Intermetallic M—Sn5 (M=Fe, Cu, Co, Ni) compound and a method of synthesis thereof
AssigneeBrookhaven Science Associates, LLC
InventorsXiao-Liang Wang, Weiqiang Han
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Abstract
Novel intermetallic materials are provided that are composed of tin and one or more additional metal(s) having a formula M(1-x)-Sn5, where −0.1≦x≦0.5, with 0.01≦x≦0.4 being more preferred and the second metallic element (M) is selected from iron (Fe), copper (Cu), cobalt (Co), nickel (Ni), and a combination of two or more of those metals. Due to low concentration of the second metallic element, the intermetallic compound affords an enhanced capacity applicable for electrochemical cells and may serve as an intermediate phase between Sn and MSn2. A method of synthesizing these intermetallic materials is also disclosed.
Claims9
An intermetallic material comprising:
- a tin (Sn)-based intermetallic compound having a formula (1)
- M(1-x)-Sn5, (1)
- wherein a second metallic element (M) is selected from the group consisting of iron (Fe), copper (Cu), cobalt (Co), and nickel (Ni) and x ranges between about −0.1 and about 0.5, and wherein the tin (Sn)-based intermetallic material is a single crystal having a tetragonal lattice in the P4/mcc space group and is a nanosphere with a diameter of about 10 nm to about 500 nm, as measured across a shortest cross-section of the nanosphere.
An intermetallic material comprising:
- a tin (Sn)-based intermetallic compound having a formula
- Fe0.74Sn5 or Co0.63Sn5.
An intermetallic material comprising:
- a tin (Sn)-based intermetallic compound having a formula
- Fe0.74Sn5.
Dependencies are inferred from the claim text.