A template-free synthesis via alkaline route for Nb2O5/carbon nanotubes composite as pseudo-capacitor material with high-rate performance

作者：Luo, Guoming; Li, Heshun; Zhang, Daquan^*; Gao, Lixin; Lin, Tong

来源：Electrochimica Acta, 2017, 235: 175-181.

DOI：10.1016/j.electacta.2017.03.112

• Composites
• Solvothermal
• Electrochemical properties
• Energy storage

In this paper, we report a facile template-free method to prepare the T-Nb2O5/CNTs composite. The addition of ammonia induces the electrostatic interaction between functionalized CNTs and niobic acid colloids during hydrothermal process, resulting in CNTs homogeneously distributed in the T-Nb2O5 phase. The obtained T-Nb2O5/CNTs composite shows high rate Li+ storage ability with typical intercalation capacitive behaviour. The presence of well-dispersed CNTs in Nb2O5 can apparently reduce the limitation from diffusion process and increase the high rate charge-discharge capability. From the galvanostatic tests, a capacity of similar to 180 mAh g (1) at 5 Ag (1) and similar to 130 mAh g (1) at 5 A g (1) is attained.

• 出版日期2017-5-1
• 单位上海电力大学; 迪肯大学