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 |
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Format: | Artikel |
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. |
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ISSN: | 0013-4686 1873-3859 |
DOI: | 10.1016/j.electacta.2013.08.062 |