Title:
LITHIUM SILICATE COMPOUND, METHOD FOR PRODUCING SAME, POSITIVE ELECTRODE ACTIVE MATERIAL AND POSITIVE ELECTRODE FOR SECONDARY BATTERIES, AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2013/084396
Kind Code:
A1
Abstract:
This lithium silicate compound is represented by general formula Li2-a+bAaMn(1-x-y)CoxMySiO4+αClβ (wherein A represents at least one element that is selected from the group consisting of Na, K, Rb and Cs; M represents at least one element that is selected from the group consisting of Mg, Ca, Al, Ni, Fe, Nb, Ti, Cr, Cu, Zn, Zr, V, Mo and W; and the subscripts respectively satisfy 0 ≤ a < 0.2, 0 ≤ b < 1, 0 < x < 1, 0 ≤ y ≤ 0.5, -0.25 ≤ α ≤ 1.25 and 0 ≤ β ≤ 0.05). This lithium silicate compound is used as a positive electrode active material for secondary batteries, which has a high discharge average voltage and is capable of absorbing and desorbing lithium ions.
Inventors:
KOJIMA AKIRA (JP)
KOJIMA TOSHIKATSU (JP)
TABUCHI MITSUHARU (JP)
SAKAI TETSUO (JP)
MIYUKI TAKUHIRO (JP)
NIWA JUNICHI (JP)
KAWASUMI KAZUHITO (JP)
MURASE MASAKAZU (JP)
KOJIMA TOSHIKATSU (JP)
TABUCHI MITSUHARU (JP)
SAKAI TETSUO (JP)
MIYUKI TAKUHIRO (JP)
NIWA JUNICHI (JP)
KAWASUMI KAZUHITO (JP)
MURASE MASAKAZU (JP)
Application Number:
PCT/JP2012/006559
Publication Date:
June 13, 2013
Filing Date:
October 12, 2012
Export Citation:
Assignee:
TOYOTA JIDOSHOKKI KK (JP)
NAT INST OF ADVANCED IND SCIEN (JP)
NAT INST OF ADVANCED IND SCIEN (JP)
International Classes:
C01B33/32; H01M4/58
Domestic Patent References:
| WO2010089931A1 | 2010-08-12 |
Foreign References:
| JP2007335325A | 2007-12-27 | |||
| JP2010257592A | 2010-11-11 |
Attorney, Agent or Firm:
OHKAWA, HIROSHI (JP)
Okawa 宏 (JP)
Okawa 宏 (JP)
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Claims:
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