We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Halide Salt‐Catalyzed Crosslinked Polyurethanes for Supercapacitor Gel Electrolyte Applications.
- Authors
Wei Chien, Sheau; Tay, Jacob J. M.; Chee, Celestine P. T.; Jun Loh, Xian; Fam, Derrick W. H.; Lim, Jason Y. C.
- Abstract
Gel polymer electrolytes are an important advancement in energy storage technology due to their enhanced safety and practical ionic conductivities at ambient temperatures. Herein, a simple one‐step facile synthesis of chemically crosslinked polyurethanes containing polyethylene oxide (PEO) and polypropylene oxide (PPO) macromolecular segments was developed, using ubiquitous non‐toxic tetrabutylammonium or potassium chloride and bromide salts as catalysts. These salts were shown to catalyze the gelation of diol‐diisocyanate polyaddition reactions within minutes. When impregnated with a liquid electrolyte, the resulting gel electrolyte exhibited a practical ionic conductivity of 1.1×10−4 S cm−1 at 40 °C and low segmental chain motion activation energy (11 kJ mol−1). These findings further promote PEO‐PPO polyurethanes as a biocompatible class of materials suitable for further exploration as gel polymer electrolytes for supercapacitors.
- Subjects
POLYMER colloids; POLYELECTROLYTES; POLYURETHANES; POLYPROPYLENE oxide; ELECTROLYTES; ENERGY storage; IONIC conductivity
- Publication
ChemSusChem, 2021, Vol 14, Issue 16, p3237
- ISSN
1864-5631
- Publication type
Article
- DOI
10.1002/cssc.202101310