Voltage is 1.2. I couldn't understand the claims about charge cycle (I think the tests were of 100s of charges, but the discharge rate was variable). Discharge rates were up to 200D, but no explicit mention of internal resistance.
I think this was more of a 'we tried the thing' paper to justify whatever funding they had and now it'll all be hush hush until they think they have a product.
It's being commercialized by the same people that did ambri which looked like a very promising technology at the time with one hard materials problem then they went dark.