کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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6471556 | 1424122 | 2017 | 7 صفحه PDF | دانلود رایگان |
- A simple four-step method to prepare T-Nb2O5/CNTs composite.
- The composite is with well-dispersed CNTs in the Nb2O5 phase.
- The composite has excellent large-current discharge property.
- The composite has a high energy storage property at high current density.
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 â¼180 mAh gâ1 at 1 A gâ1 and â¼130 mAh gâ1 at 5 A gâ1 is attained.
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Journal: Electrochimica Acta - Volume 235, 1 May 2017, Pages 175-181