用于氧化还原液流电池的生物基膜.pdf

1、www.tugraz.atBiobased Membranes for Redox-Flow BatteriesL.Pachernegg-Maira,b,A.Scheera,J.Zodera,D.Wickenhausera,b,J.Selingera,J.Linsd,T.Gutmannd,M.Damme,R.Kalbe,U.Hirnaand S.Spirka,baInstitute of Biobased Products and Paper Technology,University of Technology Graz,AustriabEcolyte GmbH,Graz,AustriadE

2、duard-Zintl-Institute for Inorganic and Physical Chemistry,Technical University Darmstadt,Germany eproionic GmbH,Graz,AustriaIFBF,June 2025www.tugraz.atWhat is our Approach?2Low cost support materialIon conductive materialComposite material Polyethylene Polypropylene Polystyrene Paper Perfluoroalkyl

3、sulfonic acid(PFAS)Sulfonated poly(ether ether ketone)Poly(ionic liquids)www.tugraz.atPaper Substrate3100 m100 mCT image Cryo-fracture SEM imageSurface SEM*image100 m*Scanning electron microscopywww.tugraz.atConductive Polymer42 mCryo-fracture image of single fiberCryo-fracture image of paper surfac

4、ePoly(ionic liquid)Spirk et al.,Patent EP4296299A15 mwww.tugraz.atInverse Gas Chromatography(IGC)and SEM5Sygusch,J.et al.J.Chromatogr.A 2024,1714,464526.Fiber coverage of 15%(inner and outer surface)Measured by acetonitrile adsorptionwww.tugraz.atABCPFAS-typeBattery Test6Gerken et al.Adv.Energy Mate

5、r.2020,10(20).pBQS vs AQDS in 1M H2SO4(10 mM);50 ml/min;10-15 min/cycle Phase A:Run-in of the battery(swelling of fibers)0.16%per cycle Phase B:Stable operation 0.01%per cycle Phase C:Capacity fading 0.08%per cyclewww.tugraz.atElectrochemical Impedance Spectroscopy(0.05 M Na2SO4)7Daz,J.C.et al.J.Mem

6、br.Sci.2021,618.Daz,J.C.et al.J.Membr.Sci.2023,669,121304.100 m100 mRaw PaperMembrane before usePristine paperMembranePFAS-typewww.tugraz.atDistribution of Relaxation Time8 Chris W.Braunschweiger-Eigenes Werk,CC BY-SA 4.0,https:/commons.wikimedia.org/w/index.php?curid=136341334www.tugraz.atDistribut