Lithium-ion batteries with stable electrodes patent application

ChangeBridge: Patent Apps - Batteries (H01M)

Published September 24th, 2024

Detected March 27th, 2026

Summary

The USPTO has published a patent application (US20260088296A1) for lithium-ion batteries featuring stable electrodes. The application details novel cathode, anode, separator, and electrolyte compositions, including a modified gel-free binder to prevent defluorination. This innovation aims to improve battery stability and performance.

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What changed

This document is a patent application filed with the USPTO, detailing a new design for lithium-ion batteries. The invention focuses on enhancing electrode stability through specific material compositions for the cathode (nickel-rich ternary materials like LiNixMnyCozO2 or LiNixAlyCozO2 with x >= 0.8), anode (silicon, carbon nanotubes, lithium metal, etc.), and a porous polymer separator. A key innovation is the use of a modified polyvinylidene fluoride (PVDF) binder that is grafted with monomers containing unsaturated carbon-carbon double bonds and functional groups to prevent defluorination and crosslinking when in contact with nickel-rich cathode materials.

While this is a patent application and not a regulation, it signals potential future technological advancements in battery manufacturing. Companies involved in battery production, materials science, and energy storage should monitor such patent filings as they may indicate emerging trends, competitive landscapes, and future intellectual property considerations. No immediate compliance actions are required, but awareness of these technological developments is advisable for strategic planning.

Source document (simplified)

← USPTO Patent Applications

LITHIUM-ION BATTERIES WITH HIGHLY STABLE ELECTRODES

Application US20260088296A1 Kind: A1 Mar 26, 2026

Inventors

Yong ZHU, Jianping HAN, Pao Chieh WANG, Tze Lok Andy CHAN, Yingshun LI, Yangfan ZHOU, Shengbo LU, Li FU, Chenmin LIU

Abstract

A lithium-ion battery is provided, including a cathode with one or more nickel-rich ternary cathode materials, specifically LiNixMnyCozO2 or LiNixAlyCozO2, where x, y, and z sum to 1 and x is at least 0.8. The battery also includes an anode made from materials such as silicon, silicon oxide, carbon nanotubes, lithium metal, graphene, and graphite, and features a porous polymer separator with a porosity of 30% to 90%. An electrolyte is also included. A key aspect is the use of a gel-free binder, which is a modified polyvinylidene fluoride (PVDF) grafted with monomers containing at least one unsaturated carbon-carbon double bond and functional groups. This modification prevents defluorination and crosslinking of the PVDF when in contact with the nickel-rich cathode materials.