Claim 1 of US11749842B2, the granted patent protecting the “tabless” electrode of Tesla’s 4680 cell, does not claim a structure without tabs; it claims a structure in which a plurality of spaced-apart conductive portions are bent and contact the can’s lid (cap) in a concentric circular pattern.
Silicon anode materials have a theoretical capacity more than ten times that of graphite, yet in commercial batteries they remain an additive blended into graphite in small amounts.
Manganese and nickel dissolved from the cathode deposit on the anode and disturb the SEI. We read the dissolution path driven by HF and high voltage, the role of the CEI, and Enevate’s US12211998B2, tied to silicon anode cells.
Announcements naming 2026-2027 as the mass-production timing for solid-state batteries keep coming, but their content sits at different development stages: A-sample shipments, pack vehicle verification, pilot-line prototypes and trade-show displays.
When reading a battery patent publication, the first place to look is not the abstract or the drawings but the independent claim, usually claim 1.
High-nickel ternary (NCM) and lithium iron phosphate (LFP) give different answers even within the same lithium-ion cell.
Even cells with the same chemical composition differ greatly in volumetric efficiency, heat dissipation and mechanical stability depending on how the electrodes are wound or folded and what casing they are packed into.
As ESS LFP prismatic cells grow beyond 500 Ah, the ratios of electrolyte, cooling, and assembly method are being recalculated. We review them with CATL’s electrolyte retention coefficient application.
The quality of a PBA cathode is decided by selective drying that removes zeolitic water and keeps bound water. We read the crystal water problem through the “d=0, e>0” claim of Sharp’s US9478798B2.
The boundary between the coated and uncoated portions of a cathode is where short-circuit risk concentrates. We explain how ceramic insulating layers guard it, with the claim scope of an LG Energy Solution patent.