Method for making negative electrode material with silicon and silicate

ChangeBridge: Patent Apps - Batteries (H01M)

Detected March 27th, 2026

Summary

The USPTO has published a patent application detailing a method for creating negative electrode material for batteries, involving silicon and silicate. The application outlines specific heating and mixing steps, with potential post-processing options for the composite materials.

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What changed

This document is a published US patent application (US20260088279A1) for a method of making negative electrode material for batteries, comprising silicon and silicate. The method involves specific steps of contact-fusion of raw materials, mixing silicon with these fused materials to form a composite, and vaporizing the composite. The heating temperature range is specified between the lowest melting temperature of the fused materials and 1400° C. Optional post-processing steps like heat treatment, pulverization, and carbon coating are also mentioned.

This patent application does not impose immediate compliance obligations on regulated entities. However, it represents a new development in battery materials technology. Companies involved in battery manufacturing or materials research may find this patent relevant for their R&D efforts, potential licensing opportunities, or to understand the evolving landscape of energy storage technologies. No specific compliance deadlines or penalties are associated with this publication.

Source document (simplified)

← USPTO Patent Applications

METHOD OF MAKING NEGATIVE ELECTRODE MATERIAL

Application US20260088279A1 Kind: A1 Mar 26, 2026

Inventors

Hiroshi SUENAGA, Yusuke KASHITANI

Abstract

A method of making negative electrode material having silicon and silicate includes the steps of providing raw materials for contact-fusion, heating the raw materials to form materials with a contact-fusion state, mixing silicon and the materials after forming contact-fusion to form a composite material, and vaporizing the composite materials on the deposition zone after the mixing step. The heating step is performed at the temperatures between the lowest melting temperature of the materials with the contact-fusion state and 1400° C. The deposited composite materials can be optionally heat treated, pulverized, and/or coated with carbon. Also provided is a negative electrode material of silicon and silicate made from the steps described above. The negative electrode material of silicon and silicate can be an Li—Mg silicate having silicon powder dispersed therein, the Li—Mg silicate forming a uniform interface on surfaces of the silicon powder.

CPC Classifications

H01M 4/364 C04B 35/20 C04B 35/6262 C04B 35/62807 C04B 35/62839 C04B 35/64 C04B 35/653 H01B 1/04 H01M 4/366 H01M 4/386 H01M 4/483 H01M 4/5825 H01M 4/625 C04B 2235/3203 C04B 2235/3206 C04B 2235/3418 C04B 2235/3445 C04B 2235/428 C04B 2235/442 H01M 2004/027