Umicore

Umicore Korea, Ltd.

Lg Chem, Ltd

Tokyo University of Science Foundation

Syensqo Sa

Jens M Paulsen

Hong-Kyu Park

JiHye Kim

Sun Sik Shin

Sin Young Park

Ho Suk Shin

Maxime Blangero

Randy De Palma

HeonPyo Hong

Dae-Hyun Kim

Song-Yi Han

Xin Xia

Jing Zhang

Areum Park

TaeHyeon Yang

Liang Zhu

Yong Hoon Kwon

Shinichi Kumakura

Hong Kyu Park

JinDoo Oh

Hee-Sung Gil

Daniël Nelis

Eric Robert

YuRi Lee

Jin Hu

HyeJeong Yang

Jaeup Jang

HyeYun Yang

Kyung-Tae Lee

Sinyoung Park

Da-In Choi

Thomas Lau

Kyubo Kim

Wenlong Yang

DaeHyun Kim

Yonghoon Kwon

Hyeyun Cha

Joon Sung Bae

Jeffrey R Dahn

Shinichi Komaba

Kris Driesen

Naoaki Yabuuchi

Jean-Sébastien Bridel

Donggun Park

Robert Ellenwood

Hyo Sun Ahn

Songhun Yoon

Kasper Lambrighs

Gyeong-Ok Kim

Dirk Vanhoutte

Lawrence Alan Hough

Hae-Young Kim

Hyuncheol Lee

Mi-Soon Oh

Moon-Hyung Choi

Ji-Hye Won

AReum Park

Rajalakshmi Senthil Arumugam

Elsye Agustina

KyungTae Lee

DaeKwang Kim

Jin-Doo Oh

Jukyoung Lee

Yagmur Celasun

Munju Kim

Ji-Hye Kim

Ryo Hara

JaeRyoung Lee

Masataka Kajiyama

Hyunjoo Je

Heonpyo Hong

Jihye Kim

Hyeyun Yang

Yuri Lee

Jindoo Oh

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 relates to an electrochemically active powder comprising particles containing a compound represented by formula AM(XO)wherein A comprises an alkaline metal; M comprises at least one transition metal and optionally at least one non-transition metal; and X is chosen among S, P and Si; wherein 0<a≤3.2; 1≤m≤2; and 1≤n≤3; wherein said particles are at least partially coated with a layer comprising a carbonaceous material, said carbonaceous material comprising a highly ordered graphite, wherein said highly ordered graphite has a ratio (I/I) of a peak intensity (I) at 1360 cmto a peak intensity (I) at 1580 cm, obtained by Raman spectrum analysis, of at most 3.05.

Carbon coated electrochemically active powder

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 present invention provides a process is presented for preparing a positive electrode active material for rechargeable lithium ion batteries. The process comprises a sintering step having a short sintering time. This improves the production throughput. More particularly, the process applies to positive electrode active material powders having a general formula Li(NiMnCoMe)O, wherein Me comprises at least one element of the group consisting of Al, Mg, Ti, Zr, W, Nb, B, and Sr, with −0.1≤a≤0.1, 0.33≤x≤0.95, 0≤y≤0.35, 0<z≤0.35, 0≤c≤0.05, and x+y+z+c=1. The sintering step is performed for a predefined sintering time t, expressed in hours, and at a predefined temperature T, expressed in ° C., such that 0.3≤t≤6.0, and 1140+50 Log(6/t)−580 x≤T≤1245+50 Log(6/t)−580 x.

Process for preparing a positive electrode 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 lithium metal oxide powder for a cathode material in a rechargeable battery comprises a core and a surface layer. The surface layer is delimited by an outer and an inner interface. The inner interface is in contact with the core. The cathode material has a layered crystal structure comprising the elements Li, M, and oxygen. M has the formula M=(Ni(NiMn)Co)A, with 0.15≤x≤0.30, 0.20≤z≤0.55, x+y+z=1 and 0<k≤0.1. The Li content is stoichiometrically controlled with a molar ratio 0.95≤Li:M≤1.10. A is at least one dopant and comprises Al. The core at the inner interface has an Al content of 0.3-3 mol %. The surface layer comprises an intimate mixture of Ni, Co, Mn, LiF and AlOdetermined by XPS. The surface layer has a Mn content that decreases from the Mn content at the inner interface to less than 50% of the Mn content at the outer interface.

Lithium nickel-manganese-cobalt oxide cathode powders for high voltage lithium-ion batteries

A bimodal lithium transition metal oxide based powder mixture comprises a first and a second lithium transition metal oxide based powder. The first powder comprises particles of a material A comprising the elements Li, a transition metal based composition M and oxygen. The first powder has a particle size distribution characterized by a (D90−D10)/D50≤1.5. The second powder comprises a material B having single crystal particles, said particles having a general formula LiN'O, wherein −0.03≤b≤0.10, and N′=NiM″CoE, wherein 0.30≤x≤0.92, 0.05≤y≤0.40, 0.05≤z≤0.40 and 0≤d≤0.10, wherein M″ is one or both of Mn or Al, and E is a dopant different from M″. The first powder has an average particle size D50 between 10 and 40 μm. The second powder has a D50 between 2 and 4.5 μm. The weight ratio of the second powder in the mixture is between 15 and 60 wt %.

Positive electrode material for rechargeable lithium ion batteries

A positive electrode active material powder suitable for lithium-ion batteries, comprising lithium transition metal-based oxide particles comprising a core and a surface layer, said surface layer being on top of said core, said particles comprising the elements: Li, a metal M' and oxygen, wherein the metal M′ has a formula: M′=(NiMnCo)A, wherein A is a dopant, 0.55≤z≤0.89, 0.05≤y≤0.25, 0.05≤x≤0.25, x+y+z+k=1, and k≤0.01, said positive electrode active material powder having a mean particle size D50 ranging from 3 μm to 15 μm and a surface layer thickness ranging from 5 nm to 200 nm. The surface layer comprises aluminum in a content superior or equal to 0.04 wt % and inferior or equal to 0.15 wt % relative to the total weight of the positive electrode active material.

As a positive electrode active material for rechargeable lithium ion batteries

A method for preparing a powderous positive electrode material comprising single crystal monolithic particles and having a general formula Li((Ni(NiMn)Co)A)O, wherein A is a dopant, −0.03≤a≤0.06, 0.05≤x≤0.35, 0.10≤z≤0.95, x+y+z=1 and k≤0.05 is described. The method comprises providing a mixture comprising a Ni- and Co- bearing precursor and a Li bearing precursor, subjecting the mixture to a multiple step sintering process whereby in the final sintering step a sintered lithiated intermediate material is obtained comprising agglomerated primary particles having a primary particle size distribution with a D50 between 2.0 and 8.0 μm, subjecting the lithiated intermediate material to a wet ball milling step to deagglomerate the agglomerated primary particles and obtain a slurry comprising deagglomerated primary particles, separating the deagglomerated primary particles from the slurry, and heat treating the deagglomerated primary particles at a temperature between 300° C. and at least 20° C. below the temperature in the final sintering step.

Methods for preparing positive electrode material for rechargeable lithium ion batteries

A positive electrode composition for a rechargeable battery, the composition comprising a first and a second powderous lithium metal oxide, the first lithium metal oxide comprising either one or more of Ni, Mn and Co, the second lithium metal oxide powder having either:

Positive electrode for lithium ion battery

A powderous positive electrode material for lithium ion batteries, comprising crystalline lithium transition metal-based oxide particles having a general formula Li((Ni(NiMn)Co)A)O, wherein A is a dopant, −0.030≤a≤0.025, 0.10≤x≤0.40, 0.25≤z≤0.52, x+y+z=1 and k≤0.01, wherein the crystalline powder has a crystallite size less than 33 nm as determined by the Scherrer equation based on the peak of the (104) plane obtained from the X-ray diffraction pattern using a Cu K α radiation source, and wherein the molar ratio MR(Ni) of Ni versus the total transition metal content in a cross section of a particle is higher in the surface area than in the center area of the particle, as determined by EDS analysis.

Lithium transition metal composite oxide as a positive electrode active material for rechargeable lithium secondary batteries

A bimodal lithium transition metal oxide based powder mixture comprising a first and a second lithium transition metal oxide based powder. The first powder comprises a material A having a layered crystal structure comprising the elements Li, a transition metal based composition M and oxygen and has a particle size distribution with a span <1.0. The second powder has a monolithic morphology and a general formula LiN′O, wherein −0.03≤b≤0.10, and N′=NiM″CoE, wherein 0.30≤x≤0.92, 0.05≤y≤0.40, 0.05≤z≤0.40 and 0≤d≤0.10, with M″ being one or both of Mn or Al, and E being a dopant different from M″. The first powder has an average particle size D50 between 10 and 40 μm. The second powder has an average particle size D50 between 2 and 4 μm. The weight ratio of the second powder in the bimodal mixture is between 20 and 60 wt %.

A bimodal lithium transition metal oxide based powder mixture comprises a first and a second lithium transition metal oxide based powder. The first powder comprises particles of a material A comprising the elements Li, a transition metal based composition M and oxygen. The first powder has a particle size distribution characterized by a (D90−D10)/D50<1.0. The second powder comprises a material B having single crystal particles, said particles having a general formula LiN′O, wherein −0.03≤b≤0.10, and N′=NiM″CoE, wherein 0.30≤x≤0.92, 0.05≤y≤0.40, 0.05≤z≤0.40 and 0≤d≤0.10, wherein M″ is one or both of Mn or Al, and E is a dopant different from M″. The first powder has an average particle size D50 between 10 and 40 μm. The second powder has a D50 between 2 and 4 μm. The weight ratio of the second powder in the mixture is between 15 and 60 wt %.

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

A lithium secondary cell having an operating voltage &#x2265;4.35V, comprising a cathode comprising a doped LiCoOactive material, an anode comprising graphite, and an electrolyte comprising a carbonate-based solvent, a lithium salt and both a succinonitrile (SN) and a lithium bis(oxalato)borate (LiBOB) additive wherein during the discharge at 45&#xb0; C. from a state of charge (SOC) of 100% at 4.5V to a SOC of 0 at 3V at a C/10 rate the difference of the SOC at 4.42V and 4.35V is at least 7% but less than 14%, and wherein the active material is doped by at least 0.5 mole % of either one or more of Mn, Mg and Ti.

Lithium battery containing cathode material and electrolyte additives for high voltage application

Growing community of inventors

Chungcheongnam-do, South Korea

Jens M Paulsen