Umicore

Umicore Korea, Ltd.

Jing Zhang

Jens M Paulsen

Xin Xia

Maxime Blangero

Wenlong Yang

Song-Yi Han

Jeffrey R Dahn

JiHye Kim

Shinichi Kumakura

JinDoo Oh

Donggun Park

Gyeong-Ok Kim

DaeHyun Kim

Rajalakshmi Senthil Arumugam

Jeong-Rae Kim

Jin-Doo Oh

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

A rechargeable lithium ion battery including: a positive electrode including coated particles, wherein each particle includes a core and a coating disposed thereon, wherein the core consists of Li, M, and O, and the coating includes Li, M, O, and AI2O3; wherein: M is (Ni(NiMn)Co)A; 0.15&#x2264;z&#x2264;0.50; 0.17&#x2264;x&#x2264;0.30; 0.35&#x2264;y&#x2264;0.75; 0&#x3c;k&#x3c;0.1; x+y+z=1; and A includes Al and optionally at least one additional metal dopant selected from Mg, Zr, W, Ti, Cr, V, Nb, B, and Ca, and combinations thereof; and wherein the Li and M are present in the core in a molar ratio of Li to M of at least 0.95 and no greater than 1.10; a negative electrode; and a nonaqueous liquid electrolyte including: a lithium salt; a nonaqueous solvent; and an additive mixture including: prop-1-ene-1,3-sultone; at least one compound selected from tris(trimethylsilyl)phosphite, tris(trimethylsilyl)phosphate, tri-allyl phosphate, and combinations thereof; and at least one compound selected from methylene methanedisulfonate, 1,3,2-dioxathiolane-2,2-dioxide, and combinations thereof.

Lithium ion batteries, electronic devices, and methods

A positive electrode for a rechargeable battery, comprising a lithium metal oxide powder having a layered crystal structure and having the formula LiTmHmO, with 3&#x2264;x&#x2264;4.8, 0.60&#x2264;y&#x2264;2.0, 0.60&#x2264;z&#x2264;2.0, and x+y+z=6, wherein Tm is one or more transition metals of the group consisting of Mn, Fe, Co, Ni, and Cr; wherein Hm is one or more metals of the group consisting of Zr, Nb, Mo and W. The lithium metal oxide powder may comprise dopants and have the formula LiTmHmM&#x2033;O&#x2014; &#x3b4;A&#x3b4;, wherein A is either one or more elements of the group consisting of F, S or N; and M&#x2033; is either one or more metal of the group consisting of Ca, Sr, Y, La, Ce and Zr, with either &#x3b4;&#x3e;0 or m&#x3e;0, &#x3b4;&#x2264;0.05, m&#x2264;0.05 and x+y+z+m=6.

Cathode material for a lithium-ion rechargeable battery

A lithium secondary cell having an operating voltage &#x2265;4.35 sV, comprising a cathode comprising a doped L1CoOactive 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.

A rechargeable lithium ion battery comprising a positive electrode, a negative electrode and an electrolyte, the positive electrode comprising a lithium nickel manganese cobalt oxide-based powder with particles comprising a core and a surface layer, the core having a layered crystal structure comprising the elements Li, M and oxygen, wherein M has the formula M=(Ni(NiMn)Co)A, with 0.13&#x2264;x&#x2264;0.30, 0.20&#x2264;z&#x2264;0.55, x+y+z=1 and 0&#x3c;k&#x2264;0.1, wherein A is at least one dopant and comprises Al, the lithium nickel manganese cobalt oxide-based powder having a molar ratio 0.95&#x2264;Li:M&#x2264;0.10, wherein the surface layer consists of a mixture of elements of the core Li, M and O, and alumina, and wherein the electrolyte comprises the additive lithium difluorophosphate.

Lithium ion battery for automotive application

A crystalline precursor compound is described 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)y Co)A)O, wherein x+y+z=1, 0.1&#x2264;x&#x2264;0.4, 0.25&#x2264;z&#x2264;0.55, A is a dopant, 0&#x2264;k&#x2264;0.1, and 0.04&#x2264;a&#x2264;0.50, wherein the precursor has a crystalline size L expressed in nm, with 77&#x2212;(67*z)&#x2264;L&#x2264;97&#x2212;(67*z). Also a method is described for manufacturing a positive electrode material 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;0.55, A is a dopant, 0&#x2264;k&#x2264;0.1, and 0.01&#x2264;a'&#x2264;0.10 by sintering the crystalline precursor compound in an oxidizing atmosphere at a temperature T between 800 and 1000&#xb0; C., for a time t between 6 and 36 hrs.

Precursor and method for preparing Ni based Li transition metal oxide cathodes for rechargeable batteries

A crystalline precursor compound is described 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)M')A)O, wherein x+y+z=1, 0&#x3c;x&#x2264;0.2, 0.55&#x3c;z&#x2264;0.90, M&#x2032; is either one or both of Co and Al, A is a dopant, 0&#x2264;k&#x2264;0.1, and 0.05&#x2264;a&#x2264;0.40, wherein the precursor an integrated intensity ratio I003/I104&#x3c;1, wherein I003 and I104 are the peak intensities of the Bragg peaks (003) and (104) of the XRD pattern of the crystalline precursor compound. Also a method is described for manufacturing a positive electrode material having a general formula LiMO, with M=(Ni(NiMn)M&#x2032;)A), wherein x+y+z=1, 0&#x3c;x&#x2264;0.2, 0.55&#x3c;z&#x2264;0.90, M&#x2032; is either one or both of Co and Al, A is a dopant, 0&#x2264;k&#x2264;0.1 and 0.01&#x3c;a&#x2032;&#x3c;0.10 by sintering the crystalline precursor compound in an oxidizing CO-free atmosphere at a temperature T between 750 and 950&#xb0; C., for a time t between 6 and 36 hrs.

Precursor and method for preparing Li transition metal oxide cathodes for rechargeable batteries

A lithium transition metal oxide powder for a positive electrode material in a solid-state lithium ion battery, the powder consisting of particles having a core and a surface layer consisting of an inner and an outer layer, wherein the powder has a D50 between 35 and 60 &#x3bc;m, wherein the core has the general formula LiCoOwith 0.99&#x3c;x&#x3c;1.04 and wherein the inner surface layer comprises LiNiMnCoO, with 0&#x3c;y&#x3c;1, 0.3&#x3c;a&#x3c;0.8 and 0&#x3c;b&#x3c;0.3; and wherein the outer surface layer consists of discrete monolithic sub-micron sized particles having the general formula Li(NiMnCo)O, with 0&#x2264;z&#x2264;0.05, 0&#x3c;m&#x2264;0.50 and 0&#x3c;n&#x2264;0.70, preferably 0&#x3c;n&#x2264;0.30.10

Cathode material for rechargeable solid state lithium ion battery

An olivine cathode material having the formula LiFeMnD(PO), wherein a, c, x, y and z represent molar amounts, wherein D=Mg and/or Cr, wherein y represent the amount of Mg and z represents the amount of Cr, wherein 1.04&#x3c;a&#x3c;1.15; wherein 0.97&#x3c;(2*c/(a+1))&#x3c;1.07; wherein 0.6&#x3c;x&#x3c;1&#x2212;y&#x2212;z; wherein 0&#x3c;y+z&#x3c;0.1. These material show improved cathode properties in lithium based rechargeable batteries.

Growing community of inventors

Cheonan, South Korea

Jing Zhang