| Autor: |
Saeed, Aiman, Zaidi, Syed Farrukh Alam, Mun, Junyoung, Cho, Hyung Koun, Jung, Seung-Boo, Lee, Nae-Eung, Park, Chun Gwon, Lee, Jung Heon |
| Zdroj: |
Journal of Materials Chemistry C; 5/7/2024, Vol. 12 Issue 17, p6213-6225, 13p |
| Abstrakt: |
Flexible electronics based on soft hydrogels have garnered significant attention due to their superior mechanical durability, conductivity, freezing tolerance, and low dehydration rates. Moreover, hydrogels often exhibit a substantial decrease in conductivity at low temperatures despite their advantageous properties and adaptability. For applications requiring consistent performance under colder conditions, there is a pressing need to devise a strategy that ensures hydrogels maintain high conductivity even at reduced temperatures. This study introduces an innovative strategy for developing a gelatin-based hydrogel that exhibits inverse temperature-dependent ionic conductivity, substantial mechanical toughness, freezing tolerance, and minimal dehydration. Treating the gelatin hydrogels with composite salt solutions, containing anti-freezing acetate and chloride salts, notably increased the ionic conductivity of the hydrogel from 47.2 mS cm−1 to 62.5 mS cm−1 as the temperature decreased to approximately 5 °C. Excellent conductivity of 52.1 mS cm−1 was observed even at −27 °C. The proposed hydrogel can be used in flexible electronics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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