I am working on a project (a disposible device) which requires significant power delivery from a small volume. This power delivery is very bursty, we're talking a handful of big pulses over the service life of the device. This is all super up in the air right now, but I am looking at around 0.35 mL of volume for the battery and I need to pump around 150 mW into a resistive load for a burst on the order of ten seconds (in order to heat something up). Primary cells are preferred for shelf life but secondary cells which can hold substantial charge for 2-3 years would be acceptable.
In order to bound the problem, I'd like to figure out what primary cell chemistry has the best volumetric power (not energy) density. Mass is not a concern. This would at least let me know what's physically possible, even if it's not neccessarily available off-the-shelf as a finished cell that fits exactly in my volume available.
I have started by taking a look at the comparison of commercial battery types article on Wikipedia. By dividing the volumetric energy density by the mass energy density of the battery, I can get the battery's density. From there, I can calculate the volumetric power density by multiplying by the specific power.
Unfortunately, Wikipedia's table isn't very complete, and is missing the specific power for a bunch of primary cell chemistries.
So, my question is: does anyone know what commercially-available primary cell chemistry has the highest volumetric power density? I am not adverse to paying NRE for a custom cell shape, but I need a battery chemistry which is used commercially, not something that's currently just a university research project.
PS: It also probably goes without saying, but molten-salt batteries, while technically a commercially available primary cell, are not practical for my application.