Sk Innovation Co., Ltd.

Sk on Co., Ltd.

Dock Young Yoon

Hee Gyoung Kang

Sang Jin Kim

Jong Hyuk Lee

Jee Hee Lee

Hee Young Sun

Myoung Gu Park

Kyong Sik Kim

A lithium secondary battery according to exemplary embodiments includes a cathode, a separation layer, and an anode facing the cathode with the separation layer interposed therebetween. The anode includes an anode current collector, and an anode active material layer formed on the anode current collector. The anode active material layer includes an anode active material and a conductive additive. The conductive additive includes an expandable graphite having a particle diameter of 10 μm or less.

Lithium secondary battery and method of preparing anode for lithium secondary battery

A lithium secondary battery includes a cathode, an anode and a separation layer. The cathode includes a cathode current collector and a cathode active material base layer formed on the cathode current collector. The anode includes an anode current collector and an anode active material base layer formed on the anode current collector. The separation layer is interposed between the cathode and the anode. At least one of the cathode and the anode includes an active material coating layer having a thickness of 20 μm or less.

Lithium secondary battery

The present invention provide a pouch type secondary battery and a method for manufacturing the same. More particularly, the present invention provides a pouch type secondary battery and a method for manufacturing the same, in which a pouch case is formed in a folding manner without being subjected to a forming process (press process), such that there is no limit in a length, and a thickness of an inner space of the pouch case is not limited.

Pouch type secondary battery and method for manufacturing the same

Provided is a lithium secondary battery. The lithium secondary battery includes a negative electrode including a negative electrode active material layer, wherein the negative electrode active material layer includes a mixed negative electrode active material including graphite particles and low crystalline carbon-based particles, and the negative electrode active material layer has an apex of an exothermic peak in a temperature range of no less than 370&#xb0; C. and no more than 390&#xb0; C., as measured by differential scanning calorimetry (DSC).

A lithium secondary battery includes a cathode, an anode and a non-aqueous electrolyte. The anode includes an anode active material which contains a mixture of an artificial graphite and a natural graphite. A sphericity of the natural graphite is 0.96 or more. The lithium secondary battery including the anode has improved life-span and power properties.

A lithium secondary battery includes a cathode, an anode and a non-aqueous electrolyte. The anode includes an anode active material which includes a natural graphite, an average particle diameter (D) of the natural graphite being in a range from 9 &#x3bc;m to 14 &#x3bc;m, and an expansion rate of the anode represented is 17% or less.

Lithium secondary battery with natural graphite anode

Provided is a lithium air battery, particularly, a lithium air battery capable of being easily charged and discharged to thereby improve performance and reliability, having economic feasibility, preventing leakage of ions, and having firmly inter-coupled electrodes to thereby improve durability.

Lithium air battery

Provided is a lithium air battery system, and more particularly, a lithium air battery system capable of stably and continuously operating a lithium air battery by recovering an electrolytic solution evaporated in the lithium air battery and injecting the recovered electrolytic solution into the lithium air battery.

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Daejeon, South Korea

Dock Young Yoon