| 摘要 |
[Object] The object is to provide a negative electrode material for a lithium secondary battery, wherein a sulfide-based negative electrode with water-resistant properties can exert excellent cycle characteristics and high output performance while maintaining a high discharge capacity and there is no precipitation of lithium dendrites during charge at low temperature. [Means for Solving Problems] A negative electrode material for a lithium secondary battery comprising sulfur and sulfide glass including the following components ( i ) and ( ii ):
( i ) at least one or more elements selected from a group consisting of Sb, As, Bi, Ge, Si, Cu, Zn, Pd, In and Zr; and
( ii ) at least one or more elements selected from a group consisting of Se, Te, Ga, Sn, Pb, Cd, Al, Fe, Mg, Ca, Co, Ag, Sr, P and Ba,
wherein the ratio of the above components is sulfur: 40-80 mol %, ( i ): 1-50 mol % and ( ii ): 1-50 mol %, respectively. |
