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Lithium ion conductor precursor glass and lithium ion conductor

A technology for lithium-ion and lithium-ion batteries, applied in the direction of non-metallic conductors, oxide conductors, lithium batteries, etc., can solve the problems of battery performance degradation, inability to obtain battery ion conductivity, high crystallization temperature, etc.

Active Publication Date: 2020-06-05
OHARA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, in the composition described in Patent Document 1, there is a problem that the crystallization temperature is high, and when it is used together with other components (electrode active materials, etc.), it reacts with other components and causes a decrease in battery performance.
In addition, there is a problem that the ionic conductivity required for battery performance may not be obtained at a temperature that does not react with other components

Method used

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  • Lithium ion conductor precursor glass and lithium ion conductor
  • Lithium ion conductor precursor glass and lithium ion conductor
  • Lithium ion conductor precursor glass and lithium ion conductor

Examples

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Embodiment

[0076] The composition of Examples 1 to 37 of the present invention and the composition of Comparative Example 1, T x The results of the temperature, the heat treatment temperature of the precursor glass, and the lithium ion conductivity of the lithium ion conductor are shown in Tables 1-7. In addition, the following examples are for illustration purposes all the time, and are not limited to these examples.

[0077] Embodiments 1 to 37 and Comparative Example 1 of the present invention shown in Tables 1 to 7 are all selected from oxides, hydroxides, carbonates, nitrates, fluorides, chlorides, High-purity raw materials used in general glass such as ammonium salts and metaphosphoric acid compounds. With the composition of each example shown in Tables 1-7 and the composition of the comparative example, the predetermined glass raw material powder was prepared, and it mixed uniformly. The uniformly mixed glass raw material powder is put into a platinum crucible, and according to ...

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Abstract

As a solid electrolyte used in a lithium ion secondary battery, it has not been possible to obtain a lithium ion conductor precursor glass and a lithium ion conductor in which crystallization progresses at low temperatures and which exhibit high ion conductivity. The present invention can obtain a lithium ion conductor precursor glass and a lithium ion conductor in which crystallization progresseseven at low temperatures and which exhibit high ion conductivity by containing 10-35% of a Li2O component, 20-50% of a P2O5 component, greater than 0% to 15% of an Al2O3 component, 20-50% of a GeO2 component and greater than 0% to 15% of a Bi2O3 component and / or a TeO2 component.

Description

technical field [0001] The invention relates to the technical field of lithium ion conductors, and mainly relates to a lithium ion conductor which is preferably used as a solid electrolyte for lithium ion secondary batteries. Background technique [0002] In recent years, lithium-ion secondary batteries that have a high energy density and are chargeable and dischargeable have been widely used as power supplies for electric vehicles and mobile terminals. [0003] Many lithium-ion secondary batteries currently on the market have relatively high energy density, so liquid electrolytes (electrolytes) such as organic solvents are usually used. The electrolytic solution is used by dissolving a lithium salt in an aprotic organic solvent such as carbonate or cyclic ester. [0004] However, lithium ion secondary batteries using a liquid electrolyte (electrolyte) have a risk of electrolyte leakage. In addition, organic solvents and the like generally used in electrolytic solutions ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/17C03C10/04H01B1/06H01B1/08H01M4/13H01M4/62H01M10/052H01M10/0562
CPCH01M4/13H01M4/62H01M10/052H01M10/0562C03C3/17H01B1/06H01B1/08Y02E60/10H01M2300/0068C03C3/16C03C10/00C03C4/18C03C3/122H01M2300/0071C03C1/00C03C4/14C03C2204/00H01M10/0525
Inventor 大野友美
Owner OHARA
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