ADVANCED HIGH CAPACITY BATTERY FOR AIRCREW SURVIVAL TRANSCEIVERS

摘要

A number of lithium-organic electrolyte electrochemical systems have been tested for feasibility in meeting requirements for aircrew survival communications equipment. These include: Li/LiAsF6 in tetrahydrofuran (THF)/Ag3PO4, Li/LiAsF6 in methylformate (MF)/Ag2CrO4, Li/LiAsF6 in gamma-butyrolactone (BL)/CFx, Li/LiAsF6 in 95% MF, 5% BL/CFx, Li/LiAsF6 in 95% MF, 5% PC/CFx (PC = propylene carbonate). Above systems were subjected to either a 165F or a 140F one week stand test and low temperature discharge tests at -20F and 40F. Discharge regime was 170 ma. for 30 minutes, followed by 50 ma. for 30 minutes to 1.80 v. cutoff. Only systems capable of withstanding above stand conditions and meeting contract goal of 8 Whr/cu in at room temperature are: (1) Li/2.0 molar LiAsF6 in 95% MF, 5% PC/CFx (2) Li/2.0 molar LiAsF6 in MF/CFx System (1) appears to be the more capable of the two.