A THIN-PLATE BATTERY. SUPPLEMENT TO THINFILM MONOTRONICS.
Final rept., suppl., 12 Mar 64-12 Mar 65,
MELPAR INC FALLS CHURCH VA
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Data obtained thus far point to the feasibility of producing a high power output liquid ammonia-activated battery. Experimental results show the capability of the system to operate at both high and low current densities and through a wide range of temperatures. In addition it has been demonstrated to a reasonable extent that the data generated in small units can be gainfully extrapolated to the construction of larger units capable of producing power outputs up to 75 watts. There remain however, some materials and engineering problems yet to be solved before a practical high power output unit can be produced. Specifically, there exists a need for a battery plate compartment liner material that is chemically resistant and easy to handle. Also, a reservoir compartment liner compatible with the electrolytic solution over long periods of storage is needed. Another engineering difficulty is designing a lightweight case capable of containing internal pressures generated during battery discharge. Any increase in pressure over the equilibrium vapor pressure of the electrolytic solution or the drive gas pressure necessitates a case structure of unreasonable size and weight. Though internal structural supports minimize battery case size and do not adversely affect the battery performance while permitting the use of thin chamber end plates, they do complicate the battery fabrication procedures. Author