ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY
An object of the present invention is to obtain an electrode for secondary battery capable of realizing a secondary battery having a high output and a long lifespan using a small amount of conductive auxiliary. The present invention is an electrode for secondary battery which has a mixture layer con...
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| creator | KONISHI, Takashi TAMAKI, Eiichiro |
| description | An object of the present invention is to obtain an electrode for secondary battery capable of realizing a secondary battery having a high output and a long lifespan using a small amount of conductive auxiliary. The present invention is an electrode for secondary battery which has a mixture layer containing graphene and active material particles for secondary battery containing at least lithium and nickel and in which an average aspect ratio of conductive material portions in a cross section of the electrode for secondary battery identified by the following method is 2.0 or more: the method for identifying a conductive material portion: (1) a spreading resistance value at a mixture layer portion is acquired by scanning spreading resistance microscopy, and (2) a total data number of the spreading resistance values is taken as N, the spreading resistance values are sorted in ascending order, and a 0.1Nth spreading resistance value (rounded down to a nearest decimal point of 0.1N) is taken as R, and binarization processing is performed on two-dimensional data of a spreading resistance value using 0.7R as a threshold value and a portion having a resistance value of 0.7R or less in a binarized image attained is taken as a conductive material portion. |
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The present invention is an electrode for secondary battery which has a mixture layer containing graphene and active material particles for secondary battery containing at least lithium and nickel and in which an average aspect ratio of conductive material portions in a cross section of the electrode for secondary battery identified by the following method is 2.0 or more: the method for identifying a conductive material portion: (1) a spreading resistance value at a mixture layer portion is acquired by scanning spreading resistance microscopy, and (2) a total data number of the spreading resistance values is taken as N, the spreading resistance values are sorted in ascending order, and a 0.1Nth spreading resistance value (rounded down to a nearest decimal point of 0.1N) is taken as R, and binarization processing is performed on two-dimensional data of a spreading resistance value using 0.7R as a threshold value and a portion having a resistance value of 0.7R or less in a binarized image attained is taken as a conductive material portion.</description><language>eng ; fre ; ger</language><subject>BASIC ELECTRIC ELEMENTS ; CHEMISTRY ; COMPOUNDS THEREOF ; ELECTRICITY ; INORGANIC CHEMISTRY ; METALLURGY ; NON-METALLIC ELEMENTS ; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</subject><creationdate>2022</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&date=20220727&DB=EPODOC&CC=EP&NR=3852168A4$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220727&DB=EPODOC&CC=EP&NR=3852168A4$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KONISHI, Takashi</creatorcontrib><creatorcontrib>TAMAKI, Eiichiro</creatorcontrib><title>ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY</title><description>An object of the present invention is to obtain an electrode for secondary battery capable of realizing a secondary battery having a high output and a long lifespan using a small amount of conductive auxiliary. 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| subjects | BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS THEREOF ELECTRICITY INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY |
| title | ELECTRODE FOR SECONDARY BATTERY AND SECONDARY BATTERY |
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