A new class of highly-conducting polymer electrolyte membranes: Aromatic ABA triblock copolymers
- Title
- A new class of highly-conducting polymer electrolyte membranes: Aromatic ABA triblock copolymers
- Author
- 이영무
- Keywords
- PROTON-EXCHANGE MEMBRANE; SULFONIC-ACID GROUPS; FUEL-CELLS; POLY(2,6-DIMETHYL-1,4-PHENYLENE OXIDE); INTERMEDIATE TEMPERATURE; RADICAL POLYMERIZATION; MULTIBLOCK COPOLYMERS; MOLECULAR-WEIGHT; PROTOGENIC GROUP; PHOSPHONIC ACID
- Issue Date
- 2012-02
- Publisher
- Royal SOC Chemistry
- Citation
- Energy & Environmental Science, 2012, 5(1), P.5346-5355
- Abstract
- Highly proton-conducting polymer electrolyte membrane (PEMs) materials are presented as alternatives to state-of-the-art perfluorinated polymers such as Nafion (R). To achieve stable PEMs with efficient ionic nanochannels, novel fully aromatic ABA triblock copolymers (SP3O-b-PAES-b-SP3O) based on sulfonated poly(2,6-diphenyl-1,4-phenylene oxide)s (A, SP3O) and poly(arylene ether sulfone)s (B, PAES) were synthesized. This molecular design for a PEM was implemented to promote the nanophase separation between the hydrophobic polymer chain and hydrophilic ionic groups, and thus to form well-connected hydrophilic nanochannels that are responsible for the water uptake and proton conduction. Relative to other hydrocarbon-based PEMs, the triblock copolymer membranes showed a dramatic enhancement in proton conductivity under partially hydrated conditions, and superior thermal, oxidative and hydrolytic stabilities, suggesting that they have the potential to be utilized as alternative materials in applications operating under partly hydrated environments.
- URI
- http://pubs.rsc.org/en/Content/ArticleLanding/2012/EE/C1EE02556B#!divAbstract
- ISSN
- 1754-5692
- DOI
- 10.1039/c1ee02556b
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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