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Title: Synthesis of multimodal porous ZnCo2O4 and its electrochemical properties as an anode material for lithium ion batteries
Authors: Hao, Shiji
Zhang, Bowei
Ball, Sarah
Copley, Mark
Xu, Zhichuan
Srinivasan, Madhavi
Zhou, Kun
Mhaisalkar, Subodh
Huang, Yizhong
Keywords: ZnCo2O4
Multimodal porosity
Issue Date: 2015
Source: Hao, S., Zhang, B., Ball, S., Copley, M., Xu, Z., Srinivasan, et al. (2015). Synthesis of multimodal porous ZnCo2O4 and its electrochemical properties as an anode material for lithium ion batteries. Journal of Power Sources, 294, 112-119.
Series/Report no.: Journal of Power Sources
Abstract: In the present paper, flower-like multimodal porous ZnCo2O4 microspheres, comprised of numerous nanosheets, are synthesized through PVP assist solvothermal self-assembling process. The multimodal porous ZnCo2O4 microspheres are characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). A possible formation mechanism of two steps self-assemble is proposed. The ZnCo2O4 microspheres are then used as an anode material to fabricate lithium ion batteries. The results based on the evaluation of lithium ion batteries demonstrate that the porous microstructure offers the excellent electrochemical performance with high capacity and long-life cycling stability. It is found that a high reversible capacity of 940 and 919 mAh g−1 is maintained after 100 cycles at a low charge–discharge rate of 0.1C and 0.2C (100 and 200 mA g−1), respectively. Meanwhile, the remaining discharging capacity reaches as high as 856 mAh g−1 after 1000 cycles subject to the large current density up to 1C.
ISSN: 0378-7753
DOI: 10.1016/j.jpowsour.2015.06.048
Rights: © 2015 Elsevier B.V.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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