Advanced Li ion battery with improved cycling stability

ABSTRACT:State of art Li ion batteries are not able to meet the energy density and charge-discharge cycling stability requirements for the satellite applications for DoD. The primary problems are the structural instability and the low electronic conductivity of the Li rich transition metal oxide based cathode materials during the charge-discharge cycling operation. Specifically, during the charge-discharge cycling, the mobility and dissolution of the transition metals and loss of oxygen leads to phase transition within the cathode materials to structures with lower capacity. Lynntech proposes an advanced Li ion cathode material that will address the structural instability issue and improve electronic conductivity for achieving high rate capabilities (charge-discharge at > 1 C rate). The Phase I project will demonstrate the feasibility of Lynntechs advanced cathode materials for achieving the energy density and cycling stability requirements for the satellite application in laboratory scale cells. During the Phase II project, Lynntech will scale up the synthesis of the cathode materials, optimize the performance and demonstrate the operation of prototype cells to meet the DoD requirements.BENEFIT:The proposed lithium ion batteries with high energy density and improved cycling stability will find applications in both commercial and military markets. Apart from the desired satellite applications, other military applications will include soldier power, communication systems, weapons systems, remote sensors, detection devices, and unmanned aerial vehicles (UAVs). Specific benefits for DOD include extended duration missions and improved capabilities. Private sector applications include electric and plug in hybrid electric vehicles, auxiliary power units, and consumer electronic devices.