Dual-alloy Titanium Aluminide for Turboshaft Engines

The Army has implemented multiple programs to develop and field rechargeable alternatives to currently used primary batteries. These programs are motivated by the need to reduce peacetime (MOOTW, military operations other than war) battery costs. While theperformance characteristics of Army rechargeable batteries approaches the state-of-the-art relative to available battery technologies, battery capacity, shelf life and high temperature stability are significantly less than primary battery alternatives. Toimprove rechargeable cell chemistry to more closely meet the Army's needs, Yardney Technical Products, Inc. proposes a Phase II SBIR program to develop and demonstrate novel negative electrode materials for Li-ion batteries. In particular, the program willbuild upon past success with tin based anode materials and focus on materials that have the potential to enable the development of rechargeable batteries with significantly improved energy density, shelf life and high temperature stability. Anticipatedbenefits to the Government include longer life rechargeable batteries, facilitating reduction in Army battery costs. Further, a unique rechargeable cell chemistry that offers performance superior to currently available technologies will reduce productioncosts and enable the establishment of new business opportunities for battery manufacturers.