Polyaniline/diazonium salt/TiO₂ nanotube arrays (PANI/DZ/TiO₂ NAs), as a supercapacitor electrode material, are fabricated by two-step anodic oxidation of titanium foils_, electrochemical grafting and reduction of diazonium salts, and electrochemical deposition of polyaniline. Surface morphology, crystallization, and chemical compositions of nanocomposites are characterized by SEM, EDX, XRD, and Raman. Electrochemical tests indicate that PANI/DZ/TiO₂ NAs have excellent capacitance of 1108.5 F g⁻¹ when the current density is 0.6 A g⁻¹. With the current density increasing 20 times to 12 A g⁻¹, the capacitance remains about 77.5%, demonstrating its good rate performance. Moreover, after 2000 charge–discharge cycles at 12 A g⁻¹, the capacitance retains 83.7% of the initial value, showing its good cycling stability.

聚苯胺/重氮盐/二氧化钛₂纳米管阵列（PANI / DZ /二氧化钛₂ NAS），作为超级电容器的电极材料，是由钛箔的两步阳极氧化制造_，电化学接枝和还原重氮盐，和聚苯胺的电化学沉积。纳米复合材料的表面形态，结晶和化学组成由SEM，EDX，XRD和Raman表征。电化学测试表明，当电流密度为0.6 A g ^-1时，PANI / DZ / TiO ₂ NAs具有出色的1108.5 F g ^-1电容。随着电流密度增加20倍至12 A g ^-1，电容保持约77.5％，表明其良好的倍率性能。此外，在12 A g ^-1下进行2000次充放电循环后，电容保持初始值的83.7％，显示出良好的循环稳定性。