Daido Steel has filed a patent for a Si alloy powder for a negative electrode, containing Si, SiX compound, and SnY or AlY compound phases. The powder has a particle diameter of 50 µm or less and Si content ranging from 30% to 95%. GlobalData’s report on Daido Steel gives a 360-degree view of the company including its patenting strategy. Buy the report here.

Smarter leaders trust GlobalData


Data Insights Daido Steel Co Ltd - Company Profile

Buy the Report

Data Insights

The gold standard of business intelligence.

Find out more

According to GlobalData’s company profile on Daido Steel, Hydrogen fuel cells was a key innovation area identified from patents. Daido Steel's grant share as of January 2024 was 29%. Grant share is based on the ratio of number of grants to total number of patents.

Si alloy powder for negative electrode with specific composition

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

The patent application (Publication Number: US20240038977A1) discloses a Si alloy powder designed for use in negative electrodes. The Si alloy powder includes a Si phase, a SiX compound phase, and either a SnY compound phase or an AlY compound phase. The element X in the SiX compound phase can be Fe, Ni, Cr, Co, Mn, Zr, or Ti, with the Si phase making up 30% to 95% of the entire Si alloy. Additionally, the average particle diameter of the Si alloy powder is 50 µm or less.

Furthermore, the patent application details specific variations of the Si alloy powder, such as different element X options including Fe, Ni, Cr, and Ti. The average particle diameter can also be reduced to 10 µm or less for certain applications. The Si phase, SiX compound phase, and SnY or AlY compound phase are present separately, with specific particle diameter ranges for each component. The element Y in the SnY or AlY compound phase can include elements like Ag, Au, B, Ba, Be, C, Ca, Cd, Ce, Cs, Dy, Er, Eu, F, Ga, Gd, H, Hf, Hg, Ho, Ir, La, Mo, N, Nd, O, Os, Pr, Pt, Rh, Re, Ru, Sb, Sc, Se, Sr, Ta, Tc, Te, Th, Tl, Tm, W, and Y. These variations in composition and particle size allow for tailored performance in negative electrode applications.

To know more about GlobalData’s detailed insights on Daido Steel, buy the report here.

Data Insights


The gold standard of business intelligence.

Blending expert knowledge with cutting-edge technology, GlobalData’s unrivalled proprietary data will enable you to decode what’s happening in your market. You can make better informed decisions and gain a future-proof advantage over your competitors.


GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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