Monkey, thank you very much for this! Interesting. Most things are known so far, however, some new bits as well:
Cathode additives increase energy density:
We know already that Talga develops additives, like additives for the cathode that increase the conductivity. That primarily reduces the internal resistance of the battery cell, leading to less internal heating, less energy loss and better charging performance as more of the cathode can be charged in parallel. What is new however is that this also increases the energy density because less additive from Talga is needed compared to carbon black that was used before, hence leaving more room for the active cathode material.
Talnode-Si:
The description given here is new for Talnode-Si. We knew that they produced meso-particles, they describe that as particles composed of smaller particles, the thumbnail image shows such a particle:
What is new, I think Talga has changed the structure of these particles. What looked before like a randomly mixed ball of particles is now described as silicon particles like raisins in a graphite dough surrounded by a graphene outer shell. This might be able to keep the meso-particle together when the silicon swells while at the same time shielding the inside of the particle from contact with the electrolyte. That is important because at the contact surface of the anode with the electrolyte, the lithium forms a chemical bond with the electrolyte called the SEI layer. When silicon particles swell, that layer gets broken apart and forms new, reducing the active lithium content inside the battery cell over time. Also the silicon particles, when too large, start to break apart to smaller pieces increasing their surface area, again increasing the area where the SEI layer can form, costing more lithium. This is the primary reason for silicon anodes to have a short life time. If Talga can solve that with these meso-particles, they would be one of the only ones on earth that can do that. And the silicon raw materials are are super common, not as limited as graphite. Interesting development.