A
Triblock Copolymer Design Leads to Robust Hybrid
Hydrogels for High-Performance Flexible Supercapacitors
Guangzhao Zhang
Yunhua Chen
Yonghong Deng
Chaoyang Wang
10.1021/acsami.7b11572.s002
https://acs.figshare.com/articles/media/A_Triblock_Copolymer_Design_Leads_to_Robust_Hybrid_Hydrogels_for_High-Performance_Flexible_Supercapacitors/5481493
We
report here an intriguing hybrid conductive hydrogel as electrode
for high-performance flexible supercapacitor. The key is using a rationally
designed water-soluble ABA triblock copolymer (termed as IAOAI) containing
a central poly(ethylene oxide) block (A) and terminal poly(acrylamide)
(PAAm) block with aniline moieties randomly incorporated (B), which
was synthesized by reversible additional fragment transfer polymerization.
The subsequent copolymerization of aniline monomers with the terminated
aniline moieties on the IAOAI polymer generates a three-dimensional
cross-linking hybrid network. The hybrid hydrogel electrode demonstrates
robust mechanical flexibility, remarkable electrochemical capacitance
(919 F/g), and cyclic stability (90% capacitance retention after 1000
cycles). Moreover, the flexible supercapacitor based on this hybrid
hydrogel electrode presents a large specific capacitance (187 F/g),
superior to most reported conductive hydrogel-based supercapacitors.
With the demonstrated additional favorable cyclic stability and excellent
capacitive and rate performance, this hybrid hydrogel-based supercapacitor
holds great promise for flexible energy-storage device.
2017-09-25 00:00:00
IAOAI
stability
capacitance
hydrogel electrode
aniline moieties
Robust Hybrid Hydrogels
ABA triblock copolymer
Triblock Copolymer Design
cyclic
conductive hydrogel-based supercapacitors
fragment transfer polymerization