Lg Energy Solution, Ltd.

Lg Chem, Ltd

Lilin Piao

Je-Young Kim

Eun Kyung Kim

Sang-Wook Woo

Su Min Lee

Sun Young Shin

Su Yeon Lee

Je Young Kim

Eun-Kyung Kim

Ju Ho Chung

Hee-Won Choi

Hyun-Chul Kim

Chang Ju Lee

Ju-Ho Chung

A spheronized carbonaceous negative electrode active material and a method of preparing a spheronized carbonaceous negative electrode active material, which has an average particle diameter (D) of 8.5-10.5 μm, a minimum particle diameter (D) of 2.3 μm or more, and a tap density of 1.00-1.20 g/cc.

Globular carbon-based anode active material, method for manufacturing same, and anode and lithium secondary battery comprising same

A negative electrode for a lithium secondary battery including a negative electrode active material layer. The negative electrode active material layer is formed by steps of coating a negative electrode mixture slurry including spheroidized natural graphite particles as a negative electrode active material on at least one surface of a negative electrode current collector, followed by drying and pressing the negative electrode mixture slurry on the at least one surface of the negative electrode current collector. The spheroidized natural graphite particles include a plurality of pores. The negative electrode active material layer has a Brunauer-Emmett-Teller (BET) specific surface area of the negative electrode active material layer after the pressing is larger than a BET specific surface area of the negative electrode active material layer before pressing. A difference in the BET specific surface area before and after pressing ranges from 0.9 m/g to 1.2 m/g.

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

The present invention relates to a composite negative electrode material for a secondary battery, and a negative electrode and a lithium secondary battery which include the same, and particularly to a composite negative electrode material for a secondary battery, which includes a graphene sheet, and two or more coating layers formed on both sides of the graphene sheet, wherein the two or more coating layers include at least one polymer coating layer and at least one pitch coating layer, and the graphene sheet and the two or more coating layers are included in a weight ratio of greater than 1:greater than 0.01 to less than 0.1, and a negative electrode and a lithium secondary battery which include the same.

Composite negative electrode material for secondary battery, and negative electrode and lithium secondary battery including the same

A negative electrode active material including artificial graphite secondary particles comprising artificial graphite primary particles having an average particle diameter (D50) of 10 nm to 9 &#x3bc;m, said artificial graphite secondary particles being formed by granulating said artificial graphite primary particles, wherein a value (V) obtained by dividing a minimum particle diameter (D) of the secondary particles by the average particle diameter (D) of the initial particles is 0.50 to 0.8, and a value (V) obtained by dividing the minimum particle diameter (D) of the secondary particles by an average particle diameter (D) of the secondary particles is 0.23 to 0.4.

Negative electrode active material, and negative electrode and lithium secondary battery comprising same

A negative electrode active material for an electrochemical device which has improved quick charging characteristics. The negative electrode active material includes two types of graphite particles having a different particle diameter and shows a bimodal distribution, wherein the ratio of the average particle diameter (D) of the first graphite particles to the average particle diameter (D) of the second graphite particles is larger than 1.7.

Negative electrode active material for electrochemical device, negative electrode including the negative electrode active material and electrochemical device including the same

The present invention relates to a negative electrode and a secondary battery including the same, and particularly, to a negative electrode which includes a negative electrode active material layer including first active material particles each in the form of a secondary particle in which a plurality of primary particles are agglomerated; and second active material particles, wherein the second active material particles have an average particle size (D) equal to or less than an average particle size (D) of the primary particles, the first active material particle is artificial graphite, and the second active material particle is a graphite-based particle, and a secondary battery, a battery module, and a battery pack including the same.

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Daejeon, South Korea

Lilin Piao