Solid electrolyte

A technology of solid electrolyte and electrolyte layer, applied in electrolytes, non-aqueous electrolyte batteries, circuits, etc., can solve problems such as reduced ionic conductivity

Inactive Publication Date: 2014-07-30
IDEMITSU KOSAN CO LTD
View PDF26 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the technology of Patent Document 2, although the hydrolyzability is lowered, the ionic conductivity is greatly lowered

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solid electrolyte
  • Solid electrolyte
  • Solid electrolyte

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0230] Production example 1 [lithium sulfide (Li 2 S) Manufacture, purification]

[0231] Lithium sulfide was produced and purified in the same manner as the method described in the Examples of International Publication No. 2005 / 040039 pamphlet.

[0232] Specifically, it performed as follows.

[0233] (1) Lithium sulfide (Li 2 S) Manufacture

[0234] Lithium sulfide is produced according to the method of the first embodiment (two-step method) of JP-A-7-330312. Specifically, 3326.4 g (33.6 moles) of N-methyl-2-pyrrolidone (NMP) and 287.4 g (12 moles) of lithium hydroxide were added to a 10-liter autoclave with a stirring paddle, and the temperature was raised to 130 ° C at 300 rpm . After the temperature was raised, hydrogen sulfide was blown into the liquid at a supply rate of 3 liters / minute for 2 hours.

[0235] Next, the temperature of the reaction solution was raised under nitrogen flow (200 cc / min), and a part of the reacted hydrogen sulfide was dehydrogenated. As ...

manufacture example 2

[0239] Production Example 2 [Sulfide-based solid electrolyte glass (Li 2 S / P 2 S 5 (Molar ratio) = 75 / 25) Manufacture - Mechanical ball milling method -]

[0240] Using the lithium sulfide produced in Production Example 1, a sulfide-based glass was produced by the method in accordance with Example 1 of WO 07 / 066539 pamphlet.

[0241] Specifically, it was performed as follows.

[0242] 0.383 g (0.00833 mol) of lithium sulfide produced in Production Example 1 and 0.618 g (0.00278 mol) of phosphorus pentasulfide (manufactured by Aldrich) were thoroughly mixed. Then, put this mixed powder together with 10 zirconia balls with a diameter of 10 mm into a planetary ball mill (manufactured by Fritsch Japan Co., Ltd.: model P-7) into an alumina tank and completely seal it. The alumina tank was filled with nitrogen to form a nitrogen atmosphere.

[0243] Then, the planetary ball mill was rotated at a low speed (85 rpm) for the first few minutes to thoroughly mix lithium sulfide and ...

manufacture example 3

[0248] Production Example 3 [Sulfide-based solid electrolyte glass (Li 2 S / P 2 S 5 (Molar ratio) = 75 / 25) production - slurry method -]

[0249] Using the lithium sulfide produced in Production Example 1, a sulfide-based glass was produced by the same method as in Example 1 of JP-A-2010-140893.

[0250] Specifically, it performed as follows.

[0251] use figure 1 The shown apparatus 1 produces sulfide-based glass ceramics. As the mixer 10, Star mill mini Tse A (0.15 L) (bead mill) manufactured by Ashizawa Finetech Ltd. was used, and 450 g of 0.5 mmφ zirconia balls were charged. As the reaction tank 20, a 1.5 L glass reactor equipped with a stirrer was used.

[0252] A mixture obtained by adding 1080 g of dehydrated toluene (moisture content 8 ppm) produced by Hiroshima Wako Pure Chemical Industries, Ltd. to 45.90 g (75 mol%) of lithium sulfide produced in Production Example 1 and 74.10 g (25 mol %) of phosphorus pentasulfide produced by Aldrich Co., Ltd. In the reaction t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
electrical conductivityaaaaaaaaaa
electrical conductivityaaaaaaaaaa
electrical conductivityaaaaaaaaaa
Login to view more

Abstract

This solid electrolyte contains lithium, phosphorus, and sulfur as constituent components, has a peak (first peak) in the region of 81.0-88.0 ppm inclusive in a 31P-NMR spectrum, either does not have a peak in the regions other than the 81.0-88.0 ppm inclusive region or even if there is a peak the peak strength ratio with respect to the first peak is no greater than 0.5, and has an ion conductivity of at least 510-4 S / cm.

Description

technical field [0001] The present invention relates to solid electrolytes, and electrolyte layers, electrodes and batteries produced using them. Background technique [0002] In the field of all-solid-state batteries, sulfide-based solid electrolyte materials are conventionally known. For example, it is reported in Patent Document 1 that Li 2 S and P 2 S 5 Mixing at a specific molar ratio (68:32~73:27), and performing mechanical ball milling and heat treatment, so as to obtain high ionic conductivity (~2×10 -3 S / cm) glass ceramic electrolyte particles. [0003] However, the material of Patent Document 1 easily generates hydrogen sulfide (hydrolysis) when in contact with water, and its use in a high dew point environment is limited. [0004] Known to be Li 2 S and P 2 S 5 Glass electrolyte particles mixed at a molar ratio of 75:25 and subjected to mechanical ball milling are difficult to be hydrolyzed (for example, Patent Document 2). However, in the technique of Pa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562H01B1/06H01M4/62
CPCH01B1/06H01M10/052H01M10/0525H01M10/0562H01M2300/002Y02E60/10
Inventor 樋口弘幸
Owner IDEMITSU KOSAN CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap