2004-311429 is referenced by 14 patents.

PROBLEM TO BE SOLVED: To provide an electrode material and an electrode for a lithium secondary battery exhibiting high lithium insertion/elimination efficiency.SOLUTION: The electrode material for a lithium secondary battery comprises a particle 100 of an alloy containing silicon as a main component. The composition of the alloy is determined by a type of an element and an atomic ratio allowing component to completely melt together into a melted liquid state of the alloy. The alloy in a solid state comprises a phase selected from the group composed of a pure metal and a solid solution. The alloy particle 100 has a micro-structure in which microcrystalline or amorphous elements 102, 103 other than silicon are dispersed in microcrystalline silicon or amorphized silicon. A silicon content in the silicon alloy is not less than 50 wt.% and not more than 95 wt.%, and the silicon alloy is in the form of a fine particle. Further, the electrode material for a lithium secondary battery comprises silicon particles or silicon alloy particles wherein the silicon is doped with at least one element selected from a group composed of boron, aluminum, and gallium as a dopant in an atomic ratio of 10-8 to 10-1.

Electrode material for lithium secondary battery, electrode structure having the electrode material, and secondary battery having the electrode structure
Application Number
Publication Number
Application Date
March 24, 2004
Publication Date
November 4, 2004
Ogura Takao
Yamada Yasuhiro
Suzuki Nobuyuki
Asao Masaya
Kawakami Soichiro
H01M 10/40
H01M 04/62
H01M 04/58
H01M 04/02
C22C 28/00
H01M 04/38