Publication number: 20120328915
Abstract: A lithium-ion secondary battery includes a positive electrode, a negative electrode containing an active material, and an electrolytic solution, in which the active material includes a core portion capable of occluding and releasing lithium ions, and a covering portion arranged on at least part of a surface of the core portion, in which the covering portion contains, as constituent elements, Si, O, and at least one element M1 selected from Li, C, Mg, Al, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Ge, Zr, Mo, Ag, Sn, Ba, W, Ta, Na, and K, and the atomic ratio y (O/Si) of O to Si is 0.5?y?1.8.
Type:
Application
Filed:
June 18, 2012
Publication date:
December 27, 2012
Applicant:
SONY CORPORATION
Inventors:
Takakazu Hirose, Kenichi Kawase, Takashi Fujinaga, Isao Koizumi, Toshio Nishi
Publication number: 20120326500
Abstract: A lithium-ion secondary battery includes a positive electrode, a negative electrode containing an active material, and an electrolytic solution, in which the active material contains, as constituent elements, Si, O, and at least one element Ml selected from Li, C, Mg, Al, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Ge, Zr, Mo, Ag, Sn, Ba, W, Ta, Na, and K, and the atomic ratio x (O/Si) of O to Si is 0.5?x?1.8.
Type:
Application
Filed:
June 19, 2012
Publication date:
December 27, 2012
Applicant:
SONY CORPORATION
Inventors:
Takakazu Hirose, Kenichi Kawase, Toshio Nishi, Isao Koizumi