I noticed this a couple of days ago -- I hadn't seen it earlier. Meant to bring it up here, in the "funding someone to build a better battery" discussion, but the thread died, and I forgot :(
It was an interesting read, addressing some concerns about dendrite formation and other nickel-zinc problems. I'd be interested to hear why Th!nk didn't wind up using the batteries -- especially as this relates to the health of Evercel (the company). I thought this was the most interesting bit for the "Mad-men" (:)) among us: Typical NiZn batteries have a specific power of 280 W/kg... but ultra-high power NiZn batteries can be designed with minimal sacrifice in specific energy Looks like cell dry-out is a leading cause of death in these guys, which implies to me that Sheer's "boil the cells for a day" experience may substantially shorten the life of his modules. [C'mon MK3s :)] As for zinc migration -- I find it ironic that the life of the battery might be improved if only we could turn the dang thing over every couple hundred cycles or so.... :> I wish I could see Figures 29.8 and up.... :( Be interesting to hear what y'all think. -Dave
