Negative electrode for lithium secondary battery
AssigneeSanyo Electric Co., Ltd.
InventorsTakuya Hashimoto, Atsushi Fukui, Yasuhiko Itoh
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Abstract
The present invention provides a negative electrode for a lithium secondary battery and a lithium secondary battery having the negative electrode. The negative electrode includes an aluminum alloy powder as an active material, wherein the alloy is substantially amorphous, and is represented by the formula AlxSiyMz, where M is at least one transition metal selected from the group consisting of Ni, Co, Cu, Fe, Cr and Mn; x, y and z are 40≦x≦80; 10≦y≦50 and 1≦z≦20, respectively, and x+y+z=100; and average particle diameter of the alloy is not greater than 50 μm.
Claims8
A negative electrode for a lithium secondary battery comprising an aluminum alloy powder as an active material
- wherein said alloy is substantially amorphous and is represented by a formula AlxSiyMz, where M is at least one transition metal selected from the group consisting of Ni, Co, Cu, Fe, Cr and Mn;
- x, y and z are 40≦x≦80, 10≦y≦50 and 1≦z≦20, respectively, and x+y+z=100;
- and
- average particle diameter of said alloy is not greater than 50 μm.
A lithium secondary battery comprising a positive electrode, a negative electrode and a non-aqueous electrolyte
- wherein an active material of said positive electrode comprises at least a lithium-transition metal complex oxide selected from the group consisting of lithium cobaltate, lithium nickelate and lithium manganate;
- and
- an active material of said negative electrode comprises aluminum alloy powder;
- wherein said alloy is substantially amorphous and is represented by a formula AlxSiyMz, where M is at least one transition metal selected from the group consisting of Ni, Co, Cu, Fe, Cr and Mn;
- x, y and z are 40≦x≦80, 10≦y≦50 and 1≦z≦20, respectively, and x+y+z=100;
- and
- average particle diameter of said alloy is not greater than 50 μm.
Dependencies are inferred from the claim text.