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Elsevier, Ceramics International, 7(40), p. 10005-10011, 2014

DOI: 10.1016/j.ceramint.2014.02.099

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Template-free and large-scale synthesis of hierarchical dandelion-like NiCo2O4 microspheres for high-performance supercapacitors

Journal article published in 2014 by Min Kuang, Wei Zhang ORCID, Xiao Long Guo, Liang Yu, Yu Xin Zhang ORCID
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

In thiswork,dandelion-likeNiCo2O4 mesoporous microsphereswereuniformlyassembledfromslimnanowiresviaalarge-scaleandtemplate free method.TheBrunauer–Emmett–Teller (BET)surfaceareaofNiCo2O4 microspheres wasdeterminedtobeabout35.2m2 g�1 with dominant pore diameterof10.9nmandnarrowsizedistributionof8–20 nm.Furthermore,theelectrochemicalpropertiesofNiCo2O4 microspheres were evaluated bycyclevoltammetric(CV)andgalvanostaticcharge–discharge (GCD)measurements.TheresultsdemonstratedthattheNiCo2O4 microspheres exhibitedhighspecific capacitance(372Fg�1 at 1Ag�1), goodratecapability,andexcellentcyclingstability(88.3%retention after 2000cycles).Inprinciple,thissyntheticapproachcouldbeextendedforthefabricationofothermicrostructurematerialsforpromising electrode candidatesinenergystoragedevices.