Read more.Quote:
Sodium is much cheaper and more earth abundant than Lithium.
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Read more.Quote:
Sodium is much cheaper and more earth abundant than Lithium.
Huzzah, yet another promising battery breakthrough we won't see for another 15 years, if ever.
Another one for the list.
Another one to disappear into the ether with suspicious circumstances like paper batteries and similar
Seems very experimental with no idea of retail product.
Rhetorical questions:
Wh/kg? Wh/cm^3? Charge efficiency? Useful charges for # life? Capacity after 1000 charges? Retail or manufacture cost $/Wh? Operating and storage temperature range? What happens if battery is broken or spiked with metal? How much trouble to recycle?
The inventors don't say and nobody knows? Till then, I don't care.
The energy density is determined largely by the chemistry, and a quick search using the search engine of your choice will show that it is similar to lithium-iron phosphate.Quote:
Originally Posted by tygrus
The advantages include the plentiful supply of sodium and the fact that it can be discharged to less that 30% capacity without damage.
The disadvantages are problems over the number of charge cycle, caused by problems with the chemistry at the ion exchange at the cathode - a problem that this research claims to have overcome.
While I can’t answer your rhtorical questions accurately, while sodium as an alkali metal is reactive, it is less reactive than lithium, and So the dangers of a sodium cell being punctured would be no worse than that of a lithium cell.
So this may be a significant breakthrough on the path to a new generation of secondary cell, which may use already established manufacturing techniques for cells using alkali metals.