F<->, Zn<2+>, and B<3+> co-doped NASICON type solid lithium-ion electrolyte

A solid electrolyte, lithium ion technology, applied in circuits, electrical components, secondary batteries, etc., can solve the problem that the conductivity of non-thin-film lithium ion batteries cannot be well satisfied with the electrolyte, and increase the Li+ migration ability and weaken the bonding force. , the effect of reducing steric hindrance

Inactive Publication Date: 2012-05-16
NINGBO UNIV
View PDF2 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the room temperature lithium ion conductivity of these systems is usually in the range of 10 -4 S/cm-10 -6

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
  • F&lt;-&gt;, Zn&lt;2+&gt;, and B&lt;3+&gt; co-doped NASICON type solid lithium-ion electrolyte
  • F&lt;-&gt;, Zn&lt;2+&gt;, and B&lt;3+&gt; co-doped NASICON type solid lithium-ion electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0010] Example 1: Combine ZnO:LiF:B 2 O 3 : TiO 2 : NH 4 H 2 PO 4 : Li 2 CO 3 The ratio of 0.1:0.1:0.05:1.9:2.9:0.6 (molar ratio) is uniformly mixed, 3% 95% ethanol is added, and ball milled in a ball mill at 100 rpm for 15 hours. After the ball milling is completed, vacuum at 60°C Dry in an oven (vacuum 20 Pa) for 3 hours, take it out and re-grind in an agate mill for 30 minutes. The ground powder is heated at a rate of 6°C / min to 700°C for 6 hours to form a solid electrolyte powder. The powder is mixed with 2wt% binder (PVC) and kept under a pressure of 250MPa for 2 minutes to form a sheet. The sheet is heated to 800°C for 10 hours at a rate of 10°C / min in a nitrogen atmosphere to produce lithium Ionic solid electrolyte sheet.

Example Embodiment

[0011] Example 2: ZnO:LiF:B 2 O 3 : GeO 2 : NH 4 H 2 PO 4 : Li 2 CO 3 The ratio of 0.3:0.15:0.1:1.7:2.8:0.85 (molar ratio) is uniformly mixed, 9% of 95% ethanol is added, and the ball mill is ball milled at 450 rpm for 45 hours in a ball mill. After the ball milling is completed, vacuum at 80°C Dry in an oven (vacuum 95 Pa) for 9 hours, take it out and grind it again in an agate mill for 30 minutes. The ground powder is heated at a rate of 25°C / min to 950°C for 15 hours to form a solid electrolyte powder. The powder is mixed with 5wt% binder (PVC) and kept under a pressure of 450MPa for 6 minutes to form a sheet. The sheet is heated to 1000°C for 10 hours at a rate of 25°C / min in a nitrogen atmosphere to produce lithium Ionic solid electrolyte sheet.

Example Embodiment

[0012] Example 3: ZnO:LiF:B 2 O 3 : ZrO 2 : NH 4 H 2 PO 4 : Li 2 CO 3 The ratio is 0.5:0.2:0.15:1.5:2.7:1.1 (molar ratio) and mixed uniformly, adding 5% 95% ethanol, ball milling in a ball mill at 300 rpm for 30 hours, and vacuuming at 75°C after the milling Dry in an oven (vacuum 50 Pa) for 6 hours, take it out and regrind it in an agate mill for 20 minutes. The ground powder is heated at a rate of 10°C / min to 850°C for 12 hours to form a solid electrolyte powder. The powder is mixed with 2.6wt% binder (PVA) and kept under a pressure of 400MPa for 4 minutes to form a flake. The flake is heated to 900℃ for 7 hours under a nitrogen atmosphere at a rate of 15℃ / min. Lithium ion solid electrolyte sheet.

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
Conductivityaaaaaaaaaa
Login to view more

Abstract

The invention relates to an F<->, Zn<2+>, and B<3+> co-doped NASICON type solid lithium-ion electrolyte, which is characterized by having a stoichiometric equation of Li1+2x+2z-yZnxBzM2-xP3-zO12-yFy, wherein, x=0.1-0.5; y=0.1-0.2; z=0.1-0.3; M is one of Ti, Ge and Zr. According to the invention, ZnO, LiF, B2O3, MO2 (M=Ti, Ge, Zr), NH4H2PO4, and Li2CO3 are mixed uniformly in a mole ratio of 0.1-0.5:0.1-0.2:0.05-0.15:1.5-1.9:2.7-2.9:0.5-1.2, then the obtained mixture is subjected to ball milling, pressing and sintering, thus obtaining a solid lithium-ion electrolyte with room temperature lithium ion conductivity higher than 9.10<-4>S/cm.

Description

technical field [0001] The invention relates to the field of manufacturing a solid lithium ion electrolyte. Background technique [0002] Lithium-ion batteries have absolute advantages such as high volume, high weight-to-energy ratio, high voltage, low self-discharge rate, no memory effect, long cycle life, and high power density. They have an annual share of more than 30 billion US dollars in the global mobile power market and far exceed other The market share of batteries is the most promising chemical power source [Wu Yuping, Wan Chunrong, Jiang Changyin, Lithium-ion Secondary Batteries, Beijing: Chemical Industry Press, 2002.]. At present, most of the lithium-ion secondary batteries at home and abroad use liquid electrolytes. Liquid lithium-ion batteries have some disadvantages, such as: liquid organic electrolytes may leak, and may explode at too high a temperature, causing safety accidents, and cannot be used in some applications. Occasions with high safety requiremen...

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
IPC IPC(8): H01M10/0562
CPCY02E60/12Y02E60/10
Inventor 水淼舒杰任元龙徐丹郑卫东任政娟王青春黄峰涛
Owner NINGBO UNIV
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