Umicore

Umicore Korea, Ltd.

Syensqo Sa

Areum Park

Jens M Paulsen

JiHye Kim

Song-Yi Han

Randy De Palma

Dae-Hyun Kim

Hee-Sung Gil

Kyung-Tae Lee

TaeHyeon Yang

Shinichi Kumakura

Jean-Sébastien Bridel

Ji-Hye Won

Hyuncheol Lee

Hae-Young Kim

Lawrence Alan Hough

Mi-Soon Oh

Moon-Hyung Choi

Jukyoung Lee

Yagmur Celasun

Jihye Kim

A liquid electrolyte lithium secondary battery cell comprising: —a positive electrode material comprising a lithium transition metal-based oxide powder having a general formula Li((Ni(NiMn)Co)A)O, wherein A is a dopant, −0.025≤a≤0.025, 0.18≤x≤0.22, 0.42≤z≤0.52, 1.075<z/y<1.625, x+y+z=1 and k≤0.01; and—an electrolyte composition comprising: a) at least one cyclic carbonate, b) at least one fluorinated acyclic carboxylic acid ester, c) at least one electrolyte salt, d) at least one lithium compound selected from lithium phosphate compounds, lithium boron compounds, lithium sulfonate compounds and mixtures thereof, e) at least one cyclic sulfur compound, and f) optionally at least one cyclic carboxylic acid anhydride.

Ni based lithium-ion secondary battery comprising a fluorinated electrolyte

The invention provides a positive electrode material for lithium ion batteries, comprising a lithium transition metal-based oxide powder having a general formula Li((Ni(NiMn)Co)A)O, wherein A is a dopant, with −0.025≤a≤0.025, 0.15≤x≤0.22, 0.42≤z≤0.52, 1.075<z/y<1.300, x+y+z=1 and k≤0.01. Different embodiments provide the following features: the lithium transition metal-based oxide powder has a carbon content ≤1000 ppm or even ≤400 ppm; the lithium transition metal-based oxide powder has a sulfur content between 0.05 and 1.0 wt %; and a dopant A is Zr, and the powder further comprises up to 1 wt % of a coating comprising a boron compound and WO.

Ni based cathode material for rechargeable lithium-ion batteries

The invention provides a positive electrode material for lithium ion batteries, comprising a lithium transition metal-based oxide powder having a general formula Li((Ni(NiMn)Co)A)O, wherein A is a dopant, with −0.025≤a≤0.025, 0.15≤x≤0.22, 0.42≤z≤0.52, 1.075<z/y<1.300, x+y+z=1 and k≤0.01. Different embodiments provide the following features:

A crystalline precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor having a general formula Li((Ni(NiMn)Co)A)O, wherein A comprises at least one element of the group consisting of: Mg, Al, Ca, Si, B, W, Zr, Ti, Nb, Ba, and Sr, with 0.05&#x2264;x&#x2264;0.40, 0.25&#x2264;z&#x2264;0.85, x+y+z=1, 0&#x2264;k&#x2264;0.10, and 0&#x2264;a&#x2264;0.053, wherein said crystalline precursor powder has a crystalline size L, expressed in nm, with 15&#x2264;L&#x2264;36.

Precursor and method for preparing Ni based cathode material for rechargeable lithium ion batteries

The invention provides a positive electrode active material for a lithium ion battery, comprising a lithium transition metal-based oxide powder, the powder comprising single crystal monolithic particles comprising Ni and Co and having a general formula Li((Ni(NiMn)Co)A)02, wherein A is a dopant, &#x2212;0.02&#x3c;a&#x2264;0.06, 0.10&#x2264;x&#x2264;0.35, 0&#x2264;z&#x2264;0.90, x+y+z=1 and k&#x2264;0.01, the particles having a cobalt concentration gradient wherein the particle surface has a higher Co content than the particle center.

Positive electrode material for rechargeable lithium ion batteries

A crystalline precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor having a general formula Li((Ni(NiMn)Co)A)O, wherein x+y+z=1, 0.1&#x2264;x&#x2264;0.4, 0.25&#x2264;z&#x2264;0.52, A is a dopant, 0&#x2264;k&#x2264;0.1, and 0.03&#x2264;a&#x2264;0.35, wherein the precursor has a crystalline size L expressed in nm, with 15&#x2264;L&#x2264;36. Also a method is described for manufacturing a positive electrode material having a general formula Li'M&#x2032;&#x2212;O, with M&#x2032;=(Ni(NiMn)CO)A, wherein x+y+z=1.0.1&#x2264;x&#x2264;0.4, 0.25&#x2264;z&#x2264;0.52, A is a dopant, 0&#x2264;k&#x2264;0.1, and 0.01&#x2264;a&#x2032;&#x2264;0.10, by sintering the lithium deficient precursor powder mixed with either one of LiOH, LiOH.HO, in an oxidizing atmosphere at a temperature between 800 and 1000&#xb0; C., for a time between 6 and 36 hrs.

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Cheonan, South Korea

Areum Park