A novel hierarchical network-like Co3O4 anode material for lithium batteries

A novel hierarchical network-like Co3O4 are successfully synthesized by hydrothermal method combined with subsequent annealing treatment in air. The evolution process of network-like Co(CO3)0.5(OH)·0.11H2O precursor are characterized by XRD, SEM and FT-IR methods. The as-prepared network-like Co3O4...

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Veröffentlicht in:Electrochimica acta 2013-11, Vol.111, p.746-754
Hauptverfasser: Zhang, X.X., Xie, Q.S., Yue, G.H., Zhang, Y., Zhang, X.Q., Lu, A.L., Peng, D.L.
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Sprache:eng
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Zusammenfassung:A novel hierarchical network-like Co3O4 are successfully synthesized by hydrothermal method combined with subsequent annealing treatment in air. The evolution process of network-like Co(CO3)0.5(OH)·0.11H2O precursor are characterized by XRD, SEM and FT-IR methods. The as-prepared network-like Co3O4 are tested as an anode material in lithium-ion batteries. The influences of the Co3O4 morphology on the electrochemical performances are investigated. In the specific capability test, the first discharge capacity of 2008mAhg−1 is recorded at current density of 100mAg−1. The excellent electrochemical properties of the Co3O4 electrodes can be attributed to high specific surface area which provides more active area that can react with Li+ ions, leading to outstanding specific capacitance. And the results indicated that the polypyrrole (PPy) as a conductive macromolecule coating on the Co3O4 surface can improve performance of the LIBs obviously.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2013.08.062