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Poly(p-phenylene)-based membrane materials with excellent cell efficiencies and durability for use in vanadium redox flow batteries

Title
Poly(p-phenylene)-based membrane materials with excellent cell efficiencies and durability for use in vanadium redox flow batteries
Author
오성근
Keywords
ANION-EXCHANGE MEMBRANE; FUEL-CELLS; ELECTROCHEMICAL APPLICATIONS; POLYBENZIMIDAZOLE MEMBRANES; MULTIBLOCK COPOLYMERS; LOW PERMEABILITY; ENERGY-STORAGE; PERFORMANCE; IONOMERS; DENSITY
Issue Date
2017-06
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v. 5, no. 24, page. 12285-12296
Abstract
Poly(p-phenylene)-based ionomers with remarkable durability and rate capability for use in vanadium redox flow batteries (VRFBs) are reported. The family of synthesized ionomers, sPBPSP-z, exhibited not only well-developed phase separation between hydrophilic domains and hydrophobic domains but also well-connected hydrophilic channels, resulting in enhanced proton conductivities and excellent dimensional stabilities. sPBPSP-8, which has an ion exchange capacity of 1.83 meq g(-1), showed high discharge capacity retention and superior efficiencies over 100 cycles at a current density of 50 mA cm(-2). In addition, the sPBPSP-8 ionomer exhibited stable performance at various current densities (50-180 mA cm(-2)) and retained high efficiencies at high current densities. Furthermore, this material exhibited superior chemical stability under oxidizing conditions, excellent capacity retention, and high efficiencies during long-term VRFB operation (1000 cycles). These results indicate that the sPBPSP-8 membrane is a superb material for VRFB applications.
URI
https://pubs.rsc.org/en/content/articlelanding/2017/TA/C7TA03131A#!divAbstracthttps://repository.hanyang.ac.kr/handle/20.500.11754/114357
ISSN
2050-7488; 2050-7496
DOI
10.1039/c7ta03131a
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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