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Surface Modification of Sulfonated Poly(phenylene oxide) Membrane for Vanadium Redox Flow Batteries

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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.
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Keywords: Polydopamine; Redox Flow Battery; Sulfonated Poly(phenylene oxide)

Document Type: Research Article

Affiliations: 1: College of General Education, Chosun University, 309 Pilmoon-daero, Dong-gu, Gwangju, 61452, Republic of Korea 2: Department of Environment & Energy Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju, 61186, Republic of Korea 3: Department of Environmental Education, Mokpo National University, 61 Muan-gun, Mokpo, 58554, Republic of Korea 4: Department of Fire Service Administration, Honam University, 120 Honamdae-gil, Gwangsan-gu, Gwangju, 62399, Korea 5: Korea Electric Power Corporation, Research Institute, 105 Munji-ro, Yuseong-gu, Daejeon, 34056, Republic of Korea 6: Centre for Nano and Material Sciences, JAIN (Deemed to be University), Jain Global Campus, Bengaluru 562112, Karnataka, India

Publication date: September 1, 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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