Samsung Fine Chemicals Co., Ltd.

Shin Jung Choi

Sung Nim Jo

Mi Sun Lee

Pil Sang Yun

Yun Ju Cho

Doo Kyun Lee

Provided are a multi-layered structure electrolyte including a gel polymer electrolyte on opposite surfaces of a ceramic solid electrolyte, for a lithium ion secondary battery including positive and negative electrodes capable of intercalating/deintercalating lithium ions, and a lithium ion secondary battery including the electrode. The electrolyte includes a gel polymer electrolyte on opposite surfaces of a ceramic solid electrolyte.

Multi-layered structure electrolyte for lithium ion secondary battery and lithium ion secondary battery comprising the same

Provided are a composite positive electrode active material, an electrode for a lithium secondary battery including the composite positive electrode active material, and a lithium secondary battery, and more particularly, a composite positive electrode active material including lithium composite oxide, activated carbon, and carbon black, an electrode for a lithium secondary battery including the composite positive electrode active material, and a lithium secondary battery. The present disclosure may provide a lithium secondary battery having improved rate characteristics in a low-temperature atmosphere.

Composite positive electrode active material, electrode for lithium secondary battery including composite positive electrode active material, and lithium secondary battery

Provided are a lithium manganese oxide positive active material for a lithium ion secondary battery and a lithium ion secondary battery including the same. The lithium manganese oxide positive active material includes a spinel lithium manganese oxide of three or more types of particles having different sizes mixed therein, wherein first type particles have an average diameter of 5 &#x3bc;m or greater, second type particles have an average diameter of 1 &#x3bc;m or less, third type particles have an average diameter of 200 nm or less, and the average diameter of the second type particles is greater than that of the third type particles.

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Asan-si, South Korea

Shin Jung Choi