A Hydrogel of Ultrathin Pure Polyaniline Nanofibers: Oxidant-Templating Preparation and Supercapacitor Application

作者：Zhou, Kun; He, Yuan; Xu, Qingchi; Zhang, Qin'e; Zhou, An'an; Lu, Zihao; Yang, Li-Kun; Jiang, Yuan^*; Ge, Dongtao^*; Liu, Xiang Yang; Bai, Hua^*

来源：ACS Nano, 2018, 12(6): 5888-5894.

DOI：10.1021/acsnano.8b02055

• vanadium pentoxide
• supercapacitor
• polyaniline
• hydrogel
• conducting polymer

Although challenging, fabrication of porous conducting polymeric materials with excellent electronic properties is crucial for many applications. We developed a fast in situ polymerization approach to pure polyaniline (PANI) hydrogels, with vanadium pentoxide hydrate nanowires as both the oxidant and sacrifice template. A network comprised of ultrathin PANI nanofibers was generated during the in situ polymerization, and the large aspect ratio of these PANT nanofibers allowed the formation of hydrogels at a low solid content of 1.03 wt %. Owing to the ultrathin fibril structure, PANI hydrogels functioning as a supercapacitor electrode display a high specific capacitance of 636 F g(-1), a rate capability, and good cycling stability (similar to 83% capacitance retention after 10,000 cycles). This method was also extended to polypyrrole and poly(3,4-ethylenedioxythiophene) hydrogels. This template polymerization method represents a rational strategy for design of conducing polymer networks, which can be readily integrated in high-performance devices or a further platform for functional composites.

• 出版日期2018-6
• 单位厦门大学