Journal
MATERIALS CHEMISTRY AND PHYSICS
Volume 273, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2021.125128
Keywords
Polyaniline nanosheet; Reduced graphene oxide; Electrode materials; Electrochemical properties; Flexible supercapacitor
Categories
Funding
- National Natural Science Foundation of China [61574091]
- Natural Science Foundation of Shanghai [17ZR1414100]
- Foundation for SMC Excellent Young Teacher in Shanghai Jiao Tong University
- Instrumental Analysis Center of Shanghai Jiao Tong University
- Center for Advanced Electronic Materials and Devices of Shanghai Jiao Tong University
Ask authors/readers for more resources
Graphene/polyaniline composite with binary nanosheet frameworks show promise as high-capacity flexible electrodes for supercapacitors. The novel morphology of polyaniline nanosheets, synthesized without additional template material, demonstrate excellent pseudocapacitance properties. The stacked framework of polyaniline nanosheets and reduced graphene oxide can achieve high specific areal capacitance even with high weight content.
Graphene/polyaniline composites with a unique structure serve as a crucial class of materials for supercapacitor (SC) electrodes. In this work, we design and construct binary nanosheet frameworks of graphene/polyaniline composite for high-capacity flexible all-solid-state SCs. Novel morphological PANI nanosheets are synthesized by a self-assembly process at -20 degrees C without using additional template material. The as-prepared PANI nanosheets are 1-5 mu m lateral dimension and 40-50 nm thickness. The PANI nanosheets exhibit excellent pseudocapacitance properties and are potential supercapacitor materials. The sacked framework based on PANI nanosheets and reduced graphene oxide (rGO) are successfully constructed, even the weight content of PANI is as high as 82%. The rGO/PANI-82% electrode in aqueous symmetric SCs presents a high specific areal capacitance (C-a) of 684 mF cm(-2) at 1 mA cm(-2). Furthermore, the resulting rGO/PANI-67% electrode-based all-solid-state SC device is fabricated. The device exhibits an energy density of 21 mu Wh cm(-2) (or 4.2 Wh L-1 or 10.2 Wh kg(-1)) at a power density of 252 mu Wcm(-2) (or 50.4 W L-1 or 121 W kg(-1)). Overall, the new method of synthesizing polyaniline nanosheets reported here and as-designed structures pave the way to advancements in high-capacity flexible electrodes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available