Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
LLZO LLZO METHOD OF PREPARING LLZO SOLID ELECTROLYTE LLZO SOLID ELECTROLYTE AND ALL SOLID STATE LITHIUM ION BATTERY COMPRISING THE SAME
The present invention relates to a method for preparing a lithium lanthanum zirconium oxide (LLZO) solid electrolyte, the lithium lanthanum zirconium oxide (LLZO) solid electrolyte, and an all-solid-state lithium secondary battery including the same. The method for preparing a lithium lanthanum zirconium oxide (LLZO) solid electrolyte according to an embodiment of the present invention comprises the following steps of: preparing a first sol composition by adding a first substitutional doping material to a first mixed solution in which a Li raw material and La raw material are dissolved in a solvent, and then synthesizing the same in a sol form; preparing a second sol composition by adding a second substitutional doping material to a second mixed solution in which a Zr raw material and a catalyst are dissolved in a solvent, and then synthesizing the same in a sol form; gelating the first sol composition and the second sol composition, respectively, and then pre-calcining the same to prepare respective powders; milling, mixing, pulverizing, and calcining the respective powders to form a substitution material-doped LLZO powder; and molding the substitution material-doped LLZO powder to form a molded body, and sintering the molded body. According to the present invention, composition change of the solid electrolyte is easy, and a process is possible at low temperature to prevent degradation of properties of the LLZO material.
본 발명은 리튬 란타늄 지르코늄 산화물(LLZO) 고체전해질의 제조방법, 리튬 란타늄 지르코늄 산화물(LLZO) 고체전해질 및 이를 포함하는 전고체 리튬이차전지에 관한 것으로, 본 발명의 일 실시예에 따른 리튬 란타늄 지르코늄 산화물(LLZO) 고체전해질의 제조방법은, Li 원료 및 La 원료를 용매에 용해시킨 제1 혼합 용액에 제1 치환 도핑 물질을 첨가한 후 졸(sol) 형태로 합성하여 제1 졸 조성물을 준비하는 단계; Zr 원료 및 촉매제를 용매에 용해시킨 제2 혼합 용액에 제2 치환 도핑 물질을 첨가한 후 졸 형태로 합성하여 제2 졸 조성물을 준비하는 단계; 상기 제1 졸 조성물 및 상기 제2 졸 조성물을 각각 겔화(gelation)한 후 전-하소하여 각각의 분말을 준비하는 단계; 상기 각각의 분말을 밀링하여 혼합 및 분쇄하고 하소하여 치환 물질-도핑된 LLZO 분말을 형성하는 단계; 및 상기 치환 물질-도핑된 LLZO 분말을 성형하여 성형체를 형성하고, 상기 성형체를 소결하는 단계;를 포함한다.
LLZO LLZO METHOD OF PREPARING LLZO SOLID ELECTROLYTE LLZO SOLID ELECTROLYTE AND ALL SOLID STATE LITHIUM ION BATTERY COMPRISING THE SAME
The present invention relates to a method for preparing a lithium lanthanum zirconium oxide (LLZO) solid electrolyte, the lithium lanthanum zirconium oxide (LLZO) solid electrolyte, and an all-solid-state lithium secondary battery including the same. The method for preparing a lithium lanthanum zirconium oxide (LLZO) solid electrolyte according to an embodiment of the present invention comprises the following steps of: preparing a first sol composition by adding a first substitutional doping material to a first mixed solution in which a Li raw material and La raw material are dissolved in a solvent, and then synthesizing the same in a sol form; preparing a second sol composition by adding a second substitutional doping material to a second mixed solution in which a Zr raw material and a catalyst are dissolved in a solvent, and then synthesizing the same in a sol form; gelating the first sol composition and the second sol composition, respectively, and then pre-calcining the same to prepare respective powders; milling, mixing, pulverizing, and calcining the respective powders to form a substitution material-doped LLZO powder; and molding the substitution material-doped LLZO powder to form a molded body, and sintering the molded body. According to the present invention, composition change of the solid electrolyte is easy, and a process is possible at low temperature to prevent degradation of properties of the LLZO material.
본 발명은 리튬 란타늄 지르코늄 산화물(LLZO) 고체전해질의 제조방법, 리튬 란타늄 지르코늄 산화물(LLZO) 고체전해질 및 이를 포함하는 전고체 리튬이차전지에 관한 것으로, 본 발명의 일 실시예에 따른 리튬 란타늄 지르코늄 산화물(LLZO) 고체전해질의 제조방법은, Li 원료 및 La 원료를 용매에 용해시킨 제1 혼합 용액에 제1 치환 도핑 물질을 첨가한 후 졸(sol) 형태로 합성하여 제1 졸 조성물을 준비하는 단계; Zr 원료 및 촉매제를 용매에 용해시킨 제2 혼합 용액에 제2 치환 도핑 물질을 첨가한 후 졸 형태로 합성하여 제2 졸 조성물을 준비하는 단계; 상기 제1 졸 조성물 및 상기 제2 졸 조성물을 각각 겔화(gelation)한 후 전-하소하여 각각의 분말을 준비하는 단계; 상기 각각의 분말을 밀링하여 혼합 및 분쇄하고 하소하여 치환 물질-도핑된 LLZO 분말을 형성하는 단계; 및 상기 치환 물질-도핑된 LLZO 분말을 성형하여 성형체를 형성하고, 상기 성형체를 소결하는 단계;를 포함한다.
LLZO LLZO METHOD OF PREPARING LLZO SOLID ELECTROLYTE LLZO SOLID ELECTROLYTE AND ALL SOLID STATE LITHIUM ION BATTERY COMPRISING THE SAME
리튬 란타늄 지르코늄 산화물(LLZO) 고체전해질의 제조방법, 리튬 란타늄 지르코늄 산화물(LLZO) 고체전해질 및 이를 포함하는 전고체 리튬이차전지
LEE HEE CHUL (Autor:in) / KIM MIN JI (Autor:in) / KIM SO WON (Autor:in)
31.08.2022
Patent
Elektronische Ressource
Koreanisch
IPC:
C04B
Kalk
,
LIME
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
H01M
Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
,
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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