Graphite-density and PVDF-coated separator lithium-ion design unlocks capacity-fade-resistant batteries without extra licensing.
The patent specifies a lithium-ion (or lithium-polymer) cell using a graphite anode at 1.2–1.5 g/cm³, a LiNiO2 cathode at 3.0–3.3 g/cm³, and a PVDF-coated separator that mechanically holds the electrode stack together. This combination targets capacity fade by stabilizing electrode/separator contact through cycling-related stress and performance drift. Previously, manufacturing cells matching these specific electrode densities and PVDF separator approach required permission from the patent holder.
Build higher cycle-life lithium-ion packs for drones, EV accessories, and power tools using capacity-fade-resistant cell stacks.
An improved lithium-ion or lithium-polymer battery that is capacity-fade resistant. The battery includes an anode comprised of graphite where density of the graphite is in a range from 1.2 to 1.5 g/c3; and the battery further has a cathode that is comprised of LiNiO2 present at a density in a range from 3.0 to 3.3 g/c3. The battery also includes an electrolyte and a separator between the anode and cathode, and the separator is coated with PVDF such that the anode, cathode, and separator are held together to form the electricity-producing battery.
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