LITHIUM-CONTAINING TRANSITION METAL COMPLEX OXIDE, POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY CELL, POSITIVE ELECTRODE FOR LITHIUM SECONDARY CELL, LITHIUM SECONDARY CELL, AND METHOD FOR MANUFACTURING LITHIUM-CONTAINING TRANSITION METAL COMPLEX OXIDE
Applicants
Sumitomo Metal Mining Co., Ltd.
Inventors
ARIMURA, Takashi, TAKAMORI, Kenji, KAGEURA, Jun-ichi, SATO, Yuichi, MAEDA, Yusuke
Abstract
This lithium-containing transition metal composite oxide includes secondary particles that are aggregates of primary particles into or from which lithium ions are dopable or dedopable, and satisfies the following conditions:(1) the lithium-containing transition metal composite oxide is represented by Formula (I), Li[Lix(Ni(1-y-z-w)CoyMnzMw)1-x]O2... (I)(2) from X-ray photoelectron spectroscopy, a specific y is calculated for each of the surface of the secondary particle and the inside of the secondary particle, and when the y value of the surface of the secondary particle is referred to as γ1 and the y value of the inside of the secondary particle is referred to as γ2, γ1 and γ2 satisfy the condition of Formula (II).0.3≤γ1/γ2≤1.0
IPC Classifications
Designated States
AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR