Li-ion conductors, solid electrolyte layers, electrodes, batteries and electronic devices

Abstract

The lithium ion conductor includes: a first lithium ion conductor containing at least one substance selected from oxide crystals and glass ceramics; and a second lithium ion conductor having a sintering temperature of 600° C. or less. The lithium ion conductivity of the first lithium ion conductor is higher than the lithium ion conductivity of the second lithium ion conductor.

Description

technical field [0001] This technology relates to lithium ion conductors, solid electrolyte layers, electrodes, batteries and electronic devices. Background technique [0002] As for oxide-based solid electrolytes used in all-solid batteries, crystals (perovskite type and garnet type), glass ceramics, and the like are known to have high ion conductivity. However, in both crystals and glass ceramics, in order to achieve high ion conductivity, it is necessary to sinter the solid electrolyte at a high temperature of not lower than 700°C. [0003] In the case of using a solid electrolyte for a battery electrode, generally, it is necessary to fire a composite body containing an electrode active material and a solid electrolyte, thereby sintering the solid electrolyte. However, if the sintering temperature is as high as above, the electrode active material and the solid electrolyte or oxygen in the air may react with each other in the composite firing step. To limit this reactio...

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Problems solved by technology

However, if the sintering temperature is as high as above, the electrode active material and the solid electrolyte or oxygen in the air may react with each other during the composite firing step

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