Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 5, Issue 20, Pages 9991-9997Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta01735a
Keywords
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Funding
- National Natural Science Foundation of China [21273236]
- Science and Technology Planning Projects of Fujian Province of China [2014H2008, 2015I0008]
- STS Project of Fujian-CAS [2016T3036]
- Chinese Academy of Science
- 100 Talents program of Fujian province, China
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Uncontrollable diffusion and the associated decrease in rate have hampered the development of robust nanostructured porous metal sulfides to date. Herein, we report a robust and porous NiCo2S4 nanostructure grown on graphene oxide using a facile synthesis method. The obtained ultrathin NiCo2S4 nanosheets contain a broad range of nanopores and their graphene backbone enhances the surface area as well as conductivity of the entire matrix. The advantages of the synthetic approach were evaluated by investigating the supercapacitor efficiency of the obtained nanomaterial, where the highly porous and exposed nanocomposite delivered the high capacitance of 1527 F g(-1) at 10 mV s(-1) in 1.0 M KOH. The high capacitive nanomaterial electrode coupled with graphene-single wall carbon nanohorn heterostructures provides a maximum energy of 60.9 W h kg(-1) at 1.4 kW kg(-1) power density, which reveals the merits of the synthetic approach and its application in progressive electrochemical energy storage/conversion devices.
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