Crosslinked Carbon Nanotubes/Polyaniline Composites as a Pseudocapacitive Material with High Cycling Stability.
Crosslinked Carbon Nanotubes/Polyaniline Composites as a Pseudocapacitive Material with High Cycling Stability.
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DOI：
10.3390/nano5021034
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发表时间：
2015-06-11
期刊：
影响因子：
--
通讯作者：
Liu P
中科院分区：
文献类型：
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作者：
Liu D;Wang X;Deng J;Zhou C;Guo J;Liu P
由于充放电过程中的体积变化，聚苯胺（PANI）循环稳定性差，限制了其作为赝电容材料的实际应用。在此，通过在交联碳纳米管（C-CNTs）存在下苯胺的原位化学氧化聚合设计了交联碳纳米管/聚苯胺（C-CNTs/PANI）复合材料，该复合材料是通过功能化碳纳米管与1,4-苯醌偶联而获得的。该复合材料在 10 mV/s 的扫描速率下表现出 294 F/g 的比电容，并且在 1000 个 CV 循环后仍能保留其初始比电容的 95%。 C-CNT 的交联骨架带来如此高的电化学循环稳定性，使其成为超级电容器的潜在电极材料。
The poor cycling stability of polyaniline (PANI) limits its practical application as a pseudocapacitive material due to the volume change during the charge-discharge procedure. Herein, crosslinked carbon nanotubes/polyaniline (C-CNTs/PANI) composites had been designed by the in situ chemical oxidative polymerization of aniline in the presence of crosslinked carbon nanotubes (C-CNTs), which were obtained by coupling of the functionalized carbon nanotubes with 1,4-benzoquinone. The composite showed a specific capacitance of 294 F/g at the scan rate of 10 mV/s, and could retain 95% of its initial specific capacitance after 1000 CV cycles. Such high electrochemical cycling stability resulting from the crosslinked skeleton of the C-CNTs makes them potential electrode materials for a supercapacitor.