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BATTERY PROCESSING METHOD AND BATTERY PROCESSING SYSTEM

NºPublicación:  US20260106255A1 16/04/2026
Solicitante: 
MAZDA MOTOR [JP]
US_20260106255_A1

Resumen de: US20260106255A1

0000 A battery processing method for processing a lithium-ion battery including a positive electrode material, a negative electrode material, and an electrolytic solution and configured by laminating the positive electrode material and the negative electrode material in a lamination direction includes a lithium deposition step of charging the lithium-ion battery by increasing a pressing force in the lamination direction on a central portion in a plane perpendicular to the lamination direction in comparison with remaining portions to deposit lithium on the negative electrode material.

SECONDARY BATTERY INSPECTION APPARATUS, SECONDARY BATTERY INSPECTION METHOD, AND SECONDARY BATTERY MANUFACTURING METHOD

NºPublicación:  US20260106238A1 16/04/2026
Solicitante: 
SAMSUNG SDI CO LTD [KR]
US_20260106238_A1

Resumen de: US20260106238A1

A secondary battery inspection apparatus includes a first support member configured to support an electrode tab bundle in which a plurality of electrode tabs extending outward from an electrode assembly are stacked from below, a displacement sensor configured to calculate a measurement value indicating a thickness of the electrode tab bundle by pressing the electrode tab bundle with a force from above, and a processor configured to determine whether the electrode tab bundle is normal based on the measurement value calculated by the displacement sensor.

ALL-SOLID-STATE BATTERY

NºPublicación:  US20260106158A1 16/04/2026
Solicitante: 
SAMSUNG SDI CO LTD [KR]
US_20260106158_A1

Resumen de: US20260106158A1

Disclosed are negative electrodes and all-solid-state batteries. The negative electrode includes a negative electrode current collector, a first negative electrode coating layer on the negative electrode current collector and including a first metal and a first carbon, and a second negative electrode coating layer on the first negative electrode coating layer and including a second metal and a second carbon. ΔG1 is given as Gibbs free energy of a chemical reaction at 250° C. between the first metal and molten lithium. ΔG2 is given as Gibbs free energy of a chemical reaction at 250° C. between the second metal and molten lithium. ΔG1 and ΔG2 satisfies the relationship of ΔG1<ΔG2. A ratio of a thickness of the second negative electrode coating layer to a thickness of the first negative electrode coating layer is about 0.6 to about 1.4.

RECOVERY OF MATERIALS FROM LITHIUM IRON PHOSPHATE BATTERY WASTE

NºPublicación:  WO2026080163A1 16/04/2026
Solicitante: 
ASCEND ELEMENTS INC [US]
WO_2026080163_A1

Resumen de: WO2026080163A1

Methods are provided for forming iron phosphate. In a first stage, heat treating lithium iron phosphate black mass and selectively leaching lithium from the heat treated lithium iron phosphate black mass with an oxidative leaching solution forms a semi-delithiated iron phosphate black mass. In a second stage, the semi-delithiated iron phosphate black mass and a pre-leaching solution comprising dilute acid and an oxidizing agent are mixed, and in a third stage the remaining iron phosphate in the solid phase and an iron phosphate leaching solution are mixed to form a leachate comprising iron phosphate.

Verfahren zur Herstellung einer Referenzelektrode, Akkumulator und System

NºPublicación:  DE102024209970A1 16/04/2026
Solicitante: 
FORSCHUNGSZENTRUM JUELICH GMBH [DE]
DE_102024209970_PA

Resumen de: DE102024209970A1

Die Erfindung betrifft ein Verfahren zur Herstellung einer Referenzelektrode (1), wobei eine Aufschlämmung (6) mit aktivem Material, elektrisch leitendem Material und Bindemittel zur Herstellung der Elektrode wenigstens 12 Stunden lang getrocknet wird.Die Erfindung betrifft einen Akkumulator mit einer Anode (16), einer Kathode (17), einem Elektrolyten und einer Referenzelektrode (1), wobei die Referenzelektrode (1) zylinderförmig ist und aus aktivem Material, elektrisch leitendem Material und Bindemittel gebildet ist und im Inneren einen aus Metall bestehenden Draht (2) als Stromkollektor umfasst.Die Erfindung betrifft ein System mit dem Akkumulator und einem Batteriemanagementsystem, das in Abhängigkeit von der Referenzelektrode steuert oder überwacht.

METHOD AND APPARATUS FOR INSPECTING COATING STATUS OF PUNCHING OIL USING VISION

NºPublicación:  US20260105586A1 16/04/2026
Solicitante: 
SAMSUNG SDI CO LTD [KR]
US_20260105586_A1

Resumen de: US20260105586A1

0000 An apparatus for inspecting a coating status of punching oil includes a first sprayer, a first inspector, and a second sprayer, and a control unit. The first sprayer sprays punching oil onto an electrode plate according to a first spray direction and a first spray amount setting value, the first inspector acquires a first image of the electrode plate by using a first camera, the control unit determines whether or not an uncoated area of the electrode plate is present based on the first image, and when the uncoated area is determined to present on the electrode plate, the control unit sets a second spray direction and a second spray amount setting value to be applied by the second sprayer, and the second sprayer sprays punching oil onto the electrode plate according to the second spray direction and the second spray amount setting value.

Inspektionsvorrichtung zum bildsensorbasierten Inspizieren eines Objekts

NºPublicación:  DE102024130064A1 16/04/2026
Solicitante: 
MB AUTOMATION GMBH & CO KG [DE]
DE_102024130064_PA

Resumen de: DE102024130064A1

Die Erfindung betrifft eine Inspektionsvorrichtung zum bildsensorbasierten Inspizieren eines Objekts (3) wobei die Inspektionsvorrichtung (1) aufweist:eine Transporteinrichtung zum Transport eines zu inspizierenden physischen Objekts (3) entlang eines Transportpfads; eine Bildsensorik (6) mit zumindest einem Bildsensor (35) zum zumindest abschnittsweisen bildsensorischen Abtasten des Objekts (3) entlang einer Betrachtungsrichtung (18) während das Objekt (3) durch die Transporteinrichtung entlang des Transportpfads kontinuierlich relativ zur Bildsensorik (6) bewegt wird; und eine Beleuchtungseinrichtung zum Beleuchten einer jeweils zu inspizierenden Oberfläche des Objekts (3) in einem durch die Bildsensorik (6) erfassbaren Wellenlängenbereich, sodass die Bildsensorik (6) die Oberfläche in einem derart beleuchtenden Oberflächenbereich zumindest abschnittsweise bildsensorisch erfassen kann. Die Bildsensorik (6) weist eine Anzahl N, mit N ≥ 1, von einzeln oder kumulativ als Kontakt-Bildsensor, CIS, ausgebildeten digitalen Zeilenkameras (7) mit jeweils einer Mehrzahl von in einer Zeile angeordneten und jeweils eine Linse (28) aufweisenden Kamerapixeln (27) auf und die Zeilen der N Zeilenkameras (7) verlaufen jeweils quer zum Transportpfad. Die Beleuchtungseinrichtung ist konfiguriert, zum Beleuchten der zu inspizierenden Oberfläche des Objekts (3) Licht zu erzeugen und es entlang eines Strahlengangs (24) auszurichten, dessen Richtung mit der Betrachtungsrichtung (18) zusam

ELECTRONIC DEVICE AND NOTIFICATION PROVISION METHOD THEREFOR

NºPublicación:  WO2026079643A1 16/04/2026
Solicitante: 
LG ENERGY SOLUTION LTD [KR]
\uC8FC\uC2DD\uD68C\uC0AC \uC5D8\uC9C0\uC5D0\uB108\uC9C0\uC194\uB8E8\uC158
WO_2026079643_A1

Resumen de: WO2026079643A1

According to an embodiment disclosed in the present document, an electronic device may comprise: a communication circuit; a memory for storing one or more instructions; and a processor, wherein when executed, the one or more instructions cause the processor to: identify first information related to a battery pack, the first information being obtained from a first device provided in a vehicle; identify second information related to the vehicle, the second information being obtained from a second device provided in the vehicle; provide a first notification related to the state of the battery pack to a user's terminal on the basis of the first information; and when the first notification is provided, provide a second notification related to the state of the battery pack to the user's terminal on the basis of the second information.

LITHIUM SECONDARY BATTERY

NºPublicación:  US20260106212A1 16/04/2026
Solicitante: 
SK ON CO LTD [KR]
US_20260106212_A1

Resumen de: US20260106212A1

A lithium secondary battery includes a cathode, an anode and non-aqueous electrolyte solution. The cathode includes a cathode active material layer that includes a first cathode active material including lithium metal phosphate particles, and a second cathode active material including lithium transition metal oxide particles. The anode faces the cathode. The non-aqueous electrolyte solution includes an organic solvent and a lithium salt. A weight ratio of the first cathode active material relative to the second cathode active material in the cathode active material layer is in a range from 1.5 to 9. A concentration of the lithium salt in the non-aqueous electrolyte solution exceeds 1 M.

ENERGY STORAGE SYSTEM

NºPublicación:  US20260106299A1 16/04/2026
Solicitante: 
SAMSUNG SDI CO LTD [KR]
US_20260106299_A1

Resumen de: US20260106299A1

An energy storage system includes a rack frame, a rack tray which is obliquely installed in the rack frame and on which a battery module is seated, and a position fixer configured to support the battery module such that a position of the battery module is fixed.

BATTERY MODULE

NºPublicación:  US20260106269A1 16/04/2026
Solicitante: 
SAMSUNG SDI CO LTD [KR]
US_20260106269_A1

Resumen de: US20260106269A1

Provided is a battery module including a plurality of battery cells positioned side by side along a first direction with main surfaces thereof facing each other, each battery cell including a lower vent, an insulation layer covering the lower vents of the plurality of battery cells, and a lower sheet located under of the insulation layer, wherein the lower sheet includes a first adhesive layer attached to the insulation layer and second adhesive layers located on each of opposite sides of the first adhesive layer and attached to lower surfaces of the plurality of battery cells, wherein the second adhesive layers are positioned spaced apart from the first adhesive layer.

METHOD FOR PREPARING POSITIVE ELECTRODE ACTIVE MATERIALS, POSITIVE ELECTRODE ACTIVE MATERIALS, POSITIVE ELECTRODES, AND RECHARGEABLE LITHIUM BATTERIES

NºPublicación:  US20260103397A1 16/04/2026
Solicitante: 
SAMSUNG SDI CO LTD [KR]
US_20260103397_A1

Resumen de: US20260103397A1

A method for preparing a positive electrode active material may include (i) preparing core particles including a lithium nickel-based composite oxide; (ii) adding the core particles to an aqueous (e.g., water-soluble) solvent and mixing them to prepare a first mixed solution, and adjusting pH of the first mixed solution to a range between about 5.5 and about 7.5; (iii) adding an aluminum raw material to the first mixed solution and mixing them to prepare a second mixed solution; and (iv) removing an aqueous (e.g., water-soluble) solvent from the second mixed solution to prepare a dried product. The positive electrode active material and the rechargeable lithium battery that are prepared by using the method for preparing the positive electrode active material may exhibit high initial charge/discharge capacity and high efficiency even under high-voltage driving conditions and may implement long cycle-life characteristics under high-voltage and high-temperature conditions.

Batteriemodul

NºPublicación:  DE102025135710A1 16/04/2026
Solicitante: 
TOYOTA MOTOR CO LTD [JP]
DE_102025135710_PA

Resumen de: DE102025135710A1

Ein Batteriemodul (1) umfasst: ein Außengehäuse (12), das so konfiguriert ist, dass es einen Energiespeichermodulstapel (11) aufnehmen kann, wobei das Außengehäuse (12) einen Stromabnehmer (121) umfasst, der so konfiguriert ist, dass er Strom aus dem Energiespeichermodulstapel (11) leitet, und einen laminierten Dichtungsabschnitt (122), der so konfiguriert ist, dass er das Außengehäuse (12) mit einem Außengehäuse (12) eines anderen Batteriemoduls (1) verbindet. Der Stromabnehmer (121) und der laminierte Dichtungsabschnitt (122) sind mit einem Dichtungsmaterial (123, 124, 127, 128) verbunden, und das Dichtungsmaterial (123, 127) ist diskontinuierlich an einem Umfangsrand des Stromabnehmers (121) angeordnet.

NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

NºPublicación:  WO2026079281A1 16/04/2026
Solicitante: 
PANASONIC INTELLECTUAL PROPERTY MAN CO LTD [JP]
\u30D1\u30CA\u30BD\u30CB\u30C3\u30AF\uFF29\uFF30\u30DE\u30CD\u30B8\u30E1\u30F3\u30C8\u682A\u5F0F\u4F1A\u793E
WO_2026079281_A1

Resumen de: WO2026079281A1

This non-aqueous electrolyte secondary battery includes: an electrode body in which a first electrode (11) and a second electrode that are band-shaped and have different polarities are wound with a separator interposed therebetween; and an exterior body that accommodates the electrode body. The first electrode (11) has a core body (30) and a mixture layer (32) formed on a surface of the core body (30). An exposed portion (31) where the core body (30) is exposed is formed on a surface of the first electrode (11), and an electrode tab (19) is joined to the exposed portion (31). In the electrode tab (19), at least a corner portion between a tip surface (19a) in the winding axis direction of the electrode body overlapping the exposed portion (31) and a joining surface joined to the exposed portion (31) is chamfered.

Bauteil, Bauteilverbund und Verfahren zur Herstellung eines Bauteilverbunds

NºPublicación:  DE102025000920A1 16/04/2026
Solicitante: 
MERCEDES BENZ GROUP AG [DE]
DE_102025000920_PA

Resumen de: DE102025000920A1

Die Erfindung betrifft ein Bauteil (1), ausgebildet zu einer Verschweißung mit zumindest einem weiteren Bauteil (2.1 bis 2.k), mit zumindest einem zu einer Verschweißung mit dem zumindest einen weiteren Bauteil (2.1 bis 2.k) in einem Überlappstoß oder Parallelstoß ausgebildeten Schweißabschnitt (4.1 bis 4.n), wobei der Schweißabschnitt (4.1 bis 4.n) eine zur Anlage an dem zumindest einen weiteren Bauteil (2.1 bis 2.k) ausgebildete Fügefläche (A1 bis An) aufweist. Erfindungsgemäß weist das Bauteil (1) mehrere Halteabschnitte (5.1 bis 5.m) auf, wobei die Halteabschnitte (5.1 bis 5.m) an gegenüberliegenden, sich an einen Rand der Fügefläche (A1 bis An) anschließenden Seitenflächen des zumindest einen Schweißabschnitts (4.1 bis 4.n) angeordnet sind, zu einer indirekten und/oder direkten mechanischen Kopplung mit zumindest einem Niederhalter einer Schweißvorrichtung und zu einer Verformung mittels des zumindest einen Niederhalters ausgebildet sind und aus einem Material gebildet sind, welches mit geringerem Kraftaufwand verformbar ist, als ein Material des Schweißabschnitts (4.1 bis 4.n). Die Erfindung betrifft weiterhin einen Bauteilverbund (3) und ein Verfahren zur Herstellung eines Bauteilverbunds (3).

COMPOSITION SET FOR SECONDARY BATTERY ELECTRODE, FIRST COMPOSITION, SECOND COMPOSITION, COMPOSITION 1 FOR SECONDARY BATTERY ELECTRODE, COMPOSITION 2 FOR SECONDARY BATTERY ELECTRODE, COMPOSITION 3 FOR SECONDARY BATTERY ELECTRODE, SECONDARY BATTERY AND ELECTRODE FOR SECONDARY BATTERY, AND METHOD FOR MANUFACTURING COMPOSITION FOR SECONDARY BATTERY ELECTRODE

NºPublicación:  WO2026079394A1 16/04/2026
Solicitante: 
ZEON CORP [JP]
\u65E5\u672C\u30BC\u30AA\u30F3\u682A\u5F0F\u4F1A\u793E
WO_2026079394_A1

Resumen de: WO2026079394A1

The purpose of the present invention is to provide a composition set for a secondary battery electrode with which it is possible to form a secondary battery electrode that can cause a secondary battery to exhibit excellent cycle characteristics. A composition set for a secondary battery electrode according to the present invention comprises a first composition that contains carbon nanotubes 1, and a second composition that contains carbon nanotubes 2. The G/D ratio of the carbon nanotubes 1 is 4 or less, and the G/D ratio of the carbon nanotubes 2 is greater than the G/D ratio of the carbon nanotubes 1 by 3 or more.

COSOLVENT SYSTEM FOR IMPROVED ELECTROLYTES IN BATTERIES

NºPublicación:  WO2026080214A1 16/04/2026
Solicitante: 
ELEMENTIUM MAT INC [US]
WO_2026080214_A1

Resumen de: WO2026080214A1

Herein discussed is an electrochemical device comprising an anode, a cathode, and an electrolyte; wherein the electrolyte comprises at least one sulfonamide solvent and a cosolvent; wherein the viscosity of the cosolvent is at least two times lower than the viscosity of the sulfonamide solvent; wherein the cosolvent comprises a fluorinated ether, a non-fluorinated linear carbonate ester, a non-fluorinated sulfide, or combinations of any two or more thereof; and wherein the electrolyte comprises a salt substantially dissolved in the solvent or cosolvent or both; wherein the sulfonamide solvent has formula R1-SO2-N-R2R3 wherein R1 is selected from the group consisting of -F, -CF3, -N(CH3)2, and -NCH2CH3; and wherein each of R2 and R3 is independently selected from the group consisting of -H, -CH3, and -CH2CH3. Methods of making and using such devices are also discussed herein.

BATTERY ASSEMBLY INCLUDING PRISMATIC CELL CAN HAVING A MULTI-LAYER MICA VENT COVER

NºPublicación:  US20260106313A1 16/04/2026
Solicitante: 
GM GLOBAL TECH OPERATIONS LLC [US]
US_20260106313_A1

Resumen de: US20260106313A1

0000 A battery cell including a prismatic cell can housing includes a plurality of walls forming a cell stack receiving zone, one of the plurality of walls including an opening having a first dimension. A vent is positioned across the opening. The vent is configured to open when pressure within the cell stack receiving zone exceeds a predetermined pressure value. An intercell connect board (ICB) is arranged on the one of the plurality of walls. The ICB includes a port that aligns with the opening. A multi-layer vent cover is supported on the ICB. The multi-layer vent cover includes an inner layer supported on the ICB and an outer layer supported on the inner layer. The inner layer includes a first frangible cover and the outer layer including a second frangible cover that is larger than the first frangible cover.

IMPULSLADESYSTEM FÜR EIN LITHIUM-IONEN-BATTERIEPACK

NºPublicación:  DE102024136236A1 16/04/2026
Solicitante: 
GM GLOBAL TECH OPERATIONS LLC [US]
DE_102024136236_PA

Resumen de: DE102024136236A1

Ein Impulsladesystem für ein Lithium-Ionen-Batteriepack schließt ein oder mehrere Steuergeräte ein, die in elektronischer Kommunikation mit dem Lithium-Ionen-Batteriepack stehen. Das eine oder die mehreren Steuergeräte umfassen einen oder mehrere Prozessoren, die Anweisungen ausführen, um eine Plattierungsintensität des Lithium-Ionen-Batteriepacks während zwei oder mehr anfänglicher Impulsladezyklen des Lithium-Ionen-Batteriepacks zu schätzen. Das eine oder die mehreren Steuergeräte berechnen eine aktualisierte Plattierungsintensität des Lithium-Ionen-Batteriepacks entsprechend einem nachfolgenden Impulsladezyklus, der auf der Basis der Plattierungsintensität des Lithium-Ionen-Batteriepacks bestimmt wird. Als Reaktion auf das Bestimmen, dass die aktualisierte Plattierungsintensität in einen akzeptablen Bereich von Plattierungsintensitätswerten fällt, führen das eine oder die mehreren Steuergeräte einen optimierten Impulsladezyklus aus, der auf der aktualisierten Plattierungsintensität basiert.

SECONDARY BATTERY, NEGATIVE ELECTRODE SHEET AND PREPARATION METHOD THEREFOR, AND ELECTRIC APPARATUS

NºPublicación:  WO2026077036A1 16/04/2026
Solicitante: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
\u5B81\u5FB7\u65F6\u4EE3\u65B0\u80FD\u6E90\u79D1\u6280\u80A1\u4EFD\u6709\u9650\u516C\u53F8
WO_2026077036_A1

Resumen de: WO2026077036A1

A secondary battery, a negative electrode sheet and a preparation method therefor, and an electric apparatus. The secondary battery comprises: a positive electrode, a negative electrode, and a separator located between the positive electrode and the negative electrode. The negative electrode comprises a negative electrode active material and a lithium-containing conductive agent. The negative electrode active material comprises graphite, and the lithium-containing conductive agent comprises C atoms and Li atoms. In the lithium-containing conductive agent, the atomic ratio of the C atoms to the Li atoms is less than or equal to 6.

Batterie und Kraftfahrzeug

NºPublicación:  DE102024129476A1 16/04/2026
Solicitante: 
HELLA GMBH & CO KGAA [DE]
DE_102024129476_PA

Resumen de: DE102024129476A1

Die vorliegende Erfindung betrifft eine Batterie (10) umfassend: eine einzige Batteriezelle (1), und eine Gleichspannungswandlerschaltung (2), die ausgebildet ist, eine von der einzigen Batteriezelle (1) bereitgestellte Batteriezellspannung (Uz) in eine extern abgreifbare Batterieausgangsspannung (Ua) zu wandeln. Die vorliegende Erfindung betrifft ferner ein Kraftfahrzeug (100) umfassend: eine derartige Batterie (10), und ein Bordnetz (20), das im Betrieb von der Batterie (10) mit der Batterieausgangsspannung (Ua) versorgt wird.

GAS RELEASE VALVE AND BATTERY MANUFACTURING METHOD USING SAME

NºPublicación:  WO2026079684A1 16/04/2026
Solicitante: 
LG ENERGY SOLUTION LTD [KR]
\uC8FC\uC2DD\uD68C\uC0AC \uC5D8\uC9C0\uC5D0\uB108\uC9C0\uC194\uB8E8\uC158
WO_2026079684_A1

Resumen de: WO2026079684A1

According to exemplary embodiments of the present invention, provided is a battery manufacturing method. The method comprises: a step for preparing a case, which includes an electrode accommodation part having an electrode accommodation space and a gas pocket part having a gas pocket space, and a battery cell, which includes an electrode assembly accommodated in the electrode accommodation space; a step for inserting a needle of a gas release valve into the gas pocket part; a step for activating the battery cell; and a step for using the gas release valve to discharge gas collected in the gas pocket part.

BINDER FOR CATHODE OF LITHIUM SECONDARY BATTERY, AND CATHODE AND LITHIUM SECONDARY BATTERY INCLUDING SAME

NºPublicación:  WO2026079900A1 16/04/2026
Solicitante: 
LG ENERGY SOLUTION LTD [KR]
\uC8FC\uC2DD\uD68C\uC0AC \uC5D8\uC9C0\uC5D0\uB108\uC9C0\uC194\uB8E8\uC158
WO_2026079900_A1

Resumen de: WO2026079900A1

The present invention provides a binder for a cathode of a lithium secondary battery, the binder comprising an ammonium cation-substituted cationic polyvinylidene fluoride-based polymer.

HYBRID ORGANIC-INORGANIC REDOX ACTIVE MATERIAL AND RELATED COMPOSITES, COMPOSITIONS, ELECTRODE MATERIAL, ELECTRODES, ELECTROCHEMICAL CELLS, BATTERIES, METHODS AND SYSTEMS

NºPublicación:  WO2026080468A1 16/04/2026
Solicitante: 
LINOVA ENERGY INC [US]
WO_2026080468_A1

Resumen de: WO2026080468A1

Provided herein hybrid organic-inorganic redox active materials and related composites, compositions, electrode materials, electrodes electrochemical cells, batteries, methods and systems, which, can be used as to provide high performance cathode active materials in high capacity, high energy density, safe, and long-lasting electrochemical cells and batteries when coupled with Li, Na, K, graphite, lithiated graphite, in situ lithiated graphite, silicon, lithiated silicon, in situ lithiated silicon, silicon-graphite, in situ lithiated silicon-graphite, hard carbon, sodiated hard carbon, graphite-silicone, lithiated graphite-silicon etc. anodes in non-aqueous electrolytes.

POSITIVE ELECTRODE ACTIVE MATERIAL, AND POSITIVE ELECTRODE AND LITHIUM SECONDARY BATTERY COMPRISING SAME

Nº publicación: WO2026079774A1 16/04/2026

Solicitante:

LG CHEM LTD [KR]
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WO_2026079774_A1

Resumen de: WO2026079774A1

The present invention relates to a single-particle positive electrode active material that enables optimal battery performance, and, more particularly, the present invention relates to: a positive electrode active material which comprises a single-particle lithium composite transition metal oxide composed of no more than 10 primary particles, the positive electrode active material having a degree of micronization of 4.5 to 6.0 as defined by equation 1 described in the present specification; and a positive electrode and a lithium secondary battery comprising the positive electrode active material.

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