[논문]Intrinsic swelling behavior of free-standing nanoporous ionomer-bound carbon films

Pyo, Jae-Bum; Lee, Sangmin; Kim, Taek-Soo

doi:10.1016/j.polymertesting.2021.107241

[해외논문] Intrinsic swelling behavior of free-standing nanoporous ionomer-bound carbon films 원문보기

Polymer testing, v.100, 2021년, pp.107241 -

Pyo, Jae-Bum (Corresponding author.) , Lee, Sangmin , Kim, Taek-Soo

Abstract ▼ AI-Helper

Abstract Nanoporous ionomer-bound carbon films are frequently operated in the wet environments when they applied as electrode materials in advanced devices, such as polymer electrolyte membrane fuel cells, and electro-active polymer actuators. However, the intrinsic swelling behavior is still concealed because of the challenge in obtaining the film in free-standing form due to its inherent brittleness. Here, we report the pure swelling characteristic of the film under various temperature and humidity by attaining the free-standing film. Mismatched strain is adopted for the separation of the films from the coating substrates. The swelling strain of the free-standing films is measured in-situ by a digital image correlation method. Simultaneously, the electrical resistance is measured by a digital multimeter and it is correlated with the microstructural alteration caused by the swelling. Macroscopic swelling is discovered in contrast to the conventional knowledge that the electrode is dimensionally stable due to the absorption of ionomer's swelling into pore spaces. The nanoporous electrodes demonstrate in-plane swelling of 1–4% at 90 %RH depending on the weight fraction of ionomer. In spite of the macroscopic swelling, the ionomer 30 wt% containing electrode is electrically stable but the ionomer 80 wt% electrode shows 10 times increased electrical resistances. The correlated characteristics reveal that the film has a structural transition from decoupling to coupling between the macroscopic swelling and the electrical resistance depending on the ionomer's binding structure. Highlights Unveiled swelling nature of free-standing nanoporous ionomer-bound carbon films. Intrinsic hygrothermal strain of the films reported for the first time. Electrical sensitivity to the swelling depending on the ionomer's binding structure. Graphical abstract [DISPLAY OMISSION]

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Appl. Catal. B Environ. Antolini 88 1-2 1 2009 Carbon supports for low-temperature fuel cell catalysts
J. Mater. Chem. Palmre 21 8 2577 2011 10.1039/c0jm01729a Electroactive polymer actuators with carbon aerogel electrodes

상세보기
J. Power Sources Sharma 173 2 1024 2007 10.1016/j.jpowsour.2007.08.076 Carbon-supported, nano-structured, manganese oxide composite electrode for electrochemical supercapacitor

상세보기
J. Appl. Electrochem. Wilson 22 1 1 1992 10.1007/BF01093004 Thin-film catalyst layers for polymer electrolyte fuel cell electrodes

상세보기
J. Electrochem. Soc. Zhao 165 6 F3337 2018 10.1149/2.0391806jes Experimental observations of microstructure changes in the catalyst layers of proton exchange membrane fuel cells under wet-dry cycles

상세보기
J. Power Sources Rong 175 2 699 2008 10.1016/j.jpowsour.2007.10.006 Microstructure changes in the catalyst layers of PEM fuel cells induced by load cycling: Part I. Mechanical model

상세보기
Electrochem. Commun. Yin 109 106590 2019 10.1016/j.elecom.2019.106590 Ionomer migration within PEMFC catalyst layers induced by humidity changes

상세보기
J. Fuel Cell Sci. Technol. Uchiyama 9 6 2012 10.1115/1.4007814 Mechanical degradation mechanism of membrane electrode assemblies in buckling test under humidity cycles

상세보기
J. Power Sources Tavassoli 322 17 2016 10.1016/j.jpowsour.2016.05.016 Effect of catalyst layer defects on local membrane degradation in polymer electrolyte fuel cells

상세보기
Mater. Sci. Eng., A Tang 425 1-2 297 2006 10.1016/j.msea.2006.03.055 An experimental investigation of humidity and temperature effects on the mechanical properties of perfluorosulfonic acid membrane

상세보기
J. Power Sources Goulet 274 94 2015 10.1016/j.jpowsour.2014.10.040 Water sorption and expansion of an ionomer membrane constrained by fuel cell electrodes

상세보기
ACS Appl. Mater. Interfaces Morris 6 18609 2014 10.1021/am503509j Effect of water sorption on the electronic conductivity of porous polymer electrolyte membrane fuel cell catalyst layers

상세보기
Int. J. Hydrogen Energy Ahadi 44 3603 2019 10.1016/j.ijhydene.2018.12.016 Electronic conductivity of catalyst layers of polymer electrolyte membrane fuel cells: through-plane vs.in-plane

상세보기
J. Therm. Sci. Technol. Tsushima 10 1 JTST0002 2015 10.1299/jtst.2015jtst0002 An overview of cracks and interfacial voids in membrane electrode assemblies in polymer electrolyte fuel cells

상세보기
ACS Appl. Mater. Interfaces Kim 8 24 15391 2016 10.1021/acsami.6b03854 Mechanical behavior of free-standing fuel cell electrodes on water surface

상세보기
Prog. Org. Coating Dickie 25 1 3 1994 10.1016/0300-9440(94)00500-1 Paint adhesion, corrosion protection, and interfacial chemistry

상세보기
Construct. Build. Mater. Metelli 102 1018 2016 10.1016/j.conbuildmat.2015.09.038 On the delamination phenomenon in the repair of timber beams with steel plates

상세보기
IEEE Trans. Compon. Packag. Technol. Teh 28 3 506 2005 10.1109/TCAPT.2005.848572 Moisture-induced failures of adhesive flip chip interconnects

상세보기
J. Mater. Chem. Pyo 8 24763 2020 10.1039/D0TA07861A Highly robust nanostructured carbon films by thermal reconfiguration of ionomer binding

상세보기
Nat. Commun. Kim 6 8547 2015 10.1038/ncomms9547 Flexible, highly efficient all-polymer solar cells

상세보기
Langmuir Kang 34 20 5831 2018 10.1021/acs.langmuir.8b01063 Layer-by-Layer assembly of free-standing Nanofilms by controlled rolling

상세보기
Soft Matter Pyo 12 18 4135 2016 10.1039/C5SM03109E Prediction of time-dependent swelling of flexible polymer substrates using hygro-mechanical finite element simulations

상세보기
Nano Lett. Huang 14 11 6293 2014 10.1021/nl5026369 Precision structural engineering of self-rolled-up 3D nanomembranes guided by transient quasi-static FEM modeling

상세보기
Nat. Commun. Kim 4 2520 2013 10.1038/ncomms3520 Tensile testing of ultra-thin films on water surface

상세보기
Polym. Test. Lee 51 181 2016 10.1016/j.polymertesting.2016.03.014 Contact-free thermal expansion measurement of very soft elastomers using digital image correlation

상세보기
Nat. Commun. Lopez-Haro 5 5229 2014 10.1038/ncomms6229 Three-dimensional analysis of Nafion layers in fuel cell electrodes

상세보기
ECS Transac. Huang 16 2 1987 2008 10.1149/1.2982039 The mechanical changes in the MEA of PEM fuel cells due to load cycling

상세보기
J. Electrochem. Soc. Iden 158 8 B987 2011 10.1149/1.3598141 Relationship among microstructure, ionomer property and proton transport in pseudo catalyst layers

상세보기
J. Electrochem. Soc. Li 159 2 B173 2011 10.1149/2.065202jes Experimental measurement of stress and strain in nafion membrane during hydration cycles

상세보기
J. Phys. Chem. B Satterfield 112 12 3693 2008 10.1021/jp7103243 Non-Fickian water vapor sorption dynamics by Nafion membranes

상세보기
J. Polym. Sci. B Polym. Phys. Bauer 43 7 786 2005 10.1002/polb.20367 Influence of temperature and humidity on the mechanical properties of Nafion® 117 polymer electrolyte membrane

상세보기
J. Mater. Sci. Zhang 42 10 3408 2007 10.1007/s10853-007-1688-5 Carbon based conductive polymer composites

상세보기
Electrochim. Acta Secanell 52 22 6318 2007 10.1016/j.electacta.2007.04.028 Multi-variable optimization of PEMFC cathodes using an agglomerate model

상세보기

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[해외논문] Intrinsic swelling behavior of free-standing nanoporous ionomer-bound carbon films 원문보기

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[해외논문] Intrinsic swelling behavior of free-standing nanoporous ionomer-bound carbon films 원문보기

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