Electrochemical performance of Co3O4-C composite anode materials

Electrochemical Society, Inc.
Publication Type:
Journal article
Needham S. et al. 2006, 'Electrochemical performance of Co3O4-C composite anode materials', Electrochemical Society, Inc., vol. 9, no. 7, pp. A315-A319.
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Co3O4?C composite powder has been synthesized via spray pyrolysis of cobalt nitrate-sugar solution at 600?C and assessed for application as anode materials in Li-ion batteries. Microstructural characterization by scanning electron microscopy, transmission electron microscopy, and energy-dispersive X-ray spectroscopy confirm an even distribution of carbon throughout particles, as well as the presence of a carbon-based surface sheath surrounding Co3O4?C particle agglomerates. Charge-discharge cycling of half-cells indicates a stable reversible discharge capacity above 800 mAh g-1. Equivalent circuit modeling of Nyquist plots show the Co3O4?C electrode has significant kinetic advantages over non-composite transition metal oxide electrodes.
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