Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Reexamination Certificate
2005-04-19
2005-04-19
Ruthkosky, Mark (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
C429S231950
Reexamination Certificate
active
06881518
ABSTRACT:
A negative electrode material for a nonaqueous electrolyte secondary battery having a high discharge capacity and a good cycle life is made from alloy particles having an average particle diameter of 0.1-50 μm and including Si phase grains40and a phase of a solid solution or an intermetallic compound of Si and other element selected from Group 2A elements, transition elements, Group 3B elements, and Group 4B elements from the long form periodic table (for example, an NiSi2phase42and an [NiSi2+NiSi] phase41) at least partially enveloping the Si phase grains. 5-99 wt % of this material is Si phase grains. The alloy particles can be manufactured by rapid solidification (such as atomization or roller quenching) of a melt including Si and the other element, or by adhering the other element to Si powder by electroless plating or mechanical alloying and then performing heat treatment. Even if rapid solidification is carried out, a negative electrode material having a good discharge capacity and cycle life is obtained without heat treatment.
REFERENCES:
patent: 3969139 (1976-07-01), Lai
patent: 4048395 (1977-09-01), Lai
patent: 4346152 (1982-08-01), Sammells et al.
patent: 5656394 (1997-08-01), Koksbang et al.
patent: 5869208 (1999-02-01), Miyasaka
patent: 6090505 (2000-07-01), Shimamura et al.
patent: 6235427 (2001-05-01), Idota et al.
patent: 6300013 (2001-10-01), Yamada et al.
patent: 3-280363 (1991-11-01), None
patent: 5-159780 (1993-06-01), None
patent: 06325764 (1994-11-01), None
patent: 7-240201 (1995-12-01), None
patent: 9-636651 (1997-07-01), None
patent: 63-13264 (1998-01-01), None
patent: 10162823 (1998-06-01), None
patent: 10-199524 (1998-07-01), None
patent: 11-86853 (1999-03-01), None
patent: 11-176470 (1999-07-01), None
patent: 11-214004 (1999-08-01), None
patent: 11-242954 (1999-09-01), None
Abe Masaru
Kaminaka Hideya
Negi Noriyuki
Nitta Yoshiaki
Okamura Kazuhiro
Ruthkosky Mark
Sumitomo Metal Industries Ltd.
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