, Y., Huang, K., Zeng, D. et al. RuO2/Co3O4 thin films prepared by spray pyrolysis technique for supercapacitors. J Solid State Electrochem 14, 1205–1211 (2010). https://doi.org/10.1007/s10008-009-0955-6
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DOI: https://doi.org/10.1007/s10008-009-0955-6