Arrayed CN  NT–RuO2 nanocomposites directly grown on Ti-buffered Si substrate for supercapacitor applications

Fang, Wei-Chuan; Chyan, Oliver; Sun, Chia‐Liang; Wu, Chien-Ting; Chen, Chin-Pei; Chen, Kuei‐Hsien; Chen, Li‐Chyong; Huang, Jinhua

doi:10.1016/j.elecom.2006.09.001

Cited by 87 publications

(20 citation statements)

References 28 publications

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“…Several methods have been proposed to prepare CNT-based electrodes [4][5][6][7][8], and in most cases, CNTs were prepared in the form of >films or pastes and then coated on conductive substrates. In these cases, a conductive substrate like nickel foam or foil is always necessary to function as current collectors and support the electroactive materials [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical capacitive properties of CNT fibers spun from vertically aligned CNT arrays

Sun

Zhou

et al. 2011

J Solid State Electrochem

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Due to their lightweight, large surface area; excellent electrical conductivity; and mechanical strength, carbon nanotube (CNT) fibers show great potentials in serving as both electrode materials and current collectors in supercapacitors. In this paper, the capacitive properties of both asspun CNT fibers and electrochemically activated CNT fibers have been investigated using cyclic voltammetry and electrochemical impedance spectroscopy. It is found that the as-spun CNT fibers exhibit a very low specific capacitance of 2.6 Fg −1 , but electrochemically activated CNT fibers show considerably improved specific capacitance. The electrochemical activation has been realized by cyclic scanning in a wide potential window. Different electrolytes have also been examined to validate the applicability of our carbon materials and the activation mechanism. It is believed that such an activation process can significantly improve the surface wetting of the CNT fibers by electrolyte (aqueous Na 2 SO 4 solution). The cycling stability and rate-dependence of the capacitance have been studied, and the results suggest practical applications of CNT fibers in electrochemical supercapacitors.

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Section: Introductionmentioning

confidence: 99%

Electrochemical capacitive properties of CNT fibers spun from vertically aligned CNT arrays

Sun

Zhou

et al. 2011

J Solid State Electrochem

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“…Although RuO 2 is a commonly used metal oxide for electrode fabrication because it exhibits a high specific capacitance of 1380 F/g and excellent operation stability, it is unfavorable because of its high production cost . Recently, MnO 2 has attracted considerable attention because of its good electrochemical performance , abundance, and environmental friendliness.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of flexible polypyrrole/graphene oxide/manganese oxide supercapacitor

Lim

et al. 2014

Int. J. Energy Res.

110

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SUMMARYA flexible polypyrrole/graphene oxide/manganese oxide-based supercapacitor was prepared via an electrodeposition process. The polypyrrole, graphene oxide, and manganese oxide were deposited onto a flexible and highly porous nickel foam, which acted as a current collector to enhance the electrochemical performances. The good coverage of the polypyrrole, graphene oxide, and manganese oxide onto the scaffold of the nickel foam was evidenced using field emission scanning electron microscopy and X-ray diffraction. The manganese species, which were present in the oxidation states of Mn 3+ and Mn 4+ , were shown using X-ray photoelectron spectroscopy. The presence of Mn 2 O 3 and MnO 2 polymorphs was detected using Fourier transform infrared and Raman spectroscopies. The cyclic stability of the ternary supercapacitor was consistent regardless of its geometry and curvature. In contrast, an activated carbon supercapacitor possesses limited energy storage capability compared to a ternary supercapacitor, which suppresses the electrochemical performances of activated carbon. The ternary as-fabricated supercapacitor could retain a specific capacitance of 96.58% after 1000 cycles, and the as-synthesized energy storage device was able to light up a light emitting diode.

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“…Theoretically, the specific capacitance delivery capability of RuO 2 -based materials could reach the range of 1300e2200 F g À1 [84]. RuO 2 , with its high operating stability, has showed a specific capacitance of 1380 F g À1 , and thus seems to be one of the best options for electrode fabrication [85]. In addition, the highest specific value reported for an experimental capacitance was 1580 F g À1 in an acidic electrolyte [84].…”

Section: Types Of Pseudocapacitive/active Electrode Materialsmentioning

confidence: 97%

“…However, its 1-V window potential and high production cost for RuO 2 limit its application diversity to smaller electronic devices. This has prompted the use of alternative approaches such as the employment of cost-effective metal oxides, conducting polymers, or composite materials as electrode active materials [85].…”

Section: Types Of Pseudocapacitive/active Electrode Materialsmentioning

confidence: 99%

Potential active materials for photo-supercapacitor: A review

Lim

Hayase

et al. 2015

Journal of Power Sources

111

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Arrayed CN NT–RuO2 nanocomposites directly grown on Ti-buffered Si substrate for supercapacitor applications

Cited by 87 publications

References 28 publications

Electrochemical capacitive properties of CNT fibers spun from vertically aligned CNT arrays

Electrochemical capacitive properties of CNT fibers spun from vertically aligned CNT arrays

Fabrication of flexible polypyrrole/graphene oxide/manganese oxide supercapacitor

Potential active materials for photo-supercapacitor: A review

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