RE:RE:RE:RE:NEWS!!!! PUREVAP - NEW PATENTI looked back at the news release from MGX mineral and UBC this spring
https://www.bloomberg.com/press-releases/2020-04-02/mgx-minerals-announces-completion-of-1-000-cycle-long-term-stability-assessment-of-silicon-anode-for-next-generation-l
Their announced capacity was announced '
as reversible capacity of 607.5 mAh g^-1' While the capacity of a traditional Graphite anode is '372 mAh g^-1'
While HPQ patent application NR states
'1,200 mAh/g ' .. Which represents twice what MGX/UBC were able to produce.
The interesting comment in MGX/UBC press release is as follows:
'
The MGX/UBC partnership is developing a highly efficient, long-lasting silicon anode that will aide in the development of next generation lithium-ion batteries capable of increasing energy density from the current standard of ~ 200 Wh/kg up to 400 Wh/kg for use in long-range electric vehicles and grid-scale energy storage' Hit me if I am wrong but there seem to be a direct and close relationship between Watts Hours per Kg of battery and the capacity and the energy a battery will be able to deliver. It would suggest, solely on the numbers reported in HPQ patent application... That a 800 Wh/kg may be practical using their patented process
Louis1000000 wrote: Totally agree that there are many different components at play in a battery. Yet! because of the atomic composition of lithium and Silicon and the number of electrons that can be exchanged during the charging and discharging cycles.... The theoretical increase in capacity is by a factor of 10. To have achieved an increase in capacity of 3 to 4 at this early juncture is still pretty incredible.
Pitpitcolisse wrote: Hi Louis,
That's what I tought first but there are other limitation, mainly on the cathode side, that would come into play and limit the Silicon gains possible to about 30% in battery cells.
30% is still a huge (!!) step in battery density and there would also be a good gain in charge/discharge rates, so faster charges and more power to the drivetrain when needed.
Cheers
Louis1000000 wrote: Wow!!! Great news. 3-4 times the capacity of a traditional Graphite is Huge. It means that a tesla battery using HPQ NanoPowder could have an autonomy of 1,200 - 1,600 Miles per charge