Solid ion conductor compound solid electrolyte comprising the same preparing method thereof and electrochemical cell comprising the same

• Main Authors: PARK YOUNG SIN, RYU, SAE BOM
• Format: Patent
• Language: English; Korean
• Published: 22.06.2022
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOUNDS THEREOF; CONDUCTORS; ELECTRICITY; INORGANIC CHEMISTRY; INSULATORS; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

하기 화학식 1로 표시되며, 아지로다이트 결정구조를 갖는 고체이온전도체, 이를 포함하는 고체전해질, 및 이를 포함하는 전기화학셀을 제시한다. <화학식 1> Li7-2a-b-cMaPS6-a-b-cOaX1bX2c 화학식 1 중, M은 Zn, Cd, Hg 또는 그 조합이며, X1 및 X2는 서로 독립적으로 Cl, Br, I, 슈도할로겐 또는 이들의 조합이고, 0<a<0.5, 0<b<2, 0<c<2, 1<b+c<3이다. Provided are a solid ion conductor represented by Formula 1 and having an argyrodite crystal structure, and a solid electrolyte and an electrochemical cell that include the solid ion conductor:Li7-2a-b-cMaPS6-a-b-cOaX1bX2c   Formula 1wherein, in Formula 1, M is zinc (Zn), cadmium (Cd), mercury (Hg), or a combination thereof,X1 and X2 are each independently chlorine (Cl), bromine (Br), iodine (I), a pseudohalogen, or a combination thereof, andconditions of 0<a<0.5, 0<b<2, 0<c<2, and 1<b+c<3 are satisfied.