With oxidation stability up to about 4.21 V, halide solid electrolytes are candidates for the high-voltage cathode interface. We compare them with sulfides and oxides and read the composition claim of Panasonic’s US11784345B2.
In-plane thermal conductivity inside a cell is tens of times higher than through-plane. We explain how this anisotropy separates surface and tab cooling outcomes, alongside GM’s tab cooling patent.
LTO avoids lithium plating with a high 1.55 V operating potential but takes on lower capacity and gas generation. We read the basis for its life, fast charging and low-temperature use alongside GM’s LTO coating patent.
As cells grow longer and wider, the current path to the tab lengthens and internal current and temperature become uneven. We explain the principle and the claim scope of BYD’s long-cell patent.
Natural graphite accumulates cost in spheroidization yield, synthetic graphite in graphitization power and carbon. We read the process and scope of rights through US9853289B2, which claims uncoated natural graphite.
Semi-solid electrodes pack a thick paste mixed in electrolyte and skip drying and filling. The gains and risks of thickness, and patents shifting to equipment motion.
Over 70% of formation gas is ethylene, and gas escapes more slowly from larger cells. Read with LG Energy Solution’s US12456749B2, which claims the degassing pressure ratio.
Bipolar electrodes move series connection inside the cell. Why parts and resistance decrease, and why the technical challenges and patents cluster at edge sealing.
A separator base film is a design of when pores close and how long shape holds. Wet PE vs. dry PP, read with Celgard’s trilayer separator patent (US5691077A).
In CTB, the cell becomes a part that carries body loads through bonding. How cell requirements change after CTP, and a patent claiming top plate = floor.