Also the per-kilogram energy storage is far less important given the price difference between iron and lithium. There's a huge market for stationary battery storage where weight and even (to a lesser extent) size are non-factors compared with cost per kWh.
Lithium batteries are a fire hazard, though, even if we learn to produce them 10x as cheap in the future. Iron batteries are most likely not.
They seem to have >5000 complete battery cycles. I think that's the best one can get for stationary applications.
Ah, it sounds like they went quiet while setting up manufacturing facilities in Thailand and have recently started marketing again: https://redflow.com/redflow-on-growth-trajectory-after-emerg...
Excuse my ignorance, so what is this Iron-Ion battery good at even if we discount Per Kilogram Storage? Iron / Lithium isn't even the 10% of Battery BOM cost. Am I missing something here?
"By 2025, the market for mined lithium raw material may be worth $20 billion, compared with $43 billion for refined products and $424 billion for battery cells" in https://www.bloomberg.com/news/articles/2019-07-28/the-lithi...
Curious to see how that gets reconciled.
Of course, chemistry being what it is, it's not that straightforward. Here's a chart of atomic mass and specific gravity against atomic number: http://mrtitanium.com/images/density.gif?lbisphpreq=1
If you look for elements with a high ratio of density to atomic weight, you'll find most of the elements that we typically use in batteries (eg. Lithium, Magnesium, Aluminium, Manganese, Iron, Nickel, Cobalt, Silver).
Edit: Changed 'atomic number' to 'atomic weight' in the last paragraph.
I think an issue with alkali ion batteries is you need zeolite electrodes which adds bulk weight. Thus doing a number on your energy to weight ratio.
Hope they can improve the charging cycles. Anyone has a clue what the numbers on the matured Lithium-Ion tech is for comparison?
Anyone knows of any such slack/discord/Facebook/whatsapp group, then please let me know.
At the time I found journal articles and conference proceedings were the best resource to keep up with current state of the art.
A few journals I can recommend from memory:
"Journal of Power Sources"
Otherwise academics are usually good source you can try emailing professors and/or grad students from local university, they may be willing to give you some pointers.
Each new chemistry discovered is another opportunity to evolve to become the next battery technology base, or to service a specific market (consumer or otherwise).
Every battery tech when invented has multiple downsides (e.g. 150 cycles) that then require multiple new innovations to evolve to be competitive.