LITHIUM ION CONDUCTOR AND ELECTRICITY STORAGE DEVICE

• Main Authors: SAWANAGA KAHO, TAKEUCHI YUKI, KANEKO MASAHIDE, KONDO AYAKO, HIKOSAKA HIDEAKI
• Format: Patent
• Language: English; Japanese
• Published: 15.02.2021
• Subjects: ARTIFICIAL STONE; BASIC ELECTRIC ELEMENTS; CABLES; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CONDUCTORS; ELECTRICITY; INSULATORS; LIME, MAGNESIA; METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REFRACTORIES; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SLAG; TREATMENT OF NATURAL STONE

To sufficiently improve lithium ion conductivity of a lithium ion conductor.SOLUTION: The lithium ion conductor contains lithium ion conductive powder having a garnet type structure containing at least Li, La, Zr, and O. The lithium ion conductor further contains an ionic liquid having lithium ion conductivity. When an atomic concentration of each element is specified by X-ray photoelectron spectroscopy (XPS), a ratio R1(=C2/C1) of a total atomic concentration C2 of each element of specified elements to a total concentration C1 of each atomic concentration of Li element, La element, and Zr element is 0.25 to 0.90, the specified elements referring to those among elements contained in the ionic liquid (however, excluding O element and C element), which are not contained in the lithium ion conductive powder.SELECTED DRAWING: Figure 1 【課題】リチウムイオン伝導体のリチウムイオン伝導性を十分に向上させる。【解決手段】リチウムイオン伝導体は、ＬｉとＬａとＺｒとＯとを少なくとも含有するガーネット型構造を有するリチウムイオン伝導性粉末を含む。リチウムイオン伝導体は、さらに、リチウムイオン伝導性を有するイオン液体を含む。Ｘ線光電子分光法（ＸＰＳ）により各元素の原子濃度を特定したとき、イオン液体に含有される元素（ただし、Ｏ元素およびＣ元素を除く）の内のリチウムイオン伝導性粉末に含有されない元素である特定元素と、Ｌｉ元素とＬａ元素とＺｒ元素とのそれぞれの原子濃度の合計Ｃ１に対する、特定元素のそれぞれの原子濃度の合計Ｃ２の割合Ｒ１（＝Ｃ２／Ｃ１）が、０．２５以上、０．９０以下である。【選択図】図１