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SOLID ELECTROLYTE AND LITHIUM ION BATTERY
PROBLEM TO BE SOLVED: To provide a solid electrolyte capable of securing particle boundary resistance even when sintering is conducted at a relatively low temperature and a lithium ion battery using the solid electrolyte.SOLUTION: A solid electrolyte contains a first electrolyte 31 which is a garnet type or garnet similar type crystalline structure and a second electrolyte 32 which is an ion conductive amorphous structure, the first electrolyte is a lithium composite oxide containing one first metal element selected from group 13 elements in the third period or later and the second electrolyte contains Li and at least two second metal elements selected from group 5 elements in the fifth period or later and group 15 elements in the fifth period or later. Preferably, the solid electrolyte further contains a third electrolyte 33 which consists of oxide containing Li and B and is amorphous. Since it has a constitution where the first electrolyte 31 which is crystalline and the second electrolyte 32 which is amorphous are connected, the effect of reducing resistance generated on a crystal boundary surface compared to the case that the first electrolytes which are crystalline are directly connected each other are obtained.SELECTED DRAWING: Figure 4
【課題】比較的に低温で焼結を行っても粒界抵抗を確保可能な固体電解質及び該固体電解質を用いたリチウムイオン電池の提供。【解決手段】ガーネット型またはガーネット類似型の結晶質である第１電解質３１と、イオン伝導性の非晶質である第２電解質３２と、を含み、第１電解質は、第３周期以上の１３族元素の中から選ばれる１種の第１金属元素を含むリチウム複合酸化物であり、第２電解質は、Ｌｉと、第５周期以上の５族元素または第５周期以上の１５族元素の中から選ばれる少なくとも２種の第２金属元素とを含む固体電解質。Ｌｉ、Ｂを含む酸化物からなる非晶質の第３電解質３３をさらに含むことが好ましい固体電解質。結晶質である第１電解質３１と、非晶質である第２電解質３２とが接合される構成となることから、結晶質である第１電解質同士を直接接合する場合に比べて、結晶界面に生ずる抵抗を減ずる効果が得られる。【選択図】図４
SOLID ELECTROLYTE AND LITHIUM ION BATTERY
PROBLEM TO BE SOLVED: To provide a solid electrolyte capable of securing particle boundary resistance even when sintering is conducted at a relatively low temperature and a lithium ion battery using the solid electrolyte.SOLUTION: A solid electrolyte contains a first electrolyte 31 which is a garnet type or garnet similar type crystalline structure and a second electrolyte 32 which is an ion conductive amorphous structure, the first electrolyte is a lithium composite oxide containing one first metal element selected from group 13 elements in the third period or later and the second electrolyte contains Li and at least two second metal elements selected from group 5 elements in the fifth period or later and group 15 elements in the fifth period or later. Preferably, the solid electrolyte further contains a third electrolyte 33 which consists of oxide containing Li and B and is amorphous. Since it has a constitution where the first electrolyte 31 which is crystalline and the second electrolyte 32 which is amorphous are connected, the effect of reducing resistance generated on a crystal boundary surface compared to the case that the first electrolytes which are crystalline are directly connected each other are obtained.SELECTED DRAWING: Figure 4
【課題】比較的に低温で焼結を行っても粒界抵抗を確保可能な固体電解質及び該固体電解質を用いたリチウムイオン電池の提供。【解決手段】ガーネット型またはガーネット類似型の結晶質である第１電解質３１と、イオン伝導性の非晶質である第２電解質３２と、を含み、第１電解質は、第３周期以上の１３族元素の中から選ばれる１種の第１金属元素を含むリチウム複合酸化物であり、第２電解質は、Ｌｉと、第５周期以上の５族元素または第５周期以上の１５族元素の中から選ばれる少なくとも２種の第２金属元素とを含む固体電解質。Ｌｉ、Ｂを含む酸化物からなる非晶質の第３電解質３３をさらに含むことが好ましい固体電解質。結晶質である第１電解質３１と、非晶質である第２電解質３２とが接合される構成となることから、結晶質である第１電解質同士を直接接合する場合に比べて、結晶界面に生ずる抵抗を減ずる効果が得られる。【選択図】図４
SOLID ELECTROLYTE AND LITHIUM ION BATTERY
固体電解質及びリチウムイオン電池
YAMAMOTO HITOSHI (author) / YOKOYAMA TOMOFUMI (author)
2017-09-21
Patent
Electronic Resource
Japanese
IPC:
H01B
CABLES
,
Kabel
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
/
C04B
Kalk
,
LIME
/
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
SOLID ELECTROLYTE, LITHIUM BATTERY AND LITHIUM AIR BATTERY
| European Patent Office | 2016