Thermal batteries are single discharge reserve batteries that provide very long shelf life, minimal self-discharge, wide storage temperature range, fast activation under sudden power demand, and also wide range of temperature operating conditions. Such unique properties among electrochemical power systems are provided with application of molten salt electrolyte, which is in solid form under normal storage conditions. Upon activation, thermal batteries are heated with an internal pyrotechnic heat charge above melting temperature of the molten salt electrolyte. This allows for fast ion mobility and facilitates charge transfer reaction. Due to the unique properties, thermal batteries are primarily used in DoD applications, specifically in munitions and weapon systems. Modern applications and their latest development call for high performance advanced thermal batteries. We are proposing development, demonstration, and characterization of a long-activated life, safe, and cost efficient thermal battery. The proposed solution addresses significant market segment of submarine-launched ballistic missiles and other munitions of projected fast market growth. Along with the proposed development in Phase I and Phase II, we will aim for fully functional prototypes and field tries. The technology will be actively marketed to DoD agencies.
Benefit: The proposed development, characterization, and validation of a long-activated life reserve thermal battery will allow for advanced performance and application in systems, which are not addressable with conventional reserve thermal batteries. The proposed technology offers multiple improvements in comparison with the current state of the art thermal battery technology, namely long-activated life and increased safety. In Phase I, novel materials and technology will be developed, characterized, optimized and demonstrated with laboratory single cells as well as with multiple cells stacks. With the proven performance, our technology aims to address and improve current munitions including refurbished D5 Trident submarine-launched ballistic missiles, and other DoD applications, and allow for development and field applications of new devices. In summary, we are proposing a significant advancement of the reserve thermal batteries technology, which will allow for fast commercialization and rapid market penetration.
Keywords: Thermal Battery, Thermal Battery, Cathode, energy storage, Electrolyte, long-activated life, Anode, Safety, discharge power
