Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 1, Issue 9, Pages 3055-3060Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ta00784c
Keywords
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Funding
- National Science Council of Taiwan
- Academia Sinica, Nankang, Taipei, Taiwan
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A novel amphiphilic copolymer, poly(oxyethylene)-amide-imide (POEM), was synthesized and utilized for gelling an ionic liquid electrolyte. The polymer-gelled ionic liquid (PG-IL) electrolyte containing 1-methyl-3-propylimidazolium iodide (PMII), 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIBF4) and POEM has been employed as a quasi-solid-state electrolyte in DSSCs. By adding the POEM to a room temperature ionic liquid (RTIL) electrolyte up to 5 wt%, the binary electrolyte exhibited a quasi-solid-state. The structure of the PG-IL electrolyte with POE segments, which have lone pair electrons, could cause the ionic pair separation and enhance mobility of the counter I- ions. When fabricated into a quasi-solid-state dye-sensitized solar cell, the cell performance exhibited a high power conversion efficiency of 6.28% and long-term durability over 1000 h.
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