Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Electric field induced crystallization P<5+>, Al<3+> and Be<2+> synergistically doped K2MgSi5O12 potassium fast ion conductor and preparation method thereof

An electric field-induced, ionic conductor technology, used in circuits, electrolytes, electrical components, etc., to speed up crystallization, reduce migration activation energy, and reduce grain boundary voids

Inactive Publication Date: 2019-10-25
NINGBO UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the potassium ion conductors that are essential for the construction of potassium ion all-solid-state batteries are still basically blank.

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
  • Electric field induced crystallization P&lt;5+&gt;, Al&lt;3+&gt; and Be&lt;2+&gt; synergistically doped K2MgSi5O12 potassium fast ion conductor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: the solid K 2 CO 3 : NH 4 h 2 PO 4 :MgO:Al 2 o 3 : SiO 2 : BeO according to K 2.13 MgB 0.05 Al 0.05 P 0.02 Si 4.88 o 12 The ratio of the stoichiometric molar ratio is evenly mixed, adding quality is the dehydrated alcohol of mixture quality 3%, in ball mill with the rotating speed ball mill of 120 rev / mins 10 hours, after ball mill finishes, in 60 ℃ of vacuum ovens (gas pressure in oven is at 5 Pa) for 3 hours, take it out and re-grind in an agate mortar for 12 minutes, the ground powder is heated to 550 ° C at a rate of 7 ° C / min in the air atmosphere and then cooled with the furnace for 3 hours; The powder was ground again in an agate mortar for 10 minutes, and the ground powder was heated up to 1250 °C at a rate of 5 °C / min in a platinum crucible in an air atmosphere and kept for 25 hours, then taken out of the furnace and cooled rapidly; the cooled The material was pulverized and ground for 30 minutes in the mill, soaked in 0.1M sodium h...

Embodiment 2

[0012] Embodiment 2: the solid K 2 CO 3 : NH 4 h 2 PO 4 :MgO:Al 2 o 3 : SiO 2 : BeO according to K 2.4 MgB 0.15 Al 0.15 P 0.05 Si 4.65 o 12 The ratio of the stoichiometric molar ratio is uniformly mixed, adding quality is the dehydrated alcohol of mixture quality 9%, in ball mill with the rotating speed ball mill of 450 rev / mins 50 hours, after ball mill finishes, in 110 ℃ of vacuum ovens (gas pressure in oven is at 20Pa) for 10 hours, take it out and re-grind in an agate mortar for 30 minutes, the ground powder is heated to 650°C at a rate of 30°C / min in the air atmosphere and then cooled with the furnace for 10 hours; The powder was ground again in an agate mortar for 30 minutes, and the ground powder was heated up to 1350°C in a platinum crucible in an air atmosphere at a rate of 13°C / min and kept at 1350°C for 45 hours, then taken out of the furnace and cooled rapidly; the cooled The material was pulverized and ground for 50 minutes in the mill, soaked in 0.3M...

Embodiment 3

[0013] Embodiment 3: the solid K 2 CO 3 : NH 4 h 2 PO 4 :MgO:Al 2 o 3 : SiO 2 : BeO according to K 2.27 MgB 0.1 Al 0.1 P 0.03 Si 4.77 o 12 The ratio of the stoichiometric molar ratio is uniformly mixed, adding quality is the dehydrated alcohol of mixture quality 6%, in ball mill with the rotating speed ball mill of 300 rev / mins 30 hours, after ball mill finishes, in 100 ℃ of vacuum ovens (gas pressure in oven is at 15Pa) for 6 hours, take it out and re-grind in an agate mortar for 20 minutes, the ground powder is heated to 600°C at a rate of 20°C / min in an air atmosphere and then cooled with the furnace for 7 hours; The powder was ground again in an agate mortar for 20 minutes, and the ground powder was heated up to 1300°C in a platinum crucible in an air atmosphere at a rate of 10°C / min and kept at 1300°C for 35 hours, then taken out of the furnace and cooled rapidly; the cooled The material was pulverized and ground for 40 minutes in the mill, soaked in 0.2M sod...

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

No PUM Login to View More

Abstract

The invention discloses an electric field induced crystallization P<5+>, Al<3+> and Be<2+> synergistically doped K2MgSi5O12 potassium fast ion conductor and a preparation method thereof. The electricfield induced crystallization P<5+>, Al<3+> and Be<2+> synergistically doped K2MgSi5O12 potassium fast ion conductor is characterized in that a stoichiometric formula is K<2+2x+y-z>MgBe<x>Al<y>P<z>Si<5-x-y-z>O<12>, wherein x=0.05-0.15; y=0.05-0.15; z=0.02-0.05; and the potassium ion conductivity at a room temperature exceeds 5.10<-4>S / cm. Al<3+> and Be<2+> are used for partially substituting Si<4+> ions, and interstitial potassium ions are generated in a crystal to reduce the migration activation energy of the potassium ions; the electron conductivity of the fast ion conductor is further reduced by doping P<5+>; the size of migration channels of the potassium ions is adjusted by doping Be<2+> with a small ionic radius to adapt to the rapid migration of the potassium ions; and the surface of K2MgSi5O12 particles is modified during the preparation to form an easy-sintering property. Meanwhile, the introduction of a strong direct current electric field induces crystallization to accelerate the crystallization rate, lower the crystallization temperature and increase the crystal integrity. The synergistic effects enable the normal temperature potassium ion conductivity of the potassiumfast ion conductor to exceed 5*10<-4>S / cm and to be closer to the potassium ion conductivity of a liquid electrolyte.

Description

technical field [0001] The invention relates to the field of manufacturing a solid potassium fast ion conductor. 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 requi...

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): C01B33/26H01M10/054H01M10/0562
CPCC01B33/26C01P2002/72C01P2004/80H01M10/054H01M10/0562H01M2300/0071Y02E60/10
Inventor 水淼舒杰任元龙
Owner NINGBO UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com