Journal
POLYMERS
Volume 12, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/polym12040928
Keywords
polyaniline; nanofiber; hydrogel; multilayer graphene; supercapacitor; composite; conductive polymer
Categories
Funding
- Yeungnam University [217A580021]
Ask authors/readers for more resources
Electroactive polymer hydrogel offers several advantages for electrical devices, including straightforward synthesis, high conductivity, excellent redox behavior, structural robustness, and outstanding mechanical properties. Here, we report an efficient strategy for generating polyvinyl alcohol-polyaniline-multilayer graphene hydrogels (PVA-PANI-MLG HDGs) with excellent scalability and significantly improved mechanical, electrical, and electrochemical properties; the hydrogels were then utilized in coin cell supercapacitors. Production can proceed through the simple formation of boronate (-O-B-O-) bonds between PANI and PVA chains; strong intermolecular interactions between MLG, PANI, and PVA chains contribute to stronger and more rigid HDGs. We identified the optimal amount of PVA (5 wt.%) that produces a nanofiber-like PVA-PANI HDG with better charge transport properties than PANI HDGs produced by earlier approaches. The PVA-PANI-MLG HDG demonstrated superior tensile strength (8.10 MPa) and higher specific capacitance (498.9 F/cm(2), 166.3 F/cm(3), and 304.0 F/g) than PVA-PANI HDGs without MLG. The remarkable reliability of the PVA-PANI-MLG HDG was demonstrated by 92.6% retention after 3000 cycles of galvanostatic charge-discharge. The advantages of this HDG mean that a coin cell supercapacitor assembled using it is a promising energy storage device for mobile and miniaturized electronics.
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