Facile synthesis of NiCo2O4 nanorod arrays on Cu conductive substrates as superior anode materials for high-rate Li-ion batteries

Liu, Jun, Liu, Chunping, Wan, Yanling, Li, Wei, Ma, Zengsheng, Ji, Shaomin, Wang, Jinbing, Zhou, Yichun, Hodgson, Peter and Li, Yuncang 2013, Facile synthesis of NiCo2O4 nanorod arrays on Cu conductive substrates as superior anode materials for high-rate Li-ion batteries, CrystEngComm, vol. 15, no. 8, pp. 1578-1585, doi: 10.1039/C2CE26632F.

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Title Facile synthesis of NiCo2O4 nanorod arrays on Cu conductive substrates as superior anode materials for high-rate Li-ion batteries
Author(s) Liu, Jun
Liu, Chunping
Wan, Yanling
Li, Wei
Ma, Zengsheng
Ji, Shaomin
Wang, Jinbing
Zhou, Yichun
Hodgson, Peter
Li, Yuncang
Journal name CrystEngComm
Volume number 15
Issue number 8
Start page 1578
End page 1585
Total pages 8
Publisher Royal Society of Chemistry
Place of publication Cambridge, England
Publication date 2013
ISSN 1466-8033
Summary In this work, we report a mild and cost-effective solution method to directly grow Ni-substituted Co3O4 (ternary NiCo2O4) nanorod arrays on Cu substrates. Electrochemical impedance spectroscopy (EIS) measurements show that the values of the electrolyte resistance Re and charge-transfer resistance Rct of NiCo2O4 are 6.8 and 63.5 Ω, respectively, which are significantly lower than those of binary Co3O4 (10.4 and 122.4 Ω). This EIS characterization strongly confirms that the ternary NiCo2O4 anode has much higher electrical conductivity than that of the binary Co3O4 electrode materials, which should greatly enhance the lithium storage performances. Due to the well-aligned 1D nanorod microstructure and a higher electrical conductivity, these ternary NiCo2O4 nanorod arrays manifest high specific capacity, excellent cycling stability (a high reversible capacity of about 830 mA h g−1 was achieved after 30 cycles at 0.5 C) and high rate capability (787, 695, 512, 254, 127 mA h g−1 at 1 C, 2 C, 6 C 50 C and 110 C, respectively).
Language eng
DOI 10.1039/C2CE26632F
Field of Research 091305 Energy Generation, Conversion and Storage Engineering
030304 Physical Chemistry of Materials
030306 Synthesis of Materials
Socio Economic Objective 850602 Energy Storage (excl. Hydrogen)
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30053625

Document type: Journal Article
Collections: Institute for Frontier Materials
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