Lg Energy Solution, Ltd.

Lg Chem, Ltd

Korea Advanced Institute of Science and Technology

Chung Ang University Industry Academic Cooperation

Industry-University Cooperation Foundation Hanyang University

Daegu Gyeongbuk Institute of Science and Technology

Unist, Inc.

Minchul Jang

Byoungkuk Son

Junghun Choi

Eunkyung Park

Da Young Sung

Suk Il Youn

Changhun Park

Seong Ho Lee

Bora Jung

Se Ho Park

InSung Uhm

Yu Mi Kim

Sung Chul Lim

Gi Su Park

Sung Kyun Chang

Jongmoon Yoon

Ki-Young Lee

Intae Park

Kyoung Hoon Kim

Jaeseong Yeo

Jang Wook Choi

Wang Mo Jung

Jin Kyu Lee

Sung Soo Yoon

Doo Kyung Yang

Dal Mo Kang

Hong Kyu Park

Jae Hyun Lee

BumHyun Lee

Gyo Hyun Hwang

Sang-Young Lee

Min Seo Kim

Doyeon Kim

Donghyeon Kang

Yeilin Ham

Woongchul Choi

Yonghee Kang

Seo-Jae Lee

YoHan Kwon

Jeong Kyu Kim

Suhwan Kim

Youngcheol Choi

Sanghoon Choy

Chanyeup Chung

Hee Chang Youn

Kiyoung Kwon

Seongmin Ha

Myung Gil Kim

Sin Young Park

Joong Jin Han

Jin Woong Ha

Youngjoon Shin

Hee Soo Yoon

Jeeho Kim

Youngjea Kim

Taek Gyoung Kim

Hanho Lee

Yoo Seok Kim

Hyungsam Choi

Dong Keun Kwon

Jeongae Yoon

Sung-Ju Cho

Byung Gon Kim

Ilhong Kim

Euiyong Bang

JinHyoung Yoo

Jongwook Jung

Seungpyo Jeong

Dal Moh Kang

Taegon Kim

Boram Lee

Sujee Kwon

Byounghyo Jung

Inchul Shin

Taeseup Song

Eun Ji Yoo

Hochun Lee

Sungjin Kang

Hyeonji Kim

Myeonghun Song

Seho Sun

Dongsoo Lee

Hyewon Hwang

A secondary battery according to an embodiment of the present disclosure is a secondary battery including a cathode in which a cathode material is applied onto a cathode current collector, wherein the cathode material includes an irreversible additive and a cathode active material, and the irreversible additive includes lithium nickel oxide (LNO) having a trigonal crystal structure within an operating range from 3.0 V or more to 4.0 V or less in the secondary battery.

Secondary battery including cathode material including irreversible additive, and method for manufacturing the same

The present disclosure provides an irreversible additive contained in a cathode material for a secondary battery, wherein the irreversible additive is an oxide represented by the following chemical Formula 1, and wherein the oxide has a trigonal structure, a cathode material including the irreversible additive, and a secondary battery including the cathode material:LiNiMOO  (1)

Irreversible additive comprised in cathode material for secondary battery, cathode material comprising the same, and secondary battery comprising cathode material

The present invention relates to a porous separator comprising a porous layer containing a plurality of plate-type inorganic particles and a first binder polymer positioned on part or all of the surface of the plate-type inorganic particles to connect and fix between the plate-type inorganic particles; and a metal layer formed on any one surface of the porous layer, and a lithium secondary battery comprising the same.

Porous separator and lithium secondary battery comprising same

Provided is an irreversible additive contained in a cathode material for a secondary battery, wherein the irreversible additive is an oxide represented by the following Chemical Formula 1, and wherein the oxide has a trigonal crystal structure, a cathode material including the same, and a secondary battery including the cathode material,LiNiMO  (1)

Additive comprised in cathode material for secondary battery, cathode material comprising the same, and secondary battery comprising cathode material

Provided is an irreversible additive contained in a cathode material for a secondary battery, wherein the irreversible additive being an oxide represented by the following Chemical Formula 1, and wherein the oxide has a monoclinic crystal structure, a cathode material including the same, and a secondary battery including the cathode material:LiCuMO  (1)

The present invention relates to a lithium secondary battery manufactured by forming a negative electrode free battery and then forming a lithium metal on the negative electrode current collector by charging. In the lithium secondary battery, since lithium metal is formed on the negative electrode current collector in the state of being blocked with the atmosphere, the generation of the conventional surface oxide layer (native layer) formed on the negative electrode does not occur inherently, thereby preventing the reduction of the efficiency and lifetime characteristics of the battery.

Lithium secondary battery

A lithium secondary battery including a positive electrode, a negative electrode comprising a negative electrode current collector, and an electrolyte interposed between the positive electrode and negative electrode. The lithium metal is formed on the negative electrode current collector by lithium ions migrating toward the negative electrode current collector after charge. The electrolyte comprises a sacrificial salt having an oxidation potential of 5 V or less with respect to lithium. The lithium secondary battery forms lithium metal while being blocked from the atmosphere, and thereby improves an existing problem caused by high reactivity of lithium metal. By including a sacrificial salt in an electrolyte, lithium consumption caused by an irreversible reaction of a negative electrode is reduced, which may prevent decline in the battery capacity and lifetime properties.

A lithium secondary battery comprising a positive electrode, a negative electrode, a lithium metal layer, and an electrolyte disposed between the positive electrode and the negative electrode. The negative electrode comprises a first protective layer formed on a negative electrode current collector, a second protective layer formed on the first protective layer opposite the negative electrode current collector, and a third protective layer formed inside and on one surface of the second protective layer opposite the first protective layer, and wherein the lithium metal layer is formed between the negative electrode current collector and the first protective layer in the negative electrode when lithium ions migrate from the positive electrode after charging.

A lithium secondary battery including a positive electrode, a negative electrode comprising a negative electrode current collector, and an electrolyte disposed between the positive electrode and the negative electrode; and a lithium metal layer on the negative electrode current collector in the negative electrode. The electrolyte includes a first electrolyte layer and a second electrolyte disposed on the first electrolyte layer, wherein the first electrolyte layer faces the negative electrode, and the second electrolyte layer faces the positive electrode. The first electrolyte layer has higher ion conductivity than the second electrolyte layer, and wherein the lithium metal layer is formed by migration of lithium ions from the positive electrode after charging.

A negative electrode for a lithium secondary battery including a lithium metal layer and a protective layer including a three-dimensional structural body made of metal and lithium nitride on the lithium metal layer. The protective layer induces uniform ionic conductivity and electrical conductivity on the surface of the negative electrode. A method for manufacturing method a negative electrode for a lithium secondary battery including the steps of forming a metal hydroxide having a three-dimensional structure, forming a metal nitride having a three-dimensional structure by a nitridation reaction of the metal hydroxide of the three-dimensional structure; and transferring the metal nitride having the three-dimensional structure onto a lithium metal layer to form a protective layer. A lithium secondary battery including the negative electrode for a lithium secondary battery.

Negative electrode comprising a protective layer for a lithium secondary battery, method for manufacturing same, and lithium secondary battery including same

Provided is a positive electrode for secondary battery including:

Positive electrode for secondary battery comprising flake graphite and secondary battery comprising the same

A lithium electrode and a lithium secondary battery including the same, which includes a first protective layer and a second protective layer sequentially formed on at least one surface of lithium metal layer. The second protective layer contains a cross-linked ion conductive electrolyte in the interior and on the surface of the electrically conductive matrix, and thus the first protective layer has higher ion conductivity than the second protective layer, thereby preventing electrons from being concentrated into lithium dendrites formed from the lithium metal to inhibit the growth of lithium dendrites, and at the same time, physically inhibiting the growth of lithium dendrites by the second protective layer.

Lithium electrode and lithium secondary battery comprising same

A lithium electrode having an acrylic polymer layer formed on a lithium metal layer wherein the acrylic polymer layer functions as a protective layer for the lithium metal layer, and functions as a release layer in the manufacturing process of the lithium electrode. The acrylic polymer layer shows an effect that does not act as a resistance in the lithium secondary battery comprising the lithium electrode during operation of the battery.

A lithium secondary battery, in which, by using different electrolytes in a positive electrode and a negative electrode, and using a gel polymer electrolyte, in which a small amount of an electrolyte liquid is impregnated into a polymer matrix, between the negative electrode and the separator, the stability and performance of the electrode may be improved, and therefore, the performance and lifetime of the lithium secondary battery may be enhanced.

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Daejeon, South Korea

Minchul Jang