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ProJect element • •• 4.0 - Support1ng Technology Contractor. . . Ion1cs, Inc. 64 Grove Street Watertown, Mass. 02172 T1tle••••••.••.•.•.•• DevelopmentandPreparationofRedox Cell Anion Exchange Membranes Princ1pal 1nvestigator • . Contract number • • • • • Per10d of performance Work locat1on .•• Contracting off1ce.• Cumulative fund1ng (through fiscal year 1980; re1mbursable only) Russell B. Hodgdon DEN3-204 11/12/80 to 11/11/81 Watertown, Mass. NASA Lew1s Research Center $306 600 Background: ObJect1ves: Approach: Output: Membrane propert1es need to be improved 1n order to make multimegawatt Redox systems f e a s i b l e . Great advances have already been made since the membrane development program began 1n 1975. DEN3-204 work began 1n December 1980. To produce, for the NASA Redox energy storage system, an10n exchange membranes that meet goals of 1.5-o-cm2 area res1st1v1ty and 5-~g Fe/h/cm2/M/l1ter select1v1ty. To prov1de a supply of scaled-up membranes 1n large quant1tles. Vary properties of membranes by chang1ng bas1c parameters of membrane chemlstry, polymer1zat1on catalyst, fabric back th1ckness, lon conduct1v1ty, and pore Slze. F1nal report to be publlshed in January 1982. Prelim1nary development of new th1nner fabr1c back1ngs resulted in lowered area res1st1v1ty 1n 1 MFe. Cell output wlth th1S membrane 1S 49 A/ft2 at 0.9 V at 50 percent depth of d1scharge. 33PDF Image | NASA Redox Storage System Development Project 1980
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