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A freezing-tolerant superior proton conductive hydrogel comprised of sulfonated poly(ether–ether–ketone) and poly(vinyl-alcohol) as a quasi-solid-state electrolyte in a proton battery.
- Source :
- Journal of Materials Chemistry C; 10/14/2023, Vol. 11 Issue 38, p13113-13119, 7p
- Publication Year :
- 2023
-
Abstract
- Aqueous proton batteries (APBs) are regarded as one of the most promising energy storage devices for the next-generation batteries owing to their high safety, high power density and environmental friendliness, while the study of their electrolytes is still in the infancy regarding metal-based batteries. Herein, we present a double-network hydrogel as a quasi-solid-state electrolyte in a proton battery. Sulfonated poly(ether–ether–ketone) and an ethylene glycol/water solvent are incorporated within the poly(vinyl alcohol) hydrogel network to enhance the mechanical properties, resulting in a tensile strength of 4.37 MPa and a toughness strain of 663%. This composite also exhibits remarkable proton conductivity (8.8 × 10<superscript>−3</superscript>/1.1 × 10<superscript>−1</superscript> S cm<superscript>−1</superscript> at −35/70 °C, ambient humidity) and low temperature tolerance (−50 °C). A quasi-solid-state proton "rocking-chair" battery demonstrates stable cycling and high rate capability (77% capacity retention after 500 cycles at 1 A g<superscript>−1</superscript> at 25 °C and 95% capacity retention rate over 100 cycles at −20 °C). This study provides a new possible practical application of hydrogel as a proton battery electrolyte, which could advance the development of proton electrochemical devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507526
- Volume :
- 11
- Issue :
- 38
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry C
- Publication Type :
- Academic Journal
- Accession number :
- 172784073
- Full Text :
- https://doi.org/10.1039/d3tc02665e