Journal
SOLID STATE IONICS
Volume 309, Issue -, Pages 27-32Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2017.06.017
Keywords
Polyhedral oligomeric silsesquioxanes; Ionogel; Lithium ion capacitor; Epoxy
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Funding
- Fundamental R & D Program for Core Technology of Materials
- Industrial Strategic Technology Development Program - Ministry of Knowledge Economy, Republic of Korea
- Materials Architecturing Research Center of Korea Institute of Science and Technology (KIST)
- Korea Research Fellowship Program
- Ministry of Science, ICT, and Future Planning through the National Research Foundation of Korea
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning
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Thermally curable hybrid ionogel electrolytes consisting of epoxy-functionalized POSS, amine-terminated polypropylene glycol, and ionic liquid electrolyte, 1 M LiTFSI in BMPTFSI were fabricated to give ionic conducting epoxy networks with cubic inorganic star networks crosslinked with lithium ion dissociating polypropylene glycol linkers. Characterization of these hybrid ionogels revealed high ion conduction, exceptional thermal stability, and electrochemical stability. Lithium ion capacitors fabricated with these hybrid ionogels revealed exceptional performance on par with the neat liquid ionic liquid electrolyte, and far superior over ionogels fabricated with conventional organic crosslinkers, due to the mechanical robustness and lithium ion dissociative character imparted by the POSS and PPG functionalities.
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