Conducting polymers have attained a lot of interest due to extraordinary conductivity, large pore size, and surprising stability. In this work, the conducting polymer polyaniline (PANI) and niobium sulfide (NbS) were synthesized by polymerization of aniline and hydrothermal method, respectively. The PANI@NbS nanocomposite electrode material had a specific capacity (C_s) of 1050 C g⁻¹, which is larger than that of the reference sample (NbS = 300 C g⁻¹). Besides, the hybrid device (PANI@NbS//PANI@AC) was designed and the electrochemical characteristics were determined. The hybrid device showed an excellent value of C_s of 1207 C g⁻¹ with higher energy density E_d and power density P_d. The device also exhibited remarkable stability, and 85 % of the initial capacity is retained after 1000 cycles.

中文翻译：

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用于非对称超级电容器的高性能、稳定的聚苯胺@硫化铌电极

导电聚合物由于非凡的导电性、大孔径和令人惊讶的稳定性而引起了广泛的关注。本工作分别采用苯胺聚合法和水热法合成了导电聚合物聚苯胺（PANI）和硫化铌（NbS）。PANI@NbS纳米复合电极材料的比容量（C _s）为1050 C g ^-1，大于参考样品（NbS = 300 C g ^-1）。此外，还设计了混合器件（PANI@NbS//PANI@AC）并测定了其电化学特性。该混合器件表现出1207 C g ^-1的优异C _s值以及更高的能量密度E _d和功率密度P _d。该装置还表现出卓越的稳定性，1000次循环后仍保留了85%的初始容量。