The articles I've read say that as they tweak things, the cost to 'recharge' via an electrolyte flush is approaching the cost of a typical ICE tank fill up. It's going to be awhile before they work the kinks out, and then, you need infrastructure. Today's gas stations are already up on storing and supplying liquids. They'd also need to have a quick and easy 'dump' site for the electrolyte. From what I've read so far, yes, you can recycle the stuff, it isn't a one-time use. I don't know if you would have the same capability to recharge at home, but it seems like that may be part of the scheme...by precharging the electrolyte, you gain all of the benefits of an ICE with a tank refill in speed, though, which is a big deal if you're going to go longer distance. Bigger batteries, regardless of the power available, means longer times to recharge. While there are prototype 350Kw CCS units being tested, it takes a HUGE energy storage or similarly huge power line to handle that peak power...swapping charged electrolyte offloads that huge peak load into a production line type environment. Something that could more easily be done during off-peak power loading and cheaper costs. Even one of those fast CCS units won't get you to 100%...it must slow down to complete the top off. Flushing all of the old electrolyte out and replacing it with new means 100% charge once the thing is topped off at the pump...just like an ICE...you're good to go max distance. There should be no degradation. The electrodes are said to be replaceable whenever (some have said 30K mile intervals), but that will likely change as things evolve.
They're working on increasing energy density and probably other things while also bringing the price down and reliability up. The concept for this type of battery has been around for a fairly long time, but making it economically feasible for mass production as a commodity has only started to become a focus fairly recently. In theory, periodically replacing the electrodes and flushing the electrolyte should also mean NO battery degradation at all.
2011 535i x-drive GT, 2014 i3 BEV