title: Design of polypyrrole/polyaniline double-walled nanotube arrays for electrochemical energy storage.
abstract: The novel hybrid polypyrrole (PPy)/polyaniline (PANI) double-walled nanotube arrays (DNTAs) were designed to exploit the synergistic effects and shape effects for supercapacitive energy storage. The PPy/PANI DNTAs showed large specific capacitance (Csp) of 693 F/g at a scan rate of 5 mV/s. The PPy/PANI DNTAs also exhibited good rate capability and high long-term cycle stability (less 8% loss of the maximum specific capacitance after 1000 cycles). The synergistic effects between PPy and PANI, the shape effects of nanotube arrays and double-walled nanostructures, and high utilization rate of electrode are crucial for the outstanding performance of PPy/PANI DNTAs. The large Csp, good rate capability, and high long-term cycle stability offered by the PPy/PANI DNTAs, make them promising candidate electrodes for high-performance supercapacitors.
authors: MOE Laboratory of Bioinorganic and Synthetic Chemistry, KLGHEI of Environment and Energy Chemistry, School of Chemistry and Chemical Engineering, Sun Yat-sen University , Guangzhou 510275, China.
authors: Zi-Long
authors: ZL
authors: Wang
authors: Xu-Jun
authors: XJ
authors: He
authors: Sheng-Hua
authors: SH
authors: Ye
authors: Ye-Xiang
authors: YX
authors: Tong
authors: Gao-Ren
authors: GR
authors: Li