I suspect it’s a lot further from wide scale use than some are imagining.
I dont’ see anyone saying it’s just about ready to roll out… I think you maybe are thinking that because you feel the need to be cynical. Perhaps you enjoy it 🙂
We’ve just posted because it’s an interesting technology that’s all. I’m sure none of these posters, the article author, or the scientists think it’s the messiah in brown liquid form.
Here’s their abstract:
http://pubs.rsc.org/en/content/articlelanding/2013/EE/C3EE00072A
They got 190Wh per litre which means that something the size of a hot water tank could hold in the region of 20kWh. A typical house might use 10kWh per day. So if you could fill it up during the day, it could easily be enough to see you through the evening and night.
A big if, of course. It looks like an averave domestic PV installation would generate roughly 5kWh per day averaged out. That’s not going to power your whole house but the key point is that you could easily store domestic PV output from the day to use locally in the evening, which solves a key problem with solar afaik.
Why is it special? What’s different to current batteries?
It’s because it’s a liquid. Normal batteries have to be very carefully and intensively made, because you have one or two solid materials that need to be manufactured in such a way to maximise their contact with each other in some kind of matrix. This is quite hard – recent advances in improving normal li-ion technology are all about the material that stores the energy generating stuff and improving how well they are in contact. And degradation in those materials is what causes the battery to eventually die, afaik.
Because this is a liquid, you can just pour it into a tank. Bigger tank = more capacity, without any additional complex manufacturing.