Facile synthesis of polyaniline nanotubes using reactive oxide templates for high energy density pseudocapacitors
Facile synthesis of polyaniline nanotubes using reactive oxide templates for high energy density pseudocapacitors
复制标题
DOI：
10.1039/c3ta00499f
复制
发表时间：
2013-01-01
影响因子：
11.9
通讯作者：
Alshareef, H. N.
中科院分区：
文献类型：
--
作者：
Chen, Wei;Rakhi, R. B.;Alshareef, H. N.
以导电聚合物纳米管（聚苯胺）为电极材料，离子液体为电解质，制成的全电池赝电容器的能量密度和功率密度分别达到84 W·h·kg（cell）（-1）和182 kW·kg（cell）（-1）。以MnO 2纳米管为牺牲模板，采用一步原位化学聚合法合成了聚苯胺纳米管。聚苯胺-纳米管赝电容器在酸性水溶液和离子液体电解质中均表现出比聚苯胺-纳米管赝电容器好得多的电化学性能。重要的是，与酸性水性电解质中的PANi-纳米管赝电容器相比，离子液体与聚苯胺-纳米管的结合已经将PANi-纳米管赝电容器的能量存储容量大幅提高了约5倍。此外，即使在10 000次循环后，离子液体电解质中的PANi-纳米管赝电容器仍保持足够高的能量密度，并且可以点亮LED几分钟，仅需30 s快速充电。
A remarkable energy density of 84 W h kg((cell))(-1) and a power density of 182 kW kg((cell))(-1) have been achieved for full-cell pseudocapacitors using conducting polymer nanotubes (polyaniline) as electrode materials and ionic liquid as electrolytes. The polyaniline nanotubes were synthesized by a one-step in situ chemical polymerization process utilizing MnO2 nanotubes as sacrificial templates. The polyaniline-nanotube pseudocapacitors exhibit much better electrochemical performance than the polyaniline-nanofiber pseudocapacitors in both acidic aqueous and ionic liquid electrolytes. Importantly, the incorporation of ionic liquid with polyaniline-nanotubes has drastically improved the energy storage capacity of the PAni-nanotube pseudocapacitors by a factor of similar to 5 times compared to that of the PAni-nanotube pseudocapacitors in the acidic aqueous electrolyte. Furthermore, even after 10 000 cycles, the PAni-nanotube pseudocapacitors in the ionic liquid electrolyte maintain sufficient high energy density and can light LEDs for several minutes, with only 30 s quick charge.