A novel and facile way to synthesize vanadium pentoxide nanospike as cathode materials for high performance lithium ion batteries

作者：Zhou Xiaowei; Cui Chaojun; Wu Guangming^*; Yang Huiyu; Wu Jiandong; Wang Jichao; Gao Guohua

来源：Journal of Power Sources, 2013, 238: 95-102.

DOI：10.1016/j.jpowsour.2013.03.078

• Hydrothermal synthesis
• Vanadium oxide nanotubes
• Vanadium pentoxide nanospike
• Cathode materials

Vanadium oxide nanotubes (VOx-NTs) are prepared by sol-gel method and subsequent hydrothermal treatment using dodecylamines as structure directing templates. After sintering of VOx-NTs in the mixed gas flow of nitrogen and oxygen, we successfully obtain a kind of nanospike shaped vanadium pentoxide free of organic template. The synthesized vanadium pentoxide nanospike (V2O5-NS) is composed of interconnected V2O5 nanocrystals (50-200 nm) and exhibits superior specific capacity and cycling performance (427 mA h g(-1) for the first cycle and 218 mA h g(-1) after 50 cycles at 50 mA g(-1) current density between 1.5 and 4 V versus Li/Li+) when used as cathode materials for lithium ion batteries. Besides, V2O5-NS also possesses good rate capability. This novel method adopted in the work is facile and effective for the synthesis of nanostructured vanadium oxide.

• 出版日期2013-9-15
• 单位安阳工学院; 同济大学