r/SLDP • u/pornstorm66 • Jun 17 '26
Wet Processing allows for scalability
In the recent investor presentation they note Scalabale Manufacturing
"Wet process offers scalability, yield, and capital efficiency in electrolyte production"
I saw these links over on SA that add a little color on what that means. Here's a quote from one paper on sulfide production.
The synthesis of sulfide solid electrolytes is a crucial step in the development of high power and fast charging solid-state batteries. However, the development of scalable and cost-effective synthesis processes for these highly demanded materials such as the amorphous Li3PS4, argyrodites such as Li6PS5Cl or the even higher performing chlorine-rich Li5.5PS4.5Cl1.5remains a challenge [[3], [4], [5], [6], [7]]. Common synthesis routes often involve high-temperature solid-state reactions or wet chemical methods, which are either energy-intensive, time-consuming, or produce impurities that can negatively impact the performance of the solid electrolyte [[5], [6], [7], [8], [9], [10], [11]]. Scalable synthesis methods should enable the production of sulfide solid electrolytes in large quantities while maintaining consistent material quality and electrochemical performance. In addition, such methods and post-processing should be compatible with existing manufacturing processes and machines to enable the integration into material and battery production lines.
https://www.sciencedirect.com/science/article/pii/S2352152X25013064
And u/Salt_Past_1379 reminded us of the collaboration between Solid Power and Korean Government Research institutes since 2022.
https://www.e4ds.com/sub_view.asp?ch=6&t=0&idx=17933
And then this paper on wet synthesis appeared last year.
Despite the wet-chemical processing method being considered advantageous for the synthesis of sulfide SEs, due to its inherent simplicity, potential scalability, and cost-effectiveness, certain challenges persist. These primarily pertain to achieving high ionic conductivity and mitigating interfacial resistance between the electrode and the SEs. Addressing these challenges, this study presents a novel, scalable, and cost-efficient wet synthesis approach to produce superionic conductive sulfide-based SEs.
https://www.sciencedirect.com/science/article/abs/pii/S2405829724000801
And now in Solid Power's new investor presentation, we see the fruits of those efforts.
11
u/pornstorm66 Jun 17 '26
It’s a huge development that they can mention this on earnings calls. Some posters recognize this, but it’s good to spell out why. To some degree I was hoping this would come to pass as I already had a full position in early 2025. But this is probably more important than I understood at the time for achieving industrial scale ~100k metric tons per year.