Chonnam National University

Hyundai Motor Company

Lg Chem, Ltd

Jin Sub Lim

Jae Kook Kim

Song Taek Oh

Geun Chang Chung

Seung Ho Ahn

Dong Han Kim

Su Rim Lee

Sang Uck Lee

Chul Hong Woo

Eun Joung Kim

In Sun Yoo

Eun Seok Choi

Provided are a mixed cathode active material having improved power characteristics and safety, and a lithium secondary battery including the same. More particularly, the present invention relates to a mixed cathode active material which may assist power in a low SOC range to widen an available state of charge (SOC) range and may simultaneously provide improved safety by blending substituted LFP, in which operating voltage is adjusted by substituting a portion of iron (Fe) with other elements such as titanium (Ti), in order to prevent a rapid increase in resistance of manganese (Mn)-rich having high capacity but low operating voltage in a low SOC range (e.g., a SOC range of 10% to 40%), and a lithium secondary battery including the mixed cathode active material.

Mixed cathode active material having improved power characteristics and safety, and lithium secondary battery including the same

The present invention features a high-capacity anode material for rapidly chargeable and dischargeable lithium secondary batteries, which is composed of LiTiOnanoparticles. The LiTiOnanoparticles of the present invention exhibit excellent crystallinity and high rate capability compared to those synthesized using a conventional polyol process or solid reaction process by converting LiTiO, which is a zero-strain insert material spotlighted as an anode active material for lithium secondary batteries, into LiTiO, having a high crystalline nanostructure using a solvothermal synthesis process without performing additional heat treatment. The present invention also features methods of, and a method of preparing the high-capacity anode materials described herein.

High-capacity anode material for lithium secondary batteries and process for synthesizing the same

Provided are embodiments of a method of synthesizing nano scale electrode materials using an ultrafast combustion technique and nano scale electrode materials synthesized using the method. The method does not require a process of annealing reaction products required for synthesis of electrode materials or any other additional processes, such as cleaning, filtering, and drying processes, so that it can take only several seconds to several minutes to obtain a resultant product.

Method for synthesizing nano scale electrode materials using an ultra-fast combustion method, and nano scale electrode materials synthesized by the method

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Gwangju, South Korea

Jin Sub Lim