Lanthanum oxide doped oxynitride glass for solid electrolyte and preparation method of lanthanum oxide doped oxynitride glass

A technology of solid electrolyte and oxynitride glass, which is applied in electrolytes, electrochemical generators, circuits, etc., can solve the problems of narrow electrochemical window, limited application range, poor electrochemical and chemical stability, etc., and achieves simple preparation process and satisfactory Industrial production requirements, good thermal stability

Inactive Publication Date: 2017-01-18
CENT SOUTH UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oxide glass electrolytes have low ionic conductivity and good electrochemical and chemical stability, while sulfide glass electrolytes have high ionic conductivity but poor electrochemical and chemical stability and a narrow electrochemical window. limit its scope of application

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
  • Lanthanum oxide doped oxynitride glass for solid electrolyte and preparation method of lanthanum oxide doped oxynitride glass
  • Lanthanum oxide doped oxynitride glass for solid electrolyte and preparation method of lanthanum oxide doped oxynitride glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Recipe: Li 2 O: 46.0mol%, P 2 o 5 : 46.0mol%, La 2 o 3 : 4.0 mol%, AlN: 4.0 mol%.

[0055] (1) According to the design composition of the specific oxynitride glass, the La 2 o 3 , Li 2 CO 3 , NH 4 h 2 PO 4 and AlN and other raw materials are converted into mass percentages, and the corresponding raw materials are accurately weighed. The AlN raw materials are first placed in a drying dish, and the rest of the powdery raw materials are ball milled, mixed, and passed through a 200-mesh sieve;

[0056] (2) Melt the mixture made from raw materials other than AlN at about 900°C and then quench it with water to obtain phosphate glass particles, which will be crushed into phosphate glass powder after drying;

[0057] (3) After mixing the phosphate glass powder and the AlN powder, ball milling, mixing and drying, passing through a 200-mesh sieve to prepare the AlN-phosphate glass batch;

[0058] (4) At room temperature, first vacuumize the furnace, then pour nitrogen...

Embodiment 2

[0062] Recipe: Li 2 O: 48.0mol%, Al 2 o 3 : 2mol%, P 2 o 5 : 44.0mol%, La 2 o 3 : 2.0 mol%, AlN: 4.0 mol%.

[0063] (1) According to the design composition of the specific oxynitride glass, the La 2 o 3 , Li 2 CO 3 、Al 2 o 3 , NH 4 h 2 PO 4 and AlN and other raw materials, converted into mass percentages, accurately weigh the corresponding raw materials of each composition, put the AlN raw materials in a drying dish first, and ball mill the rest of the powdery raw materials, mix them, and pass through a 200-mesh sieve;

[0064] (2) Melt the mixture made from raw materials other than AlN at about 900°C and then quench it with water to obtain phosphate glass particles, which will be crushed into phosphate glass powder after drying;

[0065] (3) After mixing the phosphate glass powder and the AlN powder, ball milling, mixing and drying, passing through a 200-mesh sieve to prepare the AlN-phosphate glass batch;

[0066] (4) At room temperature, first vacuumize the ...

Embodiment 3

[0070] Recipe: Li 2 O: 47.0mol%, Al 2 o 3 : 1mol%, P 2 o 5 : 45.0mol%, La 2 o 3 : 4.0 mol%, AlN: 3.0 mol%.

[0071] (1) According to the design composition of the specific oxynitride glass, the La 2 o 3 , Li 2 CO 3 、Al 2 o 3 , NH 4 h 2 PO 4 and AlN and other raw materials, converted into mass percentages, accurately weigh the corresponding raw materials of each composition, put the AlN raw materials in a drying dish first, and ball mill the rest of the powdery raw materials, mix them, and pass through a 200-mesh sieve;

[0072] (2) Melt the mixture made from raw materials other than AlN at about 900°C and then quench it with water to obtain phosphate glass particles, which will be crushed into phosphate glass powder after drying;

[0073] (3) After mixing the phosphate glass powder and the AlN powder, ball milling, mixing and drying, passing through a 200-mesh sieve to prepare the AlN-phosphate glass batch;

[0074] (4) At room temperature, first vacuumize the ...

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
particle sizeaaaaaaaaaa
electrical conductivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses lanthanum oxide doped oxynitride glass for solid electrolyte and a preparation method of the lanthanum oxide doped oxynitride glass. The lanthanum oxide doped oxynitride glass is prepared from La2O3, Li2CO3, Al2O3, AlN and NH4H2PO4 through high-temperature melting and annealing treatment. The lanthanum oxide doped oxynitride glass is relatively simple in preparation process, gentle in process condition and relatively low in raw material cost, the dissolving rate of the prepared lanthanum oxide doped oxynitride glass in water is as low as 3.67*10<-5>g.cm<-2>.min<-1>, the maximum room-temperature ion conductivity is 1.47*10<-5>S.cm<-1>, and moreover the melting temperature is relatively low (about 1100 DEG C); due to introduction of lanthanum oxide, the ion conductivity of the lanthanum oxide doped oxynitride glass is increased, and moreover the lanthanum oxide doped oxynitride glass is good in chemical stability. A large-piece glass material can be prepared, and the lanthanum oxide doped oxynitride glass can be applied to fields such as solid electrolyte of a full-solid lithium ion battery.

Description

technical field [0001] The invention relates to a lanthanum oxide-doped oxynitride glass used in solid electrolytes and a preparation method thereof, in particular to an oxynitride glass material with high lithium ion conductivity and a preparation method thereof, belonging to the field of electrolyte materials. Background technique [0002] At present, the development of lithium-ion battery electrolyte materials lags far behind the development of positive and negative electrode materials, which has become a bottleneck in the development of lithium-ion battery preparation technology. As the key material of lithium-ion batteries, the electrolyte plays the role of transporting and conducting current between the positive and negative electrodes of the battery, and is a bridge connecting the positive and negative materials. The choice of electrolyte determines the working mechanism of lithium-ion batteries to a large extent, and greatly affects the specific energy, safety, cycle...

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 & AuthorityApplications(China)
IPC IPC(8): H01M10/0562H01M10/0525
CPCH01M10/0525H01M10/0562H01M2300/002H01M2300/0071Y02E60/10
Inventor罗志伟张静卢安贤于静波汤裕郑章宏
OwnerCENT SOUTH UNIV