Abstract
Copper oxide particles with different morphology (flower-like, peach kernel-like, and dandelion-like) are prepared with hydrothermal method by adjusting chitosan ((C6H11NO4)n) concentration in aqueous mixed solutions of ammonia and Cu(NO3)2. Various morphologies of porous cupric oxide (CuO) particles are formed by agglomerated nanosheet primary particles and lead to different electrochemical performance of electrodes. The peach kernel-shaped CuO exhibits high reversible capacity and rate capability. The reversible capacity is 722.7 mAh g−1 at 0.1 C in the first cycle and 339 mAh g−1 after 50 cycles at 0.2, 0.5, 1.0, and 2.0 C ratio. The higher reversible capacities and good cycling performance are attributed to the larger specific surface area, leading to better contact between CuO and electrolyte.
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This work was financially supported by Project Supported by the Planned Science and Technology Project of Hunan Province, China (2011FJ3160, 2011GK2002) and Project Supported by Scientific Research Fund of Hunan Provincial Education Department (10B054).
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Hu, C., Guo, J. & Wen, J. Hierarchical nanostructure CuO with peach kernel-like morphology as anode material for lithium-ion batteries. Ionics 19, 253–258 (2013). https://doi.org/10.1007/s11581-012-0756-2
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DOI: https://doi.org/10.1007/s11581-012-0756-2