Furukawa. has filed a patent for a sulfide-based inorganic solid electrolyte material containing Li, P, and S elements. The material’s 31P-NMR spectrum shows a significant presence of P2S6 glass structure peaks alongside PS4 structure peaks. GlobalData’s report on Furukawa gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Furukawa, Lithium-ion batteries was a key innovation area identified from patents. Furukawa's grant share as of January 2024 was 33%. Grant share is based on the ratio of number of grants to total number of patents.

Solid electrolyte material with specific p2s6 glass structure

Source: United States Patent and Trademark Office (USPTO). Credit: Furukawa Co Ltd

The patent application (Publication Number: US20240030488A1) discloses a sulfide-based inorganic solid electrolyte material for use in lithium-ion batteries. The material comprises Li, P, and S as constituent elements and exhibits specific characteristics in a 31P-NMR spectrum. The material must have a certain ratio of peaks derived from PS4 and P2S6 structures to meet the defined criteria.

Furthermore, the solid electrolyte material must possess a lithium ionic conductivity of 1.5×10-3 S/cm or higher and be composed of particles with a median size of 0.1 to 10 µm. The molar ratios of Li/P and S/P in the material are also specified. The patent application extends to the use of this solid electrolyte material in a solid electrolyte, a solid electrolyte membrane, and ultimately in a lithium-ion battery, where it can be incorporated into the positive electrode active material layer, the electrolyte layer, or the negative electrode active material layer to enhance battery performance and stability.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies