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Battery separator, lithium battery and methods for producing them
Provided are a battery separator with less voids, a lithium battery comprising the battery separator, and methods for producing them. A battery separator comprising an oxide electrolyte sintered body and a resin, wherein the oxide electrolyte sintered body has grain boundaries between crystal particles of a garnet-type ion-conducting oxide; wherein a number average particle diameter of the crystal particles is 3 μm or less; and wherein the oxide electrolyte sintered body satisfies the following formula 1:Rgb/(Rb+Rgb)≤0.6 Formula 1where Rb is an intragranular resistance value that is an ion conductivity resistance inside the crystal particles, and Rgb is a grain boundary resistance value that is an ion conductivity resistance of the grain boundaries between the crystal particles.
Battery separator, lithium battery and methods for producing them
Provided are a battery separator with less voids, a lithium battery comprising the battery separator, and methods for producing them. A battery separator comprising an oxide electrolyte sintered body and a resin, wherein the oxide electrolyte sintered body has grain boundaries between crystal particles of a garnet-type ion-conducting oxide; wherein a number average particle diameter of the crystal particles is 3 μm or less; and wherein the oxide electrolyte sintered body satisfies the following formula 1:Rgb/(Rb+Rgb)≤0.6 Formula 1where Rb is an intragranular resistance value that is an ion conductivity resistance inside the crystal particles, and Rgb is a grain boundary resistance value that is an ion conductivity resistance of the grain boundaries between the crystal particles.
Battery separator, lithium battery and methods for producing them
NAKANISHI SHINJI (author) / OHTA SHINGO (author)
2022-02-15
Patent
Electronic Resource
English
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