Battery Optimized for Long Term Storage and Intermittent Use

The Army has a need for a power source enclosed in a box for monitoring the health of munitions in storage for extended periods of time of 10 or more years unattended while delivering power intermittently over that storage period with enough power tomonitor the munition health at army-required extreme ambient storage conditions. A trade study in Phase I identified some potential chemistries suitable for such a power source. In Phase II, Lithium Power Technologies will perform research and developmenton the proposed primary and secondary low voltage solid-state lithium batteries incorporating very high capacity cathodes such as CFx and polyorganosulfides in tandem with a room temperature polymer electrolyte that yields energy densities between 250 to400 Wh/kg, a shelf-life of about 20 years, excellent reliability, and at a cost per unit of energy below present cost. Lithium Power's approach exploits low-cost and lightweight metallized plastic film substrates and the development of ultra-thinelectrode/electrolyte structures. Successful implementation of a room temperature, chemically, electrochemically and thermally stable, conductive solid-polymer electrolyte with low voltage, high capacity cathodes for lithium-based solid-state, thin film,flexible batteries should pave the way for the development of higher energy density and lighter power source for Army's missile applications. The results of this work will enable us to determine the feasibility of lithium batteries using a dry polymerelectrolyte for consumer electronics, which may open up numerous other applications.