High-performance anode based on porous Co3O4 nanodiscs
In this article, two-dimensional, Co3O4 hexagonal nanodiscs are prepared using a hydrothermal method without surfactants. X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been employed to characterize the structural properties. As revealed by the SEM and TEM experiments, the thickness of our as-fabricated Co3O4 hexagonal nanodiscs is about 20 nm, and the pore diameters range from several nanometers to 30 nm. As an anode for lithium-ion batteries, porous Co3O4 nanodiscs exhibit an average discharge voltage of ~1 V (Vs. Li/Li+) and a high specific charge capacity of 1161 mAh g-1 after 100 cycles. They also demonstrate excellent rate performance and high Coloumbic efficiency at various rates. These results indicate that porous Co3O4 nanodiscs are good candidates as anode materials for lithium-ion batteries.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1134519
- Report Number(s):
- PNNL-SA-101781; 30490; VT1201000
- Journal Information:
- Journal of Power Sources, Vol. 255; ISSN 0378-7753
- Country of Publication:
- United States
- Language:
- English
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