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001048727 1001_ $$0P:(DE-Juel1)187071$$aBorowec, Julian$$b0$$ufzj
001048727 1112_ $$aEuropean Fuel Cell Forum 2025$$cLucerne$$d2025-07-01 - 2025-07-04$$gEFCF25$$wSwitzerland
001048727 245__ $$aNanomechanical and Nanoelectrical Analysis of Proton Exchange Membrane Electrolyzer Electrodes
001048727 260__ $$c2025
001048727 3367_ $$033$$2EndNote$$aConference Paper
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001048727 520__ $$aUnderstanding the aging process of proton exchange membrane electrolyzer cells(PEMECs) is crucial for improving their durability. To this end, a more than 5000 h operatedweb-woven reinforced membrane electrode assembly (MEA) was investigated usingnanoindentation and nanomechanical and nanoelectrical atomic force microscopy (AFM)techniques. Within this work, investigations on the MEA anode are presented,[1] and areextended by analysis of the MEA cathode for a more complete understanding of electrodeaging.The web-woven reinforcement fibers locally increase the nanomechanical properties andwere found to be a suitable reinforcement for long-term operation. Strikingly, a slightlydiminished electrically conductive surface area was observed above reinforcement fiberintersections highlighting a local fiber influence.While the cathode slightly hardened and heterogenized, the surface ionomer exhibited astable nature. To the contrary, significant anode aging was observed, especially at poroustransport layer (PTL) related marks. At these marks, an increased conductive surface areawas shown by AFM, and a hardness increase was shown by nanoindentation. These effectson the anode are attributed to a loss of electrically conductive and soft ionomer.This work enhances the understanding of electrode aging focusing on the impact ofreinforcement fibers and PTL.[1] Borowec, Julian, et al, J. Mater. Chem. A, 2025, 13, 6347-6356.
001048727 536__ $$0G:(DE-HGF)POF4-1231$$a1231 - Electrochemistry for Hydrogen (POF4-123)$$cPOF4-123$$fPOF IV$$x0
001048727 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x1
001048727 7001_ $$0P:(DE-Juel1)194729$$aRein, Lukas$$b1
001048727 7001_ $$0P:(DE-Juel1)184377$$aPoc, Jean-Pierre$$b2$$ufzj
001048727 7001_ $$0P:(DE-Juel1)196700$$aGorin, Nelli$$b3
001048727 7001_ $$0P:(DE-Juel1)180432$$aBasak, Shibabrata$$b4
001048727 7001_ $$0P:(DE-HGF)0$$aDobrenizki, Ladislaus$$b5
001048727 7001_ $$0P:(DE-HGF)0$$aSchmid, Günter$$b6
001048727 7001_ $$0P:(DE-Juel1)161579$$aJodat, Eva$$b7
001048727 7001_ $$0P:(DE-Juel1)191359$$aKarl, André$$b8
001048727 7001_ $$0P:(DE-Juel1)156123$$aEichel, Rüdiger-A.$$b9$$ufzj
001048727 7001_ $$0P:(DE-Juel1)167581$$aHausen, Florian$$b10$$ufzj
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001048727 9141_ $$y2025
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001048727 9201_ $$0I:(DE-Juel1)IET-1-20110218$$kIET-1$$lGrundlagen der Elektrochemie$$x0
001048727 9201_ $$0I:(DE-Juel1)IET-4-20191129$$kIET-4$$lElektrochemische Verfahrenstechnik$$x1
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