Sodium-Ion Battery Calendering and Porosity Control
Sodium-ion cells ask the calender to do something lithium-ion never asked of it. The hard carbon anode stores most of its sodium in pores rather than betwe…
Semi-Solid State Battery Dry Electrode Processing
Every solvent we remove from a factory is a problem we no longer have to solve. That is the honest argument for dry electrode processing, and on semi-solid…
Semi-Solid State Battery Vent and CID Design
Most semi-solid state battery programs I review treat the vent as an afterthought, a hole the mechanical team adds after the chemistry is locked. That orde…
Sodium-Ion Battery Fire Suppression and Detection Design
Fire protection for a battery room is usually specified by someone who has never watched a cell vent. I have, twice, in abuse testing, and both times the s…
Sodium-Ion Battery Water-Based Electrode Processing
Water-based electrode processing keeps coming up because it removes the most expensive and most regulated fluid on the coating line. I have run NMP and aqu…
Semi-Solid State Battery Helium Leak and Insulation
I have rejected more semi-solid state battery lots over seal leaks and insulation failures than over capacity shortfalls. Capacity fades slowly and predict…
Semi-Solid State Battery Moisture and Contamination Control
Most of the semi-solid state battery failures I have been asked to autopsy in the last four years were not caused by a bad chemistry. They were caused by w…
Sodium-Ion Battery Electrolyte Salt Selection
Sodium-ion battery electrolyte salt selection is one of those decisions that looks like a purchasing detail and turns out to define cycle life, low-tempera…
Semi-Solid State Battery Tab Welding and Joint Design
After cell chemistry, nothing limits what a semi-solid state battery can deliver like its tab joints. I have watched packs built from excellent cells fail…
Semi-Solid State Battery Thermal Interface Materials
Karl Huang here, senior lithium battery engineer. When my team moved from conventional lithium battery packs to semi-solid state battery modules, the therm…