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Tesla patents battery mix using iron and nickel for longer life

Patent drawing
Patent drawing from the official filing.

Tesla describes a battery component that mixes two different chemical powders: one based on iron phosphate and another based on nickel oxide. The filing says this blend helps the battery hold its charge better over time and last longer through many charge cycles.

Why it mattersThis could lead to electric vehicles that keep their range longer as they age, which is a key concern for car owners.

In the filing’s own words

Blended cathode active materials including an iron phosphate based active material and a nickel oxide based active material, and methods of manufacture, are described. The blended cathode active materials enable energy storage devices with improved performances, including but not limited to improved capacity retention and cycling lifetime.

What exactly they claim (claim 1)

1. A blended cathode active material, comprising: an iron phosphate based active material; and a nickel oxide based active material comprising at least one lithium nickel manganese cobalt oxide or lithium nickel cobalt aluminum oxide.

Facts

Company
Tesla (Tesla, Inc.)
Official title
BLENDED CATHODE ACTIVE MATERIAL INCLUDING IRON PHOSPHATE BASED AND NICKEL OXIDE BASED MATERIALS, AND METHODS THEREOF
Publication number
US20260302181A1
Application number
19478761
Filed
Apr 30, 2024
Published
Oct 1, 2026
Inventors
4
Claims
25

Classified under

H01M 4/364 Electricity & electronicsC01G 53/50 Chemistry & metalsC01G 53/506 Chemistry & metalsH01M 4/525 Electricity & electronicsH01M 4/5825 Electricity & electronicsC01P 2002/72 Chemistry & metals
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.