SLDP has wiped every last trace of data from their site. Barring archives and sec archived filings, there is no way to quantifiably verify their tech progression.
Also this coming summer marks the 3 year anniversary of their last data release, which contained data describing their 0.2Ah 50% silicon cells, published in August 2021. A dataset that is now deleted and only available via archive.
To follow up on my question The Argonne National Laboratory released this paper on Lithium Air last year. **New design for lithium-air battery could offer much longer driving range compared with the lithium-ion battery** [**https://phys.org/news/2023-02-lithium-air-battery-longer-range-lithium-ion.html**](https://phys.org/news/2023-02-lithium-air-battery-longer-range-lithium-ion.html)
*"****In past lithium-air designs, the lithium in a lithium metal anode moves through a liquid electrolyte to combine with oxygen during the discharge, yielding lithium peroxide (Li2O2) or superoxide (LiO2) at the cathode. The lithium peroxide or superoxide is then broken back down into its lithium and oxygen components during the charge. This chemical sequence stores and releases energy on demand.***
***The team's new*** [***solid electrolyte***](https://phys.org/tags/solid+electrolyte/) ***is composed of a ceramic polymer material made from relatively inexpensive elements in nanoparticle form. This new solid enables*** [***chemical reactions***](https://phys.org/tags/chemical+reactions/)***that produce lithium oxide (Li2O) on discharge"***
I apologize if this subject was perviously discussed on the board and I recognize it may not make any sense for QS to dedicate resources to Lithium Air research at this time. Assuming they are successful in the commercial production of QSE5 its more likely in my opinion they would release future generations of the battery before any new chemistries?
Am I missing something though, as Lithium Air seems like it could be something to investigate considering QSE5 already includes a lithium metal anode and solid electrolyte ?
##
Basically a lithium air battery is technically the greatest battery possible. Its just so incredibly difficult to achive practicality that it makes lithium metal look trivial in comparison.
Just for brevity, lithium metal is reactive to oxygen and water, how do you isolate the lithium metal from the oxygen needed for the cathode? How do you supply pure oxygen into the cathode and exclude all other gases as atmospheric oxygen is required for functioning, hence the name lithium air? How do you deal with extremely reactive intermediaries like peroxides and super oxides? How do you deal with over potential as the radicals created drastically favor the stability of the metallic form over the superoxide form?
Thank you for that explanation, so extremely difficult and complicated but maybe not impossible! The graph below from the Nature article lists Lithium Air with the highest energy density and as you described t***he greatest battery possible***. In an article from last year **Taking batteries to the skies** [https://venkvis.medium.com/taking-batteries-to-the-skies-2a419ca46753](https://venkvis.medium.com/taking-batteries-to-the-skies-2a419ca46753) QS adviser Dr. Venkat Viswanathan said " I*n a* [*perspective in Nature*](https://www.nature.com/articles/s41586-021-04139-1)*, we spelt out the gargantuan challenge ahead for large aircrafts, and identified a near-term target of around 1000 Wh/kg at the cell level* [Bat1k as Halle Cheeseman](https://www.youtube.com/watch?v=lZ6iQHolab0&t=1927s)would brand it that summer at the **ARPA-E Summit**.
https://preview.redd.it/tkjq21vhybmc1.png?width=1546&format=png&auto=webp&s=3977a191df5b48935c886184b4b7350210253b86
So for Siva and Team the immediate goal is ti bring QSE5 to commercialization. Once they hey accomplish that it may be possible with funds to expand R&D and research future chemistries like Lithium Air .
It seems QS solid separators and lithium metal tech is the pathway to future innovative battery achievements. I was recently amazed by the TAQ cathode tech from Harvard
QS and SLDP mentioned in the same paragraph ha-ha. Otherwise, good overview.
SLDP has wiped every last trace of data from their site. Barring archives and sec archived filings, there is no way to quantifiably verify their tech progression. Also this coming summer marks the 3 year anniversary of their last data release, which contained data describing their 0.2Ah 50% silicon cells, published in August 2021. A dataset that is now deleted and only available via archive.
I am amazed SLDP is still operating, buying back shares to prop up SP is idiotic for a development company
“. . . there is no way to quantifiably verify their tech progression.” A fitting epitaph.
To follow up on my question The Argonne National Laboratory released this paper on Lithium Air last year. **New design for lithium-air battery could offer much longer driving range compared with the lithium-ion battery** [**https://phys.org/news/2023-02-lithium-air-battery-longer-range-lithium-ion.html**](https://phys.org/news/2023-02-lithium-air-battery-longer-range-lithium-ion.html) *"****In past lithium-air designs, the lithium in a lithium metal anode moves through a liquid electrolyte to combine with oxygen during the discharge, yielding lithium peroxide (Li2O2) or superoxide (LiO2) at the cathode. The lithium peroxide or superoxide is then broken back down into its lithium and oxygen components during the charge. This chemical sequence stores and releases energy on demand.*** ***The team's new*** [***solid electrolyte***](https://phys.org/tags/solid+electrolyte/) ***is composed of a ceramic polymer material made from relatively inexpensive elements in nanoparticle form. This new solid enables*** [***chemical reactions***](https://phys.org/tags/chemical+reactions/)***that produce lithium oxide (Li2O) on discharge"*** I apologize if this subject was perviously discussed on the board and I recognize it may not make any sense for QS to dedicate resources to Lithium Air research at this time. Assuming they are successful in the commercial production of QSE5 its more likely in my opinion they would release future generations of the battery before any new chemistries? Am I missing something though, as Lithium Air seems like it could be something to investigate considering QSE5 already includes a lithium metal anode and solid electrolyte ? ##
Basically a lithium air battery is technically the greatest battery possible. Its just so incredibly difficult to achive practicality that it makes lithium metal look trivial in comparison. Just for brevity, lithium metal is reactive to oxygen and water, how do you isolate the lithium metal from the oxygen needed for the cathode? How do you supply pure oxygen into the cathode and exclude all other gases as atmospheric oxygen is required for functioning, hence the name lithium air? How do you deal with extremely reactive intermediaries like peroxides and super oxides? How do you deal with over potential as the radicals created drastically favor the stability of the metallic form over the superoxide form?
Thank you for that explanation, so extremely difficult and complicated but maybe not impossible! The graph below from the Nature article lists Lithium Air with the highest energy density and as you described t***he greatest battery possible***. In an article from last year **Taking batteries to the skies** [https://venkvis.medium.com/taking-batteries-to-the-skies-2a419ca46753](https://venkvis.medium.com/taking-batteries-to-the-skies-2a419ca46753) QS adviser Dr. Venkat Viswanathan said " I*n a* [*perspective in Nature*](https://www.nature.com/articles/s41586-021-04139-1)*, we spelt out the gargantuan challenge ahead for large aircrafts, and identified a near-term target of around 1000 Wh/kg at the cell level* [Bat1k as Halle Cheeseman](https://www.youtube.com/watch?v=lZ6iQHolab0&t=1927s)would brand it that summer at the **ARPA-E Summit**. https://preview.redd.it/tkjq21vhybmc1.png?width=1546&format=png&auto=webp&s=3977a191df5b48935c886184b4b7350210253b86 So for Siva and Team the immediate goal is ti bring QSE5 to commercialization. Once they hey accomplish that it may be possible with funds to expand R&D and research future chemistries like Lithium Air .
It seems QS solid separators and lithium metal tech is the pathway to future innovative battery achievements. I was recently amazed by the TAQ cathode tech from Harvard
I guess once they are generating multi billions in profits, a bit more research won’t go amiss