Korea Institute of Science and Technology

Dongguk University Industry-academic Cooperation Foundation

Kyung Yoon Chung

Byung Won Cho

Won Young Chang

Hun-Gi Jung

Jaeho Park

Hyung Sun Kim

Ji-young Kim

Joong Kee Lee

Hwa Young Lee

Si Hyoung Oh

Dong Hyun Kim

Hyungseok Kim

Minah Lee

Sang Ok Kim

Jaehoon Kim

Jae Hyun Cho

Eun Jung Shin

Kyung-wan Nam

Ghulam Ali

Daniel Adjah Anang

Moeez Iqra

Seungho Yu

Ji Won Son

Jong Ho Lee

Sang Hoon Lee

Jong Min Park

Su Jin Kim

Ji Su Kim

Byung Kook Kim

Il Doo Kim

Soo Hyung Kim

Hyoung Chul Kim

Hun Gi Jung

Ju Young Jang

Byung-Won Cho

Hae Weon Lee

Sung Jun Choi

Min Kyung Cho

Eu Deum Jung

Jin-Yoo Suh

Jihyun Hong

Ji-Hoon Lee

Joo Man Woo

Ji-Ae Choi

Seong-Rae Lee

Inyeong Kang

Hee-Dae Lim

Jiwon Jeong

Won Chang Choi

Nugroho Agung

Jon Min Park

Ha Kyung Roh

Jin Kwan Choi

Dieky Susanto

Mobinul Islam

Sang Eun Park

Ji Ung Kim

Liau Dieky Susanto

Yong Sang Kim

Wonchang Choi

Susanto Dieky

Hae Ri Lee

Yeojo Yoon

Chan Wook Jeon

Agung Nugroho

Junghoon Ha

Juhyeon Ahn

Eun Seong Kim

The present disclosure relates to an anode electrode active material for a secondary battery containing nickel cobalt molybdenum oxide, an anode electrode for a secondary battery including the same, a secondary battery including the anode electrode for a secondary battery, and a method for manufacturing the same. The novel anode electrode material for a sodium secondary battery containing nickel cobalt molybdenum oxide according to the present disclosure allows intercalation/deintercalation reaction of sodium ion during charge/discharge and does not undergo significant volume change during the intercalation reaction because structure is maintained stably during repeated charge/discharge. As a result, electrode damage and electric short circuit are decreased and, thus, improved electrochemical characteristics can be achieved in long-life and high-rate capability.

Anode electrode active material for sodium secondary battery comprising nickel cobalt molybdenum oxide, anode electrode for sodium secondary battery comprising same, sodium secondary battery including anode electrode for sodium secondary battery, and method for manufacturing same

The present disclosure relates to a prelithiation solution and a method for preparing a prelithiated anode using the same. The prelithiation solution and the method for preparing a prelithiated anode using the same according to the present disclosure allow uniform intercalation of lithium ions throughout the anode chemically in a solution via a simple process of immersing the anode in a prelithiation solution having a sufficiently low redox potential as compared to an anode active material. A prelithiated anode prepared by this method has an ideal initial coulombic efficiency and a lithium secondary battery with a high energy density can be prepared based thereon. In addition, the prepared anode is advantageously applicable to large-scale production due to superior stability even in dry air.

Prelithiation and method of manufacturing prelithiated anode using the same

The present disclosure relates to a cathode active material for a secondary battery, a cathode for a secondary battery including the same, a secondary battery including the cathode for a secondary battery and manufacturing methods thereof. More particularly, it is possible to obtain a secondary battery having excellent electrochemical characteristics by electrochemically inducing a structural phase change in the cathode active material of a secondary battery including NaCl as a cathode active material.

Cathode active material for secondary battery, cathode for secondary battery including the same, secondary battery including the cathode for secondary battery, and manufacturing methods thereof

The present disclosure provides a composite wherein NaCl nanoparticles are uniformly dispersed on reduced graphene oxide (rGO), a positive electrode active material including the same, a sodium secondary battery including the same, and a method for preparing the same. The positive electrode active material according to the present disclosure has a structure wherein NaCl nanoparticles are uniformly dispersed on rGO in a one-step process through chemical self-assembly. Therefore, the positive electrode active material according to the present disclosure exhibits superior electrochemical properties with high capacity because the small NaCl particles are dispersed uniformly and is economically favorable because the preparation process is simple.

Composite for positive electrode active material of secondary battery, secondary battery including same, and method for preparing same

Disclosed is a method of preparing a cathode active material useful in a sodium ion secondary battery having high reversible capacity and excellent cycle characteristics. The method for preparing a cathode active material composed of Zr-doped NaLiMOincludes the steps of (A) doping LiMOwith Zrto provide Zr-doped LiMO; and (B) dissociating Li ion from the Zr-doped LiMOand inserting Na ion thereto to provide the Zr-doped NaLiMO, wherein M is selected from Ti, V, Cr, Mn, Fe, Co, Ni, Mo, Ru, and combinations thereof, and wherein 0.005&#x3c;w&#x3c;0.05, 0.8&#x2264;x&#x2264;0.85, 0.09&#x2264;y&#x2264;0.11, 7&#x2264;x/y&#x2264;10, 0.7&#x2264;z&#x2264;0.95, and 1.95&#x2264;a&#x2264;2.05. When the cathode active material is used for manufacturing a cathode for a sodium ion secondary battery, the battery can substitute for a conventional, expensive lithium ion secondary battery.

Cathode active material for sodium ion battery, and preparation process thereof

Disclosed are a sulfide-based solid electrolyte imparted with improved lithium ion conductivity and a method of preparing the same. More particularly, disclosed is a sulfide-based solid electrolyte containing a lithium element (Li), a phosphorus element (P), a sulfur element (S) and a halogen element (X), and including a crystal phase of an argyrodite crystal structure, wherein a molar ratio (X/P) of the halogen element (X) to the phosphorus element (P) is higher than 1.

Lithium ion conductive sulfide-based solid electrolyte with controlled halogen elements content and method of preparing the same

An anode active material for a sodium ion secondary battery, a sodium ion secondary battery including an anode active material, and an electric device including the sodium ion secondary battery are disclosed. The anode active material for a sodium ion secondary battery includes a cobalt tin spinel oxide represented by CoSnO. The sodium ion secondary battery includes an anode made of an anode active material composed of a cobalt tin spinel oxide represented by Chemical Formula 1 below:CoSnO,&#x2003;&#x2003;Chemical Formula 1

Anode active material, a sodium ion secondary battery including an anode active material, and an electric device including the secondary battery

An in-situ coin cell support device for transmission mode X-ray diffraction analysis capable of controlling temperature. The device includes a coin cell seating unit including a seating part for receiving an in-situ coin cell, a positive electrode tab coupled to the seating part and connected to a positive electrode of the in-situ coin cell, and a negative electrode tab coupled to the seating part and connected to a negative electrode of the in-situ coin cell, a housing having a heat-insulating function, which surrounds the coin cell seating unit such that the positive and negative electrode tabs extend outwards from the housing and which includes one side wall and an opposite side wall arranged opposite each other with the in-situ coin cell interposed therebetween, and a temperature control unit coupled to the exterior of the housing and including an inlet port, an outlet port, and a flow passage.

In-situ coin cell support device for transmission mode X-ray diffraction analysis capable of controlling temperature

Disclosed is an anode material for a sodium secondary battery. The anode material includes a tin fluoride-carbon composite composed of a tin fluoride and a carbonaceous material. The anode material can be used to improve the charge/discharge capacity, charge/discharge efficiency, and electrochemical activity of a sodium secondary battery. Also provided are a method for preparing the anode material and a sodium secondary battery including the anode material.

Anode material for secondary battery,secondary battery including the anode material and method for preparing the anode material

Provided is a furnace for a transmission mode X-ray diffractometer and a transmission mode X-ray diffractometer using the same. The furnace for a transmission mode X-ray diffractometer includes a sample heating unit disposed adjacent to a quartz capillary accommodating a sample to heat the sample, and a main body disposed to surround the quartz capillary and the sample heating unit and having an insulating function for allowing the heated sample to maintain a thermal equilibrium state.

Furnace for transmission mode X-ray diffractometer and transmission mode X-ray diffractometer using thereof

Disclosed is a method for carbon coating on lithium titanium oxide-based anode active material nanoparticles. The method includes (a) introducing a lithium precursor solution, a titanium precursor solution and a surface modifier solution into a reactor, and reacting the solutions under supercritical fluid conditions to prepare a solution including nanoparticles of an anode active material represented by LiTiO, (b) separating the anode active material nanoparticles from the reaction solution, and (c) calcining the anode active material nanoparticles to uniformly coat the surface of the nanoparticles with carbon. Further disclosed are carbon-coated lithium titanium oxide-based anode active material nanoparticles produced by the method. In the anode active material nanoparticles, lithium ions are transferred rapidly. In addition, the uniform carbon coating ensures high electrical conductivity, allowing the anode active material nanoparticles to have excellent electrochemical properties.

Method for coating carbon on lithium titanium oxide-based anode active material nanoparticles and carbon-coated lithium titanium oxide-based anode active material nanoparticles produced by the method

Provided are a cathode active material coated with a fluorine-doped spinel-structured lithium metal manganese oxide, a lithium secondary battery including the same, and a method for preparing the same. The cathode active material has improved chemical stability and provides improved charge/discharge characteristics at elevated temperature (55-60&#xb0; C.) and high rate. The cathode active material allows lithium ions to pass through the coating layer with ease and is chemically stable, and thus may be used effectively as a cathode active material for a high-power lithium secondary battery.

Cathode active material coated with fluorine-doped lithium metal manganese oxide and lithium-ion secondary battery comprising the same

The present invention relates to a method for recycling LiFePO, which is an olivine-based cathode material for a lithium secondary battery. The present invention is characterized in that a cathode material including LiFePOis synthesized using, as precursors, amorphous FePO.XHO and crystalline FePO.2HO (metastrengite) obtained by chemically treating LiFePOas an olivine-based cathode material for a lithium secondary battery, which is produced from a waste battery. Since a cathode fabricated from the LiFePOcathode material synthesized according to the present invention does not deteriorate the capacity, output characteristics, cycle efficiency and performance of the secondary battery and the cathode material of the lithium secondary battery may be recycled, the secondary battery is economically efficient.

Recycling method of olivine-based cathode material for lithium secondary battery, cathode material fabricated therefrom, and cathode and lithium secondary battery including the same

Disclosed is an electrolyte solution for a magnesium rechargeable battery with a high ionic conductivity and a wide electrochemical window compared to the conventional electrolyte solution. The electrolyte solution is prepared by dissolving magnesium metal into the ethereal solution using combinations of metal chloride catalysts. The electrolyte solution can be applied to fabricate magnesium rechargeable batteries and magnesium hybrid batteries with a markedly increased reversible capacity, rate capability, and cycle life compared to those batteries employing the conventional electrolyte solution. Also disclosed is a method for preparing the electrolyte.

Electrolyte for magnesium rechargeable battery and preparation method thereof

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Seoul, South Korea

Kyung Yoon Chung