Positive Electrode and Lithium Secondary Battery Manufactured Using Same

A positive electrode includes a positive electrode active material layer, and the positive electrode active material layer includes a first lithium iron phosphate and a second lithium iron phosphate as a positive electrode active material, the first lithium iron phosphate has an average particle dia...

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Bibliographische Detailangaben
Hauptverfasser:	Kim, Ju Ryoun, An, In Gu, Kwon, O Jong, Jo, Jeong Geun, Kang, Yong Hee, Choi, Jung Hun, Kim, Ki Woong, Kim, Ji Eun, Jang, Min Chul
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ELECTRICITY INORGANIC CHEMISTRY METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	A positive electrode includes a positive electrode active material layer, and the positive electrode active material layer includes a first lithium iron phosphate and a second lithium iron phosphate as a positive electrode active material, the first lithium iron phosphate has an average particle diameter D50 grater than that of the second lithium iron phosphate and at least one facet, and when the cross section of the positive electrode is observed with a scanning electron microscope (SEM), the cross section of the first lithium iron phosphate has at least one side having a length of 2 μm or more.