1. In-situ crosslinking of polysiloxane electrolyte within Al2O3@SiNWs for quasi-solid-state micro-supercapacitors.
- Author
-
Deschanels, Mathieu, Dietrich, Marc, Gentile, Pascal, Alloin, Fannie, Iojoiu, Cristina, and Sadki, Saïd
- Subjects
- *
ELECTROLYTES , *POLYELECTROLYTES , *SILICON nanowires , *SUPERCAPACITOR electrodes , *ELECTRODES , *LIQUID mixtures , *IONIC liquids - Abstract
Developing flexible solid-state micro-supercapacitors with large potential window is crucial for many technologies. The present study focuses on the synthesis and elaboration of quasi-solid-state (QSS) electrolytes with an electrochemical stability greater than 3.0 V based on functionalized polysiloxane. Their electrochemical behavior was studied with silicon nanowires electrodes. The polysiloxane was functionalized with both ammonium and cross-linkable functions. The nanostructured electrodes were impregnated with a mixture of ionic liquid and functionalized polysiloxane. The crosslinking of the polymer electrolyte was then performed by thermal curing directly within the nanostructured electrodes. The quasi-solid system exhibits very high stability upon galvanostatic cycling i.e. during 100 000 cycles with a cell potential of 3.0 V only a capacitance loss of 2.10−5% per cycle was registered. The performance of this QSS with safe electrolyte is remarkable. [Display omitted] [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF