Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same

Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same

A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1, and a second compound having a smaller particle diameter than the first compound and represented by Chemical Formula 2, wherein the first compound and the second compound have a...

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Hauptverfasser: Hong, Mingzi, Kim, Young-Ki, Hong, Soonkie, Chae, Youngjoo, Lee, Soonrewl, Choi, Ickkyu, Park, Jungjoon
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator Hong, Mingzi
Kim, Young-Ki
Hong, Soonkie
Chae, Youngjoo
Lee, Soonrewl
Choi, Ickkyu
Park, Jungjoon
description A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1, and a second compound having a smaller particle diameter than the first compound and represented by Chemical Formula 2, wherein the first compound and the second compound have a Ni content of about 50 at % to about 60 at % based on a total amount of metal elements excluding Li. A rechargeable lithium battery including the first compound and the second compound satisfies Relation 1:Vs
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A rechargeable lithium battery including the first compound and the second compound satisfies Relation 1:Vs&lt;V1≤3.6.  [Relation 1]In Relation 1, V1 is a voltage value at a point where a tangent line to a value corresponding to 50% of the first peak value intersects the line dQ/dV=0, and Vs is a charge start voltage, as determined from a differential capacity (dQ/dV)-voltage charge/discharge plot.</description><language>eng</language><subject>BASIC ELECTRIC ELEMENTS ; ELECTRICITY ; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</subject><creationdate>2023</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20230110&amp;DB=EPODOC&amp;CC=US&amp;NR=11552293B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20230110&amp;DB=EPODOC&amp;CC=US&amp;NR=11552293B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Hong, Mingzi</creatorcontrib><creatorcontrib>Kim, Young-Ki</creatorcontrib><creatorcontrib>Hong, Soonkie</creatorcontrib><creatorcontrib>Chae, Youngjoo</creatorcontrib><creatorcontrib>Lee, Soonrewl</creatorcontrib><creatorcontrib>Choi, Ickkyu</creatorcontrib><creatorcontrib>Park, Jungjoon</creatorcontrib><title>Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same</title><description>A positive active material for a rechargeable lithium battery includes a first compound represented by Chemical Formula 1, and a second compound having a smaller particle diameter than the first compound and represented by Chemical Formula 2, wherein the first compound and the second compound have a Ni content of about 50 at % to about 60 at % based on a total amount of metal elements excluding Li. 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A rechargeable lithium battery including the first compound and the second compound satisfies Relation 1:Vs&lt;V1≤3.6.  [Relation 1]In Relation 1, V1 is a voltage value at a point where a tangent line to a value corresponding to 50% of the first peak value intersects the line dQ/dV=0, and Vs is a charge start voltage, as determined from a differential capacity (dQ/dV)-voltage charge/discharge plot.</abstract><oa>free_for_read</oa></addata></record>
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Positive active material for rechargeable lithium battery, method of preparing the same and rechargeable lithium battery including the same
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