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Preparation and characterization of SPES/PVA (double-layer) membrane for vanadium redox flow battery
- Source :
- High Performance Polymers. 31:148-153
- Publication Year :
- 2018
- Publisher :
- SAGE Publications, 2018.
-
Abstract
- The double-layer membrane consisting of sulfonated poly(ether sulfone) (SPES) sub-layer and polyvinyl alcohol (PVA) sub-layer (denoted as SPES/PVA membrane) was prepared and employed as the separator for vanadium redox flow battery (VRB) system to evaluate the vanadium ions permeability and cell performance. The SPES/PVA membrane is a double-layer structure and exhibits dramatically lower vanadium ions permeability and better cell performance compared to the pristine SPES membrane, PVA membrane, and Nafion117 membrane. The vanadium ion permeability of SPES/PVA membrane is one order of magnitude lower than that of Nafion117 membrane. In further work, the single cell with SPES/PVA membrane showed significantly lower capacity loss, higher coulombic efficiency (>92.5%), and higher energy efficiency (>83.9%) than Nafion117 membrane. In the self-discharge test, SPES/PVA membrane showed 1.8 times longer duration in the open circuit decay than Nafion117 membrane. With all the good properties and low cost, this new kind of double-layer membrane is suggested to have excellent commercial prospects as an ion exchange membrane for VRB systems.
- Subjects :
- Materials science
integumentary system
Polymers and Plastics
Organic Chemistry
Vanadium
chemistry.chemical_element
02 engineering and technology
021001 nanoscience & nanotechnology
Flow battery
Redox
Polyvinyl alcohol
chemistry.chemical_compound
Membrane
020401 chemical engineering
chemistry
Chemical engineering
Permeability (electromagnetism)
Materials Chemistry
0204 chemical engineering
0210 nano-technology
Faraday efficiency
Separator (electricity)
Subjects
Details
- ISSN :
- 13616412 and 09540083
- Volume :
- 31
- Database :
- OpenAIRE
- Journal :
- High Performance Polymers
- Accession number :
- edsair.doi...........c304d05399ebc7d888138311ce3f7d87