Surface Modification of Sulfonated Poly(phenylene oxide) Membrane for Vanadium Redox Flow Batteries
| Autor: | Dae-Kweon Kang, Sang-Chai Kim, Ho-Young Jung, Mahaveer D. Kurkuri, Dong Seok Shin, Sung-Hee Roh, Ung-il Kang, Won-Shik Park |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Biomedical Engineering Oxide Vanadium chemistry.chemical_element Bioengineering General Chemistry Electrolyte engineering.material Condensed Matter Physics chemistry.chemical_compound Membrane chemistry Coating Chemical engineering Phenylene engineering Surface modification General Materials Science Chemical stability |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 20:5765-5770 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2020.17625 |
| Popis: | Sulfonated poly(phenylene) oxide (sPPO) polymer is coated in a dopamine hydrochloride solution to prepare a highly durable, low-price polymer membrane for vanadium redox flow batteries (VRFBs). The polydopamine (PDA) coating on the sPPO membrane is confirmed using SEM and EDX analysis. sPPO coated with PDA exhibits decreased proton conductivity due to high resistance. However, VO+2 reducibility tests shows that the chemical stability is improved due to the introduction of the PDA coating layer on the sPPO membrane, which has a chemical structure with poor durability in VO+2 solution under the operating conditions of a VRFB. These results show that this polymer electrolyte membrane based on PDA-coated sPPO is a candidate for application in the long-term operation of VRFBs. |
| Databáze: | OpenAIRE |
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