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Ultraflexible and tailorable all–solid–state supercapacitors by using polyacrylamide-based hydrogel electrolyte with highly ionic conductivity

Abstract

Highly ionic conducting hydrogels consisting cross–linked polymer network swollen with water are very promising to be used as electrolyte for all–solid–state supercapacitors. However, there are rather few flexible supercapacitors reported by using ionic conducting hydrogel electrolytes so far. In this work, highly flexible and ionic conducting polyacrylamide hydrogels were synthesized through a simple approach. By using the ionic hydrogels as electrolyte, the resulting supercapacitors not only exhibited highly specific capacitance, but also showed a long self–discharge time (over 10 hours to the half of original open–circuit voltage) and a low leakage current. These newly–developed all–solid–state supercapacitors can be bent, knot, kneaded for 5000 cycles without performance decay, suggesting excellent flexibility and mechanical stability. These all–solid–state supercapacitors can also be easily tailored into strip–like supercapacitors without short circuit, which provide an efficient approach to fabricate wearable energy storage devices.

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Publication details

The article was accepted on 29 Oct 2017 and first published on 31 Oct 2017


Article type: Paper
DOI: 10.1039/C7NR07424G
Citation: Nanoscale, 2017, Accepted Manuscript
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    Ultraflexible and tailorable all–solid–state supercapacitors by using polyacrylamide-based hydrogel electrolyte with highly ionic conductivity

    H. Li, T. Lv, N. Li, Y. Yao, K. Liu and T. Chen, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR07424G

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