ReflexFunds
Active Member
This is Edward Niedermeyer. Possibly the longest serving TSLAQ veteran and FUD publisher.
He doesn't have any expertise or understanding of battery technology, EV technology or just innovation generally.
Prismatic/pouch cells are most often used for R&D purposes, but this does not mean it is impossible for the chemistry to work in a cylindrical cell.
Yes, building new cell lines will be capital intensive (but we are yet to know how much capex saving Tesla has achieved with its in-house new cell manufacturing designs). But replacing 80 million annual ICE sales is capital intensive and Tesla have strong cash flow and are committed to it.
It's worth noting that while Tesla and Dahn did not invent single crystal (micrometer size scale) NMC 532 cathodes, Dahn's group has been very focussed on researching their properties for several years now. Dahn has published many papers on how to optimise cell properties to get the most from the advantages of the single crystal cathode structure. The key results of Dahn's research are that 1) Single crystal cathode structure can be superior, 2) Ti-based surface coating on the cathode can be helpful - IF 3), they are combined with carefully chosen electrolyte additives.
Dahn and Tesla filed their first patent on choosing electrolyte additives for single crystal NMC532 cells back in July 2017. US20190036171 NOVEL BATTERY SYSTEMS BASED ON TWO-ADDITIVE ELECTROLYTE SYSTEMS
This is not new research for Tesla, they have been on the right track for over two years now and I'm sure behind the scenes they have been working towards commercialisation of this technology. In particular, the biggest obstacle to commercialisation could be affordably manufacturing single crystal NMC or NCA cathode (and ideally for a cylindrical cell format).
I think single crystal cathodes will be most dependent on the cathode powder manufacturing process used (Panasonic/Tesla's cathode powder is largely supplied by Sumitomo), but I would guess the electrode manufacturing process (currently done by Panasonic at GF1) also plays an important role in the formation of a single crystal structure.
I would guess Maxwell's dry electrode manufacturing technology may be helpful here and may be part of the rational for the acquisition (together with the cost reductions of Maxwell's process), but hopefully Tesla has also been working on an in-house cathode powder manufacturing process, or has been partnering with someone like Sumitomo, Umicore or NanoOne on R&D.
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