Comment by p1mrx

If this is true, it's possible that the technology is from Nordic Nano. That would at least explain how a motor/software company could pull a battery out of thin air:

https://www.donutlab.com/nordic-nano-investment/

Their chief scientist is working on solar-powered hydrogen production, which seems fairly unrelated to solid state batteries:

https://www.nordicnano.co/chief-scientist-bela-bhuskute-will...

Though TiO2 nanoparticles appear to be relevant to battery research in general:

https://pubs.acs.org/doi/10.1021/acsaem.3c02304