Power Japan Plus also announced a new type of battery which is claimed to be suitable for cars, charges 20x faster than LiIon, has comparable energy density, ~ 3000 charge - discharge cycles, and will be produced this year in the standard 18650 format (but only for special applications like medical & satellites for now).
I couldn't find any capacity / discharge curves though.
This is a something of an indirect source, because I can't find the primary source for Axion's PbC cycle capability. But the PbC is far better than Power Japan Plus's.
"PbC lead/carbon chemistry creates a much longer lifespan (3 to 4 times), much greater charge acceptance in partial state of charge applications (10 to 20 times more depending on the "state" of the battery)."
Thus, Axion's PbC could have 8k cycles of complete charge/discharge, and orders of magnitude greater for partial discharges (which is how it would actually be used).
I have read it's over 100k cycles but I need to find the source.
"Our test protocol requires a complete charge-discharge cycle every 7 hours to a 100% depth of discharge. During testing, our laboratory prototypes have withstood more than 2,500 cycles before failure. In comparison, most lead-acid batteries designed for deep discharge applications can only survive 400 to 600 cycles under these operating conditions."
The interesting part about their batteries isn't the lifespan, it's the lifespan under 100% depth of discharge. You can easily get around 2k cycles out of a flooded cell lead-acid battery, but you can only go down to 60% discharge and you must carefully monitor the battery chemistry to get prolonged lifespan. Along with it's high current capacity, this would make it an interesting battery for renewable energy storage more than anything else.
It's too bad they don't have a solid datasheet for their product yet. I'd like to see their figures for internal resistance, self discharge and performance over typical operating temperature ranges. Until we get to see this data, it's hard to say if this will be a profitable product.
I couldn't find any capacity / discharge curves though.
I read about it here: http://www.gizmag.com/dual-carbon-fast-charging-battery/3212...
With original source here: http://powerjapanplus.com/about/news.html