But context helps...

"Nickel-zinc alkaline is seen as a less fire-prone alternative to lithium-ion cells, which have been banned for some US military applications, according to NRL."

So they now have a battery that works with a few hundred cycles with density close to that of Li-Ion that won't explode. It may not replace Li-ion in your vape stick but still sounds like a win for the emergency lights in the armory of a battleship (for example).