Samsung Sdi Co., Inc.

Kyoung-Hyun Kim

Do-Hyung Park

Min-Han Kim

Seon-Young Kwon

Ji-Hyun Kim

Yu-Mi Song

Han-Eol Park

Joong-Ho Moon

Ming-Zi Hong

Ki-Hyun Kim

Sun-Ho Kang

Sang-Hoon Kim

Dong-Jin Kim

Ju-Hyeong Han

Jeong-Hoon Kim

Jeon-Jin Choi

Gyu-Ran Jeon

Jong-Seo Choi

Yong-Chan You

Chang-Wook Kim

Jun-Seok Park

Myong-A Woo

Jin-Hwa Kim

Ji-hyun Kim

Provided are a composite precursor of a cathode active material, the composite precursor including a cobalt hydroxide and a cobalt oxyhydroxide, where an X-ray diffraction spectrum of the composite precursor has a first peak observed at a diffraction angle (2&#x3b8;) of 19.5&#xb0;&#xb1;0.5&#xb0; and a second peak observed at a diffraction angle (2&#x3b8;) of 38.5&#xb0;&#xb1;0.5&#xb0;; a cathode active material prepared from the composite precursor; a cathode and a lithium battery including the composite precursor; and a method of preparing the composite precursor.

Composite precursor of cathode active material, cathode active material, cathode and lithium battery containing the cathode active material, and method of preparing composite precursor

An electron collector structure and a lithium battery including the same are disclosed. The electron collector structure includes a conductive thin film; and a graphene layer that is coated on the surface of the conductive thin film and may improve the electrical conductivity of an electrode plate. As an electrode of the lithium battery includes the electron collector structure, the electrical conductivity of the electrode may be increased so that the energy consumption properties as well as the lifespan characteristics of the lithium battery may be also improved.

Electron collector structure and lithium battery containing the same

A composite cathode active material includes a material capable of intercalating or deintercalating lithium; and a solid ion conductor. A cathode and a lithium battery each include the composite cathode active material. A method of preparing a composite cathode active material includes: mixing a core including a cathode active material and a solid ion conductor; and forming a coating layer including the solid ion conductor on the core utilizing a dry method.

Composite cathode active material, method of preparing the same, and cathode and lithium battery including the composite cathode active material

A composite cathode active material includes: a core including a material capable of intercalation and deintercalation of lithium; and a first coating layer on at least one portion of the core, where the first coating layer includes zirconium oxide. A lithium battery includes a cathode including the composite cathode active material. Methods of preparing the composite cathode active material are also disclosed.

Composite cathode active material, lithium battery including the same, and method of preparing the same

A composite cathode active material including a core comprising a lithium compound, and a coating layer formed on at least one portion of the core and including at least two oxide phases having different structures, a cathode and a lithium battery including the same, and a method of preparing the composite cathode active material.

Composite cathode active material, cathode and lithium battery comprising the same, and preparation method thereof

A positive active material for a rechargeable lithium battery including a lithium metal oxide represented by the following Chemical Formula 1, a method of preparing the same, and a rechargeable lithium battery including the same.LiMeM'O&#x2003;&#x2003;Chemical Formula 1 In Chemical Formula 1, Me is NiCoMn, M&#x2032; is Mg, Al, Fe, P, or a combination thereof, 0.955&#x2266;a&#x3c;1.05, 0.001&#x2266;k&#x2266;0.1, 0.5&#x3c;x&#x2266;0.65, 0.1&#x3c;y&#x2266;0.25, 0.1&#x3c;z&#x2266;0.25, x+y+z+k=1, M&#x2032; is doped at a Li site and at least one of Ni, Co, and Mn sites, M&#x2032; is doped in an amount at 0.1 mol % or 10 mol % or between 0.1 mol % and 10 mol % based on the total amount of Ni, Co, and Mn, and a doping mole ratio of M&#x2032; doped at the Li site with respect to a Me site is in the following range: about 0.001&#x2266;A/A&#x2266;about 0.5.

Positive active material for rechargeable lithium battery, method of preparing same, and rechargeable lithium battery including same

A composite precursor represented by Formula 1, a composite prepared therefrom represented by Formula 2, a method of preparing a composite precursor and a composite, a positive electrode for lithium secondary battery including the same, and a lithium secondary battery employing the same.MnO-M(OH)&#x2003;&#x2003;Formula 1wherein in Formula 1, 0&#x3c;a&#x2266;0.8, 0.2&#x2266;b&#x3c;1and M is at least one metal selected from the group consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron, (Fe), cobalt (Co), nickel (Ni), copper (Cu), aluminum (Al), magnesium (Mg), zirconium (Zr), and boron (B)LiMnO-LiMO&#x2003;&#x2003;Formula 2wherein in Formula 2, 0&#x2266;a&#x2266;0.6, 0.4&#x2266;b&#x2266;11.0&#x2266;y&#x2266;1.05,and M is at least one metal selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, Mg, Zr, and B.

Composite precursor, composite prepared therefrom, a method of preparing a composite precursor and a composite, positive electrode for lithium secondary battery including the same, and lithium secondary battery employing the same

In one aspect, a composite cathode active material including at least one large-diameter active material, and at least one small-diameter active material, a cathode including the composite cathode active material and a lithium battery including the cathode is provided.

Composite cathode active material, and cathode and lithium battery each using the same

A rechargeable battery includes: a case; a first electrode assembly accommodated in the case; and second and third electrode assemblies accommodated in the case at positions adjacent to the case with the first electrode assembly being disposed therebetween. The second and third electrode assemblies have thicknesses different from that of the first electrode assembly.

Rechargeable battery

A positive active material for a rechargeable lithium battery includes pores having an average diameter of about 10 nm to about 60 nm and a porosity of about 0.5% to about 20%. Also disclosed is a method of preparing the positive active material, and a rechargeable lithium battery including the positive active material.

Positive active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same

A method for preparing a positive active material for a rechargeable lithium battery includes: a) providing a furnace and a crucible that is included in the furnace; b) putting a mixture of a composite metal precursor and a lithium compound into the crucible; and c) preparing a positive active material for a rechargeable lithium battery by firing the mixture in the crucible, wherein during the process b), the mixture in the crucible is positioned so that a minimum distance from a predetermined position inside the mixture to an exterior of the mixture in the crucible is about 5 cm or less. A rechargeable lithium made by this method is disclosed.

Growing community of inventors

Yongin-si, South Korea

Kyoung-Hyun Kim