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LG Chem Ltd : “Method of Preparing Material for Lithium Secondary Battery of High Performance” in Patent Application Approval Process

By a News Reporter-Staff News Editor at Politics & Government Week — A patent application by the inventors Park, Hong Kyu (Daejeon, KR); Shin, Sun sik (Daejeon, KR); Park, Sin young (Daejeon, KR); Shin, Ho suk (Daejeon, KR); Paulsen, Jens M. (Chungcheongnam-do, KR), filed on August 22, 2013, was made available online on December 26, 2013, according to news reporting originating from Washington, D.C., by VerticalNews correspondents.

This patent application is assigned to Lg Chem, Ltd.

The following quote was obtained by the news editors from the background information supplied by the inventors: “Technological development and increased demand for mobile equipment have led to a rapid increase in the demand for secondary batteries as an energy source. Among other things, lithium secondary batteries having a high-energy density and voltage, a long cycle lifespan and a low self-discharge rate are commercially available and widely used.

“As cathode active materials for the lithium secondary batteries, lithium-containing cobalt oxide (LiCoO.sub.2) is largely used. In addition, consideration has been made of using lithium-containing manganese oxides such as LiMnO.sub.2 having a layered crystal structure and LiMn.sub.2O.sub.4 having a spinel crystal structure, and lithium-containing nickel oxides (LiNiO.sub.2).

“Of the aforementioned cathode active materials, LiCoO.sub.2 is currently widely used due to superior general properties including excellent cycle characteristics, but suffers from low safety, expensiveness due to finite resources of cobalt as a raw material, and limitations in practical and mass application thereof as a power source for electric vehicles (EVs) and the like.

“Lithium manganese oxides, such as LiMnO.sub.2 and LiMn.sub.2O.sub.4, are abundant resources as raw materials and advantageously employ environmentally-friendly manganese, and therefore have attracted a great deal of attention as a cathode active material capable of substituting LiCoO.sub.2. However, these lithium manganese oxides suffer from shortcomings such as low capacity and poor cycle characteristics.


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