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Hierarchically Porous Ni-Co Oxide for High Reversibility Asymmetric Full-Cell Supercapacitors
Open accessAbstract
Hierarchically porous Ni-Co oxide powder is successfully synthesized by a facile chemical bath deposition method. The structure and composition of Ni-Co oxide are confirmed by transmission electron microscopy and energy dispersive X-ray analysis. Scanning electron microscopy characterization indicates that the Ni-Co oxide has architecture of numerous microflowers with porous flakes. The pseudocapacitive behavior of the Ni-Co oxide powder is investigated by cyclic voltammgrams (CVs) and galvanostatic charge-discharge tests in alkali solution. The Ni-Co oxide shows a good reversibility with a high specific capacitance (834.93 Fg −1 at 1 mVs −1 scan rate). This active material was also used to manufacture a Ni-Co oxide//AC (Active Carbon) asymmetric supercapacitor. The Ni-Co oxide//AC asymmetric supercapacitor shows not only a high specific capacitance (60 Fg −1 with 1 mVs −1 scan rate), but also a high reversibility where its specific capacitance remains at 37 Fg −1 at a high current density of 20 mAcm −2 .
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Review of supercapacitors: Materials and devices
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Metadata
- Authors
- Tang, C., Tang, Z., & Gong, H.
- Venue
- Journal of The Electrochemical Society
- Publisher
- The Electrochemical Society
- Published
- 2012
- Volume
- 159
- Issue
- 5
- Pages
- A651-A656
- ISSN
- 0013-4651 (ISSN-L)
- 1945-7111
- OpenAlex
- W2074432746
- Cited by
- 342
- References
- 17
- FWCI
- 5.71
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Tang, C., Tang, Z., & Gong, H. (2012). Hierarchically Porous Ni-Co Oxide for High Reversibility Asymmetric Full-Cell Supercapacitors. Journal of The Electrochemical Society. https://doi.org/10.1149/2.074205jes
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
