کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6472740 | 1424136 | 2016 | 8 صفحه PDF | دانلود رایگان |
- Reduced graphene oxide/polyaniline/Vulcan carbon nanocomposites were prepared through a simple sonication method.
- Vulcan carbons act as spacer to increase the active sites for electrochemical reaction.
- The nanocomposite as a supercapacitor material exhibits excellent rate capability and cycling stability.
Three-dimensional ternary nanocomposites of reduced graphene oxide/polyaniline/Vulcan carbon (rGO/PANI/VC) were prepared through a simple sonication method. The Vulcan carbons within rGO/polyaniline composites (rGO/PANI) act as spacer to enhance the active sites for electrochemical reaction, resulting in the improvement of capacitive performances. Extra ion-diffusion paths were also created accordingly, resulting in the improvement of rate performance. Additionally, the cycle stability was improved by providing the space for stable expansion of PANI during capacitive reaction. The specific capacitance estimated by cycle voltammetry was enhanced to 446Â FÂ gâ1 at a scan rate of 5Â mVÂ sâ1, while rGO/PANI showed 347Â FÂ gâ1. In addition, the rGO/PANI/VC exhibited better rate capability of 87% at 100Â mVÂ sâ1 (compared with â¼85% for the rGO/PANI) and cycle stability of 80% after 2000 cycles at 10Â AÂ gâ1 (compared with a 62.9% for the rGO/PANI). It is believed that rGO/PANI/VC with unique structure can be prospective electrode materials for supercapacitors.
The paper reported a ternary nanocomposite of reduced graphene oxide/polyaniline/Vulcan carbon (rGO/PANI/VC) using facile sonication method. The nanocomposite as a supercapacitor material exhibits excellent rate capability and cycling stability.70
Journal: Electrochimica Acta - Volume 221, 10 December 2016, Pages 23-30