Samsung Electronics Co., Ltd.

Umicore

Umicore Korea, Ltd.

Samsung Display Co., Ltd.

Lg Energy Solution, Ltd.

Lg Chem, Ltd

Korea Taiyo Yuden Co., Ltd.

Song-Yi Han

Jens M Paulsen

Moon-Shik Kang

Inn-Sung Lee

JiHye Kim

Xin Xia

Randy De Palma

Areum Park

Kyung-Tae Lee

Jae Ho Kim

Young Jun Cho

Song-Taek Oh

Min-Soo Choi

Jae Min Kim

Jin-Taek Hong

Shinichi Kumakura

Byung-kyou Min

Young-Geun Choi

Kang-hyun Baek

Ji-Seong Doh

Seong Hun Jang

Young Kyou Shin

Yun Ji Choi

Choong-Ho Lee

Seong-Sik Choi

Hyeon-Yong Jang

Yoon-Jung Bae

Dae-Soo Kim

Jongwook Lee

Yun-Gun Lee

Tatsuhisa Shimura

Young-Deok Kim

Du-Hwan Chung

Ji-Eun Lee

Seung Chul Lee

Changwoo Oh

Jing Zhang

Osamu Sengoku

Seung-Young Choi

TaeHyeon Yang

Jae-Eun Um

Won-hyoung Kang

Seonah Nam

HyeJeong Yang

Kyun-Ho Kim

Sung-Kyu Park

Hyungsuk Lee

Ju-Sung Cho

Ji-Hye Kim

Donggu Yi

Jihye Kim

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 semiconductor design automation system comprises a simulator configured to generate simulation data, a recovery module configured to correct a sampling error of the simulation data to generate recovery simulation data, a hardware data module configured to generate real data, a preprocessing module configured to preprocess the real data to generate preprocessed real data, a database configured to store the recovery simulation data and the preprocessed real data, a first graphic user interface including an automatic simulation generator configured to generate a machine learning model of the recovery simulation data and the preprocessed real data and generate predicted real data therefrom, and a second graphic user interface including a visualization unit configured to generate a visualized virtualization process result from the machine learning model.

Semiconductor design automation system and computing system including the same

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 terminal case configured to effectively estimate the life or degradation of a secondary battery as the secondary battery degrades includes a housing that can be coupled to the secondary battery, a plurality of normal mode terminals disposed on a first surface of the housing and a plurality of measurement mode terminals disposed on a second surface of the housing. The housing is configured to be coupled to the secondary battery with either the first surface or the second surface facing the secondary battery, such as by rotation of the housing about an axis passing through a center of two surfaces of the housing that are parallel to one another and perpendicular to both the first and second surfaces of the housing.

Terminal case having the improved function of estimating state of secondary battery

A secondary battery configured to effectively estimate the life or degradation of the secondary battery as the secondary battery degrades includes a packaging material, an electrode assembly, a first electrode lead, a second electrode lead, a first measuring lead, and a second measuring lead. The electrode assembly includes a stack having a plurality of first electrode plates at respective first locations within the stack and a plurality of second electrode plates at respective second locations within the stack, the first and second locations alternating with one another and having a separator interposed between each of the first and second locations. The electrode assembly further includes a first measuring plate and a second measuring plate having the same polarity as the first electrode plates and located at at least one of the first locations within the stack.

Secondary battery and battery pack including the same

An apparatus for estimating a state of a secondary battery, connectable to a positive electrode lead, a negative electrode lead, a first measuring lead, and a second measuring lead in the secondary battery, including: a terminal case including: inner terminals contactable with the positive electrode lead, the negative electrode lead, the first measuring lead, or the second measuring lead on a first surface of the terminal case, and outer terminals respectively electrically connectable to the inner terminals on a second surface facing the first surface of the terminal case, a voltage measuring unit electrically connected to at least two of the outer terminals, and measuring a potential difference between the first and the second measuring lead, and a control unit estimating a state of health of the secondary battery based on the potential difference between the first measuring lead and the second measuring lead.

Apparatus for estimating state of secondary battery, and battery pack including the same

A battery management apparatus, including: a sensing unit configured to generate battery information indicating a battery voltage and current; and a control unit configured to: determine a differential voltage curve based on a history of the battery information from the sensing unit during a sensing period while the battery is being charged with a first current rate current, the differential voltage curve indicating a relationship between a remaining capacity of the battery and a ratio of a voltage change amount of the battery to a remaining capacity change amount of the battery during the sensing period; detect feature points from the differential voltage curve; determine whether stabilization for an electrode material of the battery is required, based on a feature value of each of the feature points; and output a control signal to induce the battery to be discharged with a smaller second current rate current, when stabilization is required.

Battery management apparatus, battery management method, battery pack and electric vehicle

A method for preparing a N(M)C-based positive electrode materials according to the present invention comprises the following steps: &#x2014;Precipitation of a metal (at least Ni&#x2014; and Co&#x2014;, preferably comprising Mn&#x2014;) bearing precursor (MBP), &#x2014;Fractionation of the MBP in a first (A) fraction and at least one second (B) fraction, &#x2014;Lithiation of each of the first and second fraction, wherein the A fraction is converted into a first polycrystalline lithium transition metal oxide-based powder and the B fraction(s) is(are) converted into a second lithium transition metal oxide-based powder and, and &#x2014;Mixing the first and second monolithic lithium transition metal oxide-based powder to obtain the N(M)C-based positive electrode material.

Positive electrode material for rechargeable lithium ion batteries and methods of making thereof

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.

The present disclosure relates to an electrode for an electrochemical device and a method for manufacturing the same. More particularly, the present disclosure relates to an electrode having a small difference in porosity along the thickness direction of the electrode, and a method for manufacturing the same.

Electrode for electrochemical device and method for manufacturing the same

A lithium metal oxide powder for a cathode material in a rechargeable battery, consisting of a core and a surface layer, the surface layer being delimited by an outer and an inner interface, the inner interface being in contact with the core, 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 0.15&#x2264;x&#x2264;0.30, 0.20&#x2264;z&#x2264;0.55, x+y+z=1 and 0&#x3c;k&#x2264;0.1, wherein the Li content is stoichiometrically controlled with a molar ratio 0.95&#x2264;Li:M&#x2264;1.10; wherein A is at least one dopant and comprises Al; wherein the core has an Al content of 0.3-3 mol % and a F content of less than 0.05 mol %; and wherein the surface layer has an Al content that increases continuously from the Al content of the core at the inner interface to at least 10 mol % at the outer interface, and a F content that increases continuously from less than 0.05 mol % at the inner interface to at least 3 mol % at the outer interface, the Al and F contents in the surface layer being determined by XPS. The surface layer may also have a Mn content that decreases continuously from the Mn content of the core at the inner interface, to less than 50% of the Mn content of the core at the outer interface.

Disclosed are a secondary battery and a life prediction apparatus thereof. The life prediction apparatus predicts a life of a secondary battery including an electrode assembly, a positive electrode tab, a negative electrode tab, a case and a plurality of reference electrodes. In particular, the life prediction apparatus predicts a residual life of the secondary battery by detecting impedances of different regions of the secondary battery by using the plurality of reference electrodes.

Secondary battery and life prediction apparatus thereof

This invention discloses a lithium metal oxide powder for a cathode material in a rechargeable battery, consisting of 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 0.15&#x2264;x&#x2264;0.30, 0.20&#x2264;z&#x2264;0.55, x+y+z=1 and 0&#x2264;k&#x2264;0.1, wherein A is a dopant, wherein the Li content is stoichiometrically controlled with a molar ratio 0.95&#x2264;Li:M&#x2264;1.10; and wherein the surface layer comprises the elements Li, M' and oxygen, wherein M&#x2032; has the formula M&#x2032;=(Ni(NiMn)Co)A, with x&#x2032;+y&#x2032;+z&#x2032;=1 and 0&#x2264;k&#x2032;&#x2264;0.1, and wherein y&#x2032;/(y&#x2032;+2z&#x2032;)&#x2265;1.1*[y/(y+2z)]. The surface layer may also comprise at least 3 mol % Al, the Al content in the surface layerbeing determined by XPS.

Lithium metal oxide cathode powders for high voltage lithium-ion batteries

Growing community of inventors

Yongin-si, South Korea

Song-Yi Han