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Choi J, Kim D, Chae JE, Lee S, Kim SM, Yoo SJ, Kim HJ, Choi M, Jang S. Oxygen Plasma-Mediated Microstructured Hydrocarbon Membrane for Improving Interface Adhesion and Mass Transport in Polymer Electrolyte Fuel Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:50956-50965. [PMID: 36327306 DOI: 10.1021/acsami.2c15122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Developing a method for fabricating high-efficient and low-cost fuel cells is imperative for commercializing polymer electrolyte membrane (PEM) fuel cells (FCs). This study introduces a mechanical and chemical modification technique using the oxygen plasma irradiation process for hydrocarbon-based (HC) PEM. The oxygen functional groups were introduced on the HC-PEM surface through the plasma process in the controlled area, and microsized structures were formed. The modified membrane was incorporated with plasma-treated electrodes, improving the adhesive force between the HC-PEM and the electrode. The decal transfer was enabled at low temperatures and pressures, and the interfacial resistance in the membrane-electrode assembly (MEA) was reduced. Furthermore, the micropillar structured electrode configuration significantly reduced the oxygen transport resistance in the MEA. Various diagnostic techniques were conducted to find out the effects of the membrane surface modification, interface adhesion, and mass transport, such as physical characterizations, mechanical stress tests, and diverse electrochemical measurements.
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Affiliation(s)
- Jiwoo Choi
- Global Frontier Center for Multiscale Energy Systems, Seoul National University, Seoul08826, Republic of Korea
- Department of Mechanical Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Dongsu Kim
- Department of Mechanical Engineering, Kookmin National University, Seoul02707, Republic of Korea
| | - Ji Eon Chae
- Department of Mobility Power Research, Korea Institute of Machinery & Materials, 156 Gajeongbuk-ro, Yuseong-gu, Daejeon34103, Korea
| | - Sanghyeok Lee
- Department of Mechanical Engineering, Kookmin National University, Seoul02707, Republic of Korea
| | - Sang Moon Kim
- Department of Mechanical Engineering, Incheon National University, Incheon22012, Republic of Korea
| | - Sung Jong Yoo
- Center for Hydrogen & Fuel Cell Research, Korea Institute of Science and Technology, Seoul02792, Korea
| | - Hyoung-Juhn Kim
- Hydrogen Energy Technology Laboratory, Korea Institute of Energy Technology (KENTECH), 200 Hyeoksin-ro, Naju, Jeonnam58330, Republic of Korea
| | - Mansoo Choi
- Global Frontier Center for Multiscale Energy Systems, Seoul National University, Seoul08826, Republic of Korea
- Department of Mechanical Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Segeun Jang
- Department of Mechanical Engineering, Kookmin National University, Seoul02707, Republic of Korea
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Facile fabrication of durable and flexible superhydrophobic surface with polydimethylsiloxane and silica nanoparticle coating on a polyethylene terephthalate film by hot-roll lamination. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Back Injection Molding of Sub-Micron Scale Structures on Roll-to-Roll Extrusion Coated Films. Polymers (Basel) 2021; 13:polym13091410. [PMID: 33925405 PMCID: PMC8123894 DOI: 10.3390/polym13091410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/22/2021] [Accepted: 04/26/2021] [Indexed: 12/01/2022] Open
Abstract
Roll-to-roll extrusion coated films were bonded onto polymer parts by back injection molding (BIM). The polypropylene (PP) coated polyethylene terephthalate (PET) films were pre-patterned with microstructured V-shaped grooves with 3.2 µm and 53 µm width, and other geometries. Bonding on PET and poly(methyl methacrylate) (PMMA) parts was facilitated by either higher tool or melt temperatures but was particularly enhanced by applying a mild oxygen plasma to the backside of the PET film prior to injection of the polymer melt. Silver wires from conductive nanoparticle ink were embedded into the PP coating during the BIM process by controlled collapse of the V-grooves. Thus, the feasibility of combining standard carrier film materials for printed flexible electronics and packaging into a non-flat polymer part was demonstrated, which could be a helpful step towards the fabrication of polymer parts with surface functionality.
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Polymerization of ε-caprolactone with degraded PET for its functionalization. JOURNAL OF POLYMER RESEARCH 2019. [DOI: 10.1007/s10965-019-1821-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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