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.
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Si alloy powder for negative electrode with specific composition
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.
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