28 June 2019 I n t e r n a t i o n a l F l o w B a t t e r y F o - PowerPoint PPT Presentation

Ya s u a k i Ta n i m u r a 1 , A l a n H a n d e r m a n n 2 1 - A d v a n c e d M a t e r i a l s R e s e a r c h L a b o r a t o r i e s , To r a y I n d u s t r i e s , I n c . , O t s u , S h i g a , J a p a n 2 - Z o l t e k C o r p o r a t i o n , S u b s i d i a r y o f To r a y , B r i d g e t o n , M O , U n i t e d S t a t e s 28 June 2019 I n t e r n a t i o n a l F l o w B a t t e r y F o r u m L y o n , F r a n c e 9 - 1 1 . J u l y 2 0 1 9 1

Zoltek Product Introduction I. I Redox Flow Battery Electrodes Features & Supply Chain II. Electrode Physical Properties III. Activated Cell Performance & Electrode Characterization IV. Summary V. 28 June 2019 2

ZOLTEK PX30 ZOLTEK PX35 ZO LT EK OX 99 % Carbon Content for Superior Strength Outperforms All Other Zoltek Quality Management Systems Extreme Heat & Harsh Environments. to Weight Performance. Organic Flame Resistant Fibers. are certified to the Standards of AS9100D and ISO 9001:2015. 28 June 2019 3

REDOX FLOW BATTERY ELECTRODE FEATURES 95% carbon content Good permeability Electrically conductive    Corrosion resistant Elasticity - compressibility Thermally stable    Optimized for best quality Customizable - activation High production capacity    28 June 2019 4

Electrode P rop er ty PXF B PXF B PXF T PXF T PXF T PXF T ( PAN ba sed CF ) P W03 S W 08 F T 50 F T 300 F T 450 F T 540 Woven Spunlace Needled Fabric or Felt Type SPUNLACE FELT 122 339 50 301 446 538 Areal Weight, g m -2 Thickness, mm 0.39 1.04 0.52 2.7 3.5 4.7 At 0.02 MPa compression Felt bulk density, g cm -3 0.32 0.33 0.096 0.11 0.13 0.12 Areal weight / thickness at 0.02 MPa compression NEEDLEPUNCH FELT Electrical resistivity, Ω mm 8.0 7.3 86 6.3 4.2 4.0 At 1 A current for 30x30 mm sample, 20% compression, thickness direction Open Porosity, % 82 82 95 94 93 94 w a Ccalculated as 1 - d∗ ρ c , w a felt areal weight, d felt WOVEN FABRIC thickness and ρ c is the fiber density (1.78 g cm -3 ) 28 June 2019 5

28 June 2019 6

28 June 2019 7

I. II. III. T h a n k y o u f o r y o u r a t t e n t i o n 28 June 2019 8

28 June 2019 9