Navitas Advanced Solutions Group, LLC — National Aeronautics and Space Administration SBIR Phase I: Z1

Description

Navitas proposes a Phase I program to develop and demonstrate a long cycle life cathode for lithium sulfur batteries.nbsp; The cathode is based on a novel engineered pore structure host material that will deliver advanced performance through the following features: (1) Hierarchical pore structure with pore volume to accommodate high sulfur/polysulfide loading; (2) Electronic conductivity to enable high utilization of sulfur; and (3) High affinity to both sulfur and polysulfides to minimize sulfur dissolution.nbsp; Phase I will demonstrate a lithium-sulfur cell with a cathode design able to reach gt;500 cycles with projected specific energy gt;400 Wh/kg.nbsp; Phase II will develop gt;6Ah prismatic pouch cells to TRL 6 with gt;1000 cycle life (80% capacity) and demonstrated specific energy gt;400 Wh/g.nbsp; If successful, the proposed technology will at least double the cycle life of lithium sulfur batteries and advance beyond state of the art (lt;200 cycles) to address the key limitation for space applications.nbsp;