2D ultrathin nanosheet-assembled Nb2O5 microflowers for lithium ion batteries

作者：Chen, Junli^*; Wang, Hai; Zhang, Xinxing; Liu, Baoqiang; Xu, Liancai; Zhang, Zhiqiang; Zhang, Yonghui^*

来源：Materials Letters, 2018, 227: 112-115.

DOI：10.1016/j.matlet.2018.05.067

• Nanosheets
• Nb2O5
• Lithium-ion battery
• Microstructure
• Porous materials

Hierarchical Nb2O5 microflowers architectures assembled with 2D ultrathin nanosheets were successfully constructed via a facile hydrothermal method. The as-synthesized microflowers with a diameter of ca. 1.4 mu m are assembled by ultrathin nanosheets with the thickness of 3-4 nm. The initial discharge capacities of Nb2O5 microflowers are 247 mA h g(-1) at a current density of 20 mA g(-1) , meanwhile the retention capacities are 190.1 mA h g(-1) after 100 cycles. Hence, the Nb2O5 microflowers can be developed as a promising negative material for high-rate lithium ion storage applications.

• 出版日期2018-9-15
• 单位郑州轻工业大学