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One-Step Synthesis of Graphene−Cobalt Hydroxide Nanocomposites and Their Electrochemical Properties
Abstract
The well-documented novel performances of graphene make it a potential candidate for a wide range of utilizations, driving research into exploiting unusual properties of this wonder material. This paper reports a facile soft chemical approach to fabricate graphene−Co(OH) 2 nanocomposites in a water−isopropanol system. Generally the depositing agent (OH − ) and some reducing agents (such as HS − and H 2 S) could be produced from the hydrolyzation of Na 2 S in aqueous solution. Therefore utilizing Na 2 S as a precursor could enable the occurrence of the deposition of Co 2+ and the deoxygenation of graphite oxide (GO) at the same time. Remarkably the electrochemical specific capacitance of the graphene−Co(OH) 2 nanocomposite reaches a value as high as 972.5 F·g −1, leading to a significant improvement in relation to each individual counterpart (137.6 and 726.1 F·g −1 for graphene and Co(OH) 2, respectively). The feeding ratios between Co(OH) 2 and graphene oxide have a pronounced effect on their electrochemical activities.
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Citations
Cited by
Functional Composite Materials Based on Chemically Converted Graphene
Bai, H., Li, C., & Shi, G. (2011) · Advanced Materials · doi:10.1002/adma.201003753 · Cited by 1,080
Lee, J. W., Hall, A. S., Kim, J.-D., & Mallouk, T. E. (2012) · Chemistry of Materials · doi:10.1021/cm203697w · Cited by 787
Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications
Khan, M., Tahir, M. N., Adil, S. F., Khan, H. U., Siddiqui, M. R. H., Al-warthan, A. A., & Tremel, W. (2015) · Journal of Materials Chemistry A · doi:10.1039/c5ta02240a · Cited by 709
Zhong, J.-H., Wang, A.-L., Li, G.-R., Wang, J.-W., Ou, Y.-N., & Tong, Y.-X. (2012) · Journal of Materials Chemistry · doi:10.1039/c2jm15863a · Cited by 510
Guan, C., Liu, J., Cheng, C., Li, H., Li, X., Zhou, W., Zhang, H., & Fan, H. J. (2011) · Energy & Environmental Science · doi:10.1039/c1ee01685g · Cited by 417
Pendashteh, A., Mousavi, M. F., & Rahmanifar, M. S. (2013) · Electrochimica Acta · doi:10.1016/j.electacta.2012.10.088 · Cited by 411
Bai, S., Shen, X., Zhong, X., Liu, Y., Zhu, G., Xu, X., & Chen, K. (2012) · Carbon · doi:10.1016/j.carbon.2012.01.057 · Cited by 355
Metadata
- Authors
- Chen, S., Zhu, J., & Wang, X.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-06-21
- Volume
- 114
- Issue
- 27
- Pages
- 11829-11834
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2029249529
- Cited by
- 333
- References
- 0
- FWCI
- 14.29
- Type
- journal article
- Language
- en
- Open access
- closed
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