When the use of Li metal may be risky…
Conventional electrochemical wisdom holds that the use of Lithium metal is risky. Indeed, even Li-ion batteries suffer major safety concerns associated with the growth of spiky Lithium dendrites resulting in an internal short circuit, followed by uncontrolled energy release. A common belief is that any rechargeable Lithium metal system would, sooner or later, generate uncontrolled dendritic Lithium.
In contrast, OXIS technology is inherently safe!
OXIS’s cells are UN38.3 approved and are safe to be transported by air. OXIS Li-S cell technology is inherently safe due both to the use of high flash point electrolytes and the formation of a Lithium sulfide layer on the lithium metal anode surface. The high flashpoint electrolyte increases the minimum temperature at which thermal runaway can occur and therefore results in OXIS’s cell having a high degree of thermal stability and good performance in several safety tests. The lithium sulfide layer passivates the lithium metal anode surface vastly reducing its reactivity, making the OXIS technology resilient to the most severe destructive tests such as the nail penetration test.