Lithium-Air / Lithium-Ion Hybrid Battery for Military Use

Period of Performance: 09/27/2007 - 09/30/2010


Phase 2 SBIR

Recipient Firm

Yardney Technical Products, Inc.
2000 South County Trail
East Greenwich, RI 02818
Principal Investigator


This Small Business Innovation Research Phase II project will advance a high energy and high power hybrid battery to power the dismounted soldier s electronics suite, and unattended sensors. One of the challenges of incorporating metal-air batteries into existing equipment is the power requirements. Metal-air systems are typically very high in energy density but low in power. A method to overcome the power issue to is to use a hybrid battery composed of the metal-air battery with another battery capable of high power discharges. The effort will be to construct and evaluate a high specific energy and high power lithium-air/ lithium-ion hybrid battery system. Specifically the project advances hybrid batteries by 1) integrating lithium-air and lithium-ion cells 2) applying our electronic hybrid configuration developed in phase one, and 3) evaluating the hybrid battery s performance and safety. Yardney will evaluate the hybrid s performance in various environmental conditions. Advantages of the proposed hybrid battery include a high energy density, high power, safe design, environmentally friendly components, and a high specific energy. This research will eventually lead to a hybrid system delivering a specific energy greater than 1000 Wh/kg.