Ultrathin Nafion-filled porous membrane for zinc/bromine redox flowbatteries

Collection with item attached
2017
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/486690.do
DOI
10.1038/s41598-017-10850-9
Title
Ultrathin Nafion-filled porous membrane for zinc/bromine redox flowbatteries
Description
This work was supported by the Korea Institute of Energy TechnologyEvaluation and Planning (KETEP) and the Ministry of Trade, Industry &Energy (MOTIE) of the Republic of Korea (No. 20152010103210).
abstract
In this work, we present a 16 mu m-thick Nafion-filled porous membrane for Zn/Br redox flow batteries (ZBBs). By using molecular dynamics simulation and dynamic light scattering analysis, we rationally design Nafion solution for Nafion impregnation into a porous polypropylene (PP) separator. A void-free Nafion/PP membrane is successfully fabricated by using NMP as a solvent for the Nafion solution. The resulting membrane shows a smaller area specific resistance in comparison with 600 mu m-thick, commercial SF-600 porous membrane. Due to its dense morphology, Br-2 diffusivity of the Nafion/PP membrane is two orders of magnitude lower than that of SF-600, resulting in a comparable Br-2 crossover in spite of 37.5 times smaller membrane thickness. As a result, the ZBB based on the Nafion/PP membrane exhibits a higher energy efficiency, demonstrating that ion exchange membrane can outperform the conventional porous membrane by reducing the membrane thickness with inexpensive porous substrate.
provenance
Made available in Cube on 2018-09-28T16:14:20Z (GMT). No. of bitstreams: 0
language
English
author
Kim, Riyul
Kim, Hyun Gyu
Doo, Gisu
Choi, Chanyong
Kim, Soohyun
Lee, Ju-Hyuk
Heo, Jiyun
Jung, Ho-Young
Kim, Hee-Tak
orcid
Kim, Hee-Tak/0000-0003-4578-5422
accessioned
2018-09-28T16:14:20Z
available
2018-09-28T16:14:20Z
issued
2017
citation
SCIENTIFIC REPORTS(7)
issn
2045-2322
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/486690.do
Funder
산업통상자원부
Funding Program
ESS기술개발사업
Project ID
1415154495
Jurisdiction
Rep.of Korea
Project Name
Development of High Durability and Ion Blocking Type Commercial Size Membrane for Flow Battery
rights
openAccess
type
article


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