Lithiumhaltiges Übergangsmetallverbundoxid, Positivelektrodenaktivmaterial für Lithiumsekundärbatterie, Positivelektrode für Lithiumsekundärbatterie, Lithiumsekundärbatterie und Verfahren zur Herstellung von Lithiumhaltigem Übergangsmetallverbundoxid

Details

Veröffentlichungs-Nr.

EP4723238

Anmeldetag

30. November 2018

Veröffentlichung

8. April 2026

Rechtsraum

EP

IPC

H01M4/525(HITACHI METALS LTD et al.)

Abstract

A method for manufacturing a lithium-containing transition metal composite oxide including secondary particles that are aggregates of primary particles into or from which lithium ions are dopable or dedopable, the method comprising: a mixing step of mixing a lithium compound and a metal composite compound containing at least nickel to obtain a mixture; a calcining step of calcining the mixture to obtain a calcined product; and a washing step of washing the calcined product, wherein the lithium-containing transition metal composite oxide satisfies the following conditions, (1) the lithium-containing transition metal composite oxide is represented by Formula (I), Li[Li<x>(Ni<(1-y-z-w)>Co<y>Mn<z>M<w>)<1-x>]O<2> ... (I) wherein in Formula (I), 0 ≤ x ≤ 0.2, 0 < y ≤ 0.5, 0 ≤ z ≤ 0.8, 0 ≤ w ≤ 0.1, and y + z + w < 1 are satisfied, and M represents one or more metals selected from the group consisting of Mg, Ca, Sr, Ba, Zn, B, Al, Ga, Ti, Zr, Ge, Fe, Cu, Cr, V, W, Mo, Sc, Y, Nb, La, Ta, Tc, Ru, Rh, Pd, Ag, Cd, In, and Sn (2) when an area value of a peak appearing at 53.8 eV in a lithium 1s spectrum is referred to as α and an area value of a peak appearing at 529.0 eV in an oxygen 1s spectrum is referred to as β when X-ray photoelectron spectroscopy is performed, and a ratio between α and β is referred to as γ (α/β = γ), γ is calculated for each of a surface of the secondary particle and an inside of the secondary particle, and when a γ value of the surface of the secondary particle is referred to as γ1 and a γ value of the inside of the secondary particle is referred to as γ2, γ1 and γ2 satisfy a condition of Formula (II) 0.3 ≤ γ 1 / γ 2 ≤ 1.0 <img class="EMIRef" id="ace285d2-ccb3-43f8-a8fa-dcc349f0b374-ia01" />

Anmelder

Firma

Sumitomo Metal Mining Co., Ltd.

Land

🇯🇵 Japan