from chemistry to pack
Every solid-state battery announcement over the past year or so has come with a headline charge time: 15 minutes, 12 minutes, sometimes under 10. Feels like a limbo dance at a bar, getting lower and lower as we all get drunk on the lemonade. Lined up next to each other the claims look almost interchangeable, … Read more
2026 OEM Claims vs. Actual Dates Every major automaker and cell maker working on solid-state batteries has, at some point, put a year on when a real customer will be able to buy a car with one inside. Those years keep moving. This post lines up the current public claims from five of the most … Read more
Every solid-state chemistry roundup mentions that cells need “stack pressure,” usually as a single line in a spec table. What that line means for the person actually designing the pack around the cell: This gets skipped almost everywhere. This is the pack-design follow-on to our cell-level piece on What’s the right stack pressure?, which covers … Read more
Energy density gets the headlines, but the reason solid-state cells are still confined to pilot lines and demonstrator vehicles has as much to do with the factory as the chemistry. Building a gigafactory for a solid-state cell is not simply “the same lithium-ion line with a different electrolyte fill step”. Several of the core unit … Read more
Lithium dendrites growing through a solid electrolyte do not behave like the diffuse, roughly uniform plating seen at a liquid electrolyte interface. In a polycrystalline ceramic or a cold-pressed sulfide pellet, the microstructure itself dictates where lithium goes: dendrites overwhelmingly nucleate and propagate along grain boundaries rather than through the bulk of individual grains, even … Read more
Author Dr. Simon Madgwick of Nuvvon Inc. Nuvvon recently showed their solid state 5Ah SiC NMC cell cycling continuously at 3C/5C for 1000 cycles full DOD to 90% SOC. Then incredible sub-zero temperature performance discharging down to -50°C with over 50% capacity and charging at -40°C. Here is the final post on these 5Ah Silicon cells – comparing … Read more
Author Dr. Simon Madgwick of Nuvvon Inc. Since the Nuvvon post unveiling Solid State Silicon Anodes (1Ah Silicon NMC), the cells have been scaled up and further differentiated into 250Wh/kg Power cells versus 400Wh/kg Energy cells. Here is the Power cell with continuous 3C Charge / 5C Discharge full DOD – at point of posting 1014 cycles … Read more
Author Dr. Simon Madgwick of Nuvvon Inc. In yet another breakthrough Nuvvon has used its Solid Polymer Electrolyte (SPE) to combine a high silicon anode with a high nickel cathode. See below data set for 1Ah 40% silicon graphite vs NMC 811. Crucially, the SPE is able to accommodate traditional expansion issues associated with high silicon, without … Read more
If you want the best results in the laboratory it is really useful to learn from the experts: Solid state battery testing mould cleaning tips. Author: Anita Liu The Problem: Solid-state battery moulds are extremely sensitive to leftover powder, water stains, or surface scratches. Any of these can lead to poor electrode contact, low densification, … Read more
Nuvvon pushes True Solid State boundaries … again Author Dr. Simon Madgwick of Nuvvon Inc. Recently Nuvvon shared 1Ah pouch cell specs for Gr-NMC811 and Li-NMC9 plus the related safety test data (nail and ARC). Here is complete cycle data for the Gr-NMC811 cells (it takes a while to get 900 cycles … and counting) and the … Read more