Samsung Sdi Co., Inc.

Iucf-hyu

Taeri Kwon

Dongwon Kim

Woocheol Shin

Heeeun Yoo

Minju Lee

Siyoung Cha

Duckhyun Kim

Taehyun Bae

Ilkyong Kwon

Yunchae Jung

ILKyoung Kwon

A positive electrode for an all-solid secondary battery includes a positive active material and a sulfide-based solid electrolyte, wherein the positive active material has a structure containing a core and a shell, the shell includes a nickel-based active material containing cobalt at an amount of about 30 mol % or higher, a surface of the positive active material includes a coating layer including at least one lithium ion conductor selected from a lanthanum oxide and a lithium lanthanum oxide, and an amount of the lithium ion conductor is in a range of about 0.1 parts to about 10 parts by weight based on 100 parts by weight of the total weight of the positive active material and the lithium ion conductor.

Positive electrode for all-solid secondary battery and all-solid secondary battery including the same

A positive electrode for an all-solid secondary battery including a sulfide-based solid electrolyte includes a first positive active material having an average particle diameter of about 15 μm to about 20 μm, a second positive active material having an average particle diameter of about 2 μm to about 6 μm, and a solid electrolyte, wherein at least one selected from the first positive active material and the second positive active material includes a coating layer including a lithium ion conductor, and each of the first positive active material and the second positive active material includes a core and a shell, wherein the shell includes a nickel-based active material containing cobalt. An all-solid secondary battery includes the positive electrode.

Provided are an electrolyte for a lithium metal battery and a lithium metal battery including the electrolyte, wherein the electrolyte includes a composite including a lithium ion-conductive compound which is a non-carbonate-based substance having resistance to reduction of lithium metal, a polymerization product of a crosslinkable polymer, and a lithium salt, wherein the lithium ion-conductive compound is glycol ether.

Electrolyte for lithium metal battery and lithium metal battery including the same

An electrode assembly includes a first electrode at an upper part, a second electrode at a lower part, and an electrolyte membrane between the first electrode and the second electrode. Each of the first electrode and the second electrode includes an electrode active material layer, a tab portion, and a non-coated portion, the non-coated portion being located at at least one lateral side of the first electrode or the second electrode, and the non-coated portion of at least one of the first electrode and the second electrode includes at least one groove that is parallel to a thickness direction of the first electrode or the second electrode.

Electrode assembly, lithium battery including the same, and method of manufacturing the electrode assembly

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Yongin-si, South Korea

Taeri Kwon