Samsung Electronics Co., Ltd.

Samsung Sdi Co., Inc.

Jeeeun Yang

Sangwook Kim

Kyung-Eun Byun

Keunwook Shin

Kwanghee Lee

Seunguk Kwon

Sungsoo Han

Woojin Bae

Hyoungwoo Choi

Heechul Jung

Kyueun Shim

Sangkook Mah

Dukhyoung Yoon

Moonil Jung

Jinsoo Mun

A binder includes a third polymer including a cross-linked product of a first polymer and a second polymer, wherein the first polymer includes a first functional group and is at least one selected from a polyamic acid and a polyimide, wherein the second polymer includes a second functional group and is water-soluble, and wherein the first polymer and the second polymer are cross-linked by an ester bond formed by a reaction of the first functional group and the second functional.

Binder, method of preparing the binder, and anode and lithium battery including the binder

A negative electrode for a lithium secondary battery includes: a negative active material disposed on a current collector; a negative active material layer including a first binder and a conductive agent; and a protective layer disposed on the negative active material layer, wherein the protective layer is in direct contact with the current collector and includes a nonaqueous or aqueous second binder and an inorganic material, wherein, in the protective layer including the aqueous second binder and the inorganic material, the amount of the inorganic material may be about 65 parts by weight or greater, based on 100 parts by weight of the protective layer, and wherein the protective layer including the nonaqueous second binder and the inorganic material, the amount of the inorganic material may be in a range of about 5 parts to about 25 parts by weight, based on 100 parts by weight of the protective layer.

Negative electrode for lithium secondary battery and lithium secondary battery including the same

A composite anode active material including: a silicon material and a coating layer formed on at least a portion of a surface of the silicon material, wherein the coating layer is chemically bonded to the silicon material, and wherein the coating layer includes a hydrosilylation product of a C4-C30 alkene having a terminal &#x2014;C(&#x2550;O)OR group, wherein R is a hydrogen, a C1-C5 alkyl group, a C2-C6 heteroalkyl group, a C6-C12 aryl group, or a C7-C13 arylalkyl group, each of which except hydrogen is substituted or unsubstituted.

Composite anode active material, method of preparing the same, and anode and lithium secondary battery including the composite anode active material

A water-soluble partially lithiated polyamic acid having an acid equivalent of less than 300 grams per equivalent and a degree of lithium ion substitution of from about 0.2 equivalents to about 1.0 equivalent with respect to carboxylic acid groups, which is a product of a polyamic acid and lithium hydroxide.

Water-soluble polyamic acid, method of preparing the same, binder composition for lithium battery including the same, and lithium battery manufactured using the binder composition

A composite anode active material includes a metal silicide core, a silicon shell, and a metal nitride and a carbon material that are dispersed in at least one surface of the silicon shell.

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Uiwang-si, South Korea

Jeeeun Yang