| 无粘结剂V2O5纳米线/CNT电极的制备及电化学性能 |
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| 引用本文： | 刘宁安,彭红瑞. 无粘结剂V2O5纳米线/CNT电极的制备及电化学性能[J]. 青岛化工学院学报(自然科学版), 2014, 0(4): 360-364 |
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| 作者姓名： | 刘宁安 彭红瑞 |
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| 作者单位： | 青岛科技大学材料科学与工程学院,山东青岛266042 |
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| 摘 要： | 把羧化的碳纳米管与水热法合成的V2O5纳米线混合超声处理后,直接真空抽滤得到无粘结剂V2O5纳米线/CNT纸.对加入不同含量的碳纳米管的样品,综合考虑比容量和循环性能,其中m（V2O5）∶m（CNT）=1∶1样品的电化学性能最好.当电流密度为30 mA·g-1时,首次放电比容量能达到290.6 mAh·g-1,接近于V2O5的理论比容量,10次循环以后为265.4mAh·g-1,容量保持率为91.32％.当电流密度为600 mA·g-1,首次放电比容量71.2 mAh·g-1,第10次循环为62.5 mA·g-1,容量保持率可达87.8％.
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| 关 键 词： | 锂离子电池 无粘结剂 碳纳米管 V2O5 |
Preparation and Electrochemical Properties of Vanadium Oxide Nanowire-Carbon Nanotube Binder-Free Electrodes |
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| LIU Ning-an,PENG Hong-rui. Preparation and Electrochemical Properties of Vanadium Oxide Nanowire-Carbon Nanotube Binder-Free Electrodes[J]. Journal of Qingdao Institute of Chemical Technology(Natural Science Edition), 2014, 0(4): 360-364 |
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| Authors: | LIU Ning-an PENG Hong-rui |
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| Affiliation: | (College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China) |
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| Abstract: | Mix the carboxylation CNTs and V2 O5 nanowires together, disperse into water with ultrasonic processing, then treat the products with vacuum titration to obtain the binder-free V2O5 nanowires/CNT composite paper. Considering the complex electrochemical properties, m（V2O5） ： m（CNT）=1 ： 1 is the best. When the current density is 30 mA · g-1, the initial discharge capacity is up to 290. 6 mAh · g-1, which is close to the specific capacity, and after 10 cycles, the capacity is 265.4 mAh · g-1 with a retention of 91.32%. When the current density is up to 600 mA· g-1, the initial and 10th discharge capacity are 71.2 mA· g-1 and 62.5 mAh · g-1 with a retention of 87.8%. |
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| Keywords: | Li-ion batteries binder-free carbon nanotube V2 O5 |
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