It appears that there is some interesting work going on with LiIon Iron Phosphate. There is no breakdown or oxygen liberation until the material hits 800 degrees Celcius. The main advantage is a resistance to thermal runaway even under high discharge rates. It can be used in wound cylindrical, wound prismatic and polymer batteries. I haven't heard anything about power density, but I'll keep my ears open. This could be a significant improvement in safety in our applications. Have you heard anything about this yet Red?
Jim Beck