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Multisegmented Au-MnO2/Carbon Nanotube Hybrid Coaxial Arrays for High-Power Supercapacitor Applications
Abstract
The present work reports on synthesis and supercapacitor applications of multisegmented Au-MnO 2 /carbon nanotube (CNT) coaxial arrays. Multisegmented Au-MnO 2 /CNT coaxial arrays are fabricated inside porous alumina templates using a combination of electrodeposition, infiltration, and chemical vapor deposition methods. CNTs serve as an alternative additive for improving the electrical conductivity of the manganese oxide electrodes, in addition to its active electrode characteristics. The well-adhered interface between Au and MnO 2 /CNT hybrid segments leads to nanoscale electrical contacts between the electrode and current collectors. Electrochemical studies have been performed using cyclic voltammetry, galvanostatic charge−discharge, and impedance spectroscopy measurements. The results demonstrate that MnO 2 /CNT hybrid coaxial arrays are efficient electrodes for supercapacitor applications. Au-segmented MnO 2 /CNT hybrid coaxial electrodes showed further improvement in specific capacitance, energy, and power densities of a supercapacitor.
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Cited by
Carbons and Electrolytes for Advanced Supercapacitors
Béguin, F., Presser, V., Balducci, A., & Frackowiak, E. (2014) · Advanced Materials · doi:10.1002/adma.201304137 · Cited by 2,686
Supercapacitor electrode materials: nanostructures from 0 to 3 dimensions
Yu, Z., Tetard, L., Zhai, L., & Thomas, J. (2015) · Energy & Environmental Science · doi:10.1039/c4ee03229b · Cited by 2,573
Graphene Oxide−MnO2 Nanocomposites for Supercapacitors
Chen, S., Zhu, J., Wu, X., Han, Q., & Wang, X. (2010) · ACS Nano · doi:10.1021/nn901311t · Cited by 2,113
Nanoporous metal/oxide hybrid electrodes for electrochemical supercapacitors
Lang, X., Hirata, A., Fujita, T., & Chen, M. (2011) · Nature Nanotechnology · doi:10.1038/nnano.2011.13 · Cited by 2,109
Review of supercapacitors: Materials and devices
Poonam, Sharma, K., Arora, A., & Tripathi, S. K. (2019) · Journal of Energy Storage · doi:10.1016/j.est.2019.01.010 · Cited by 2,064
Metadata
- Authors
- Reddy, A. L. M., Shaijumon, M. M., Gowda, S. R., & Ajayan, P. M.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-12-02
- Volume
- 114
- Issue
- 1
- Pages
- 658-663
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2028281463
- Cited by
- 338
- References
- 0
- FWCI
- 10.90
- Type
- journal article
- Language
- en
- Open access
- closed
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- Reddy, A. L. M., Shaijumon, M. M., Gowda, S. R., & Ajayan, P. M. (2010). Multisegmented Au-MnO2/Carbon Nanotube Hybrid Coaxial Arrays for High-Power Supercapacitor Applications. The Journal of Physical Chemistry C. https://doi.org/10.1021/jp908739q
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