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

Hybrid-phase structure layered oxide material and preparation method and application thereof

A technology of oxides and structural layers, applied in the field of materials, can solve problems such as rising battery costs

Inactive Publication Date: 2019-04-05
INST OF PHYSICS - CHINESE ACAD OF SCI
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also directly leads to the increase of battery cost

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
  • Hybrid-phase structure layered oxide material and preparation method and application thereof
  • Hybrid-phase structure layered oxide material and preparation method and application thereof
  • Hybrid-phase structure layered oxide material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Embodiment 1 of the present invention provides a layered oxide material with mixed phase structure, the general chemical formula is: Na x Ni i Fe j mn k m y o 2+β .

[0065] Among them, M is an element for doping and replacing the transition metal site, specifically Li + , Cu 2+ , Mg 2+ , Mn 2+ , Zn 2+ ,Co 2 + , Ca 2+ , Ba 2+ ,Sr 2+ , Mn 3+ , Al 3+ , B 3+ , Cr 3+ ,Co 3+ , V 3+ , Zr 4+ , Ti 4+ , Sn 4+ , V 4+ , Mo 4+ , Mo 5+ , Ru 4+ , Nb 5+ , Si 4+ , Sb 5+ , Nb5+ , Mo 6+ , Te 6+ one or more of

[0066] x, y, i, j, k, and β are the molar percentages of the corresponding elements; the relationship between x, y, i, j, k, and β satisfies y+i+j+k=1, and x +my+2i+3j+4k=2(2+β); where 0.6≤x≤0.9; 0<i≤0.3; 0<j≤0.5; 0<k≤0.5; -0.02≤β≤0.02; m is the valence state of M; in a preferred embodiment, 0.76≤x≤0.8; 0.1<i≤0.3; 0<j≤0.5; 0<k≤0.5; -0.02≤β≤0.02.

[0067] The structure of the mixed-phase layered oxide is a mixed phase of P2 and O3, and the space g...

Embodiment 2

[0070] Embodiment 2 of the present invention provides a method for preparing a layered oxide material with a mixed phase structure, which is a solid phase method, such as figure 2 shown, including:

[0071] Step 210, mixing sodium carbonate with a stoichiometric amount of 100wt% to 108wt% of sodium and required stoichiometric amounts of nickel oxide, iron oxide, manganese oxide and M oxide in proportion to form a precursor;

[0072] M is specifically Li + , Cu 2+ , Mg 2+ , Mn 2+ , Zn 2+ ,Co 2+ , Ca 2+ , Ba 2+ ,Sr 2+ , Mn 3+ , Al 3+ , B 3+ , Cr 3+ ,Co 3+ , V 3+ , Zr 4+ , Ti 4+ , Sn 4+ , V 4+ , Mo 4+ , Mo 5+ , Ru 4+ , Nb 5+ , Si 4+ , Sb 5+ , Nb 5+ , Mo 6+ , Te 6+ one or more of

[0073] Step 220, uniformly mixing the precursor by ball milling to obtain precursor powder;

[0074] Step 230, placing the precursor powder in a muffle furnace, and heat-treating it in an air atmosphere at 700° C. to 1000° C. for 2 to 24 hours;

[0075] Step 240, grinding ...

Embodiment 3

[0077] Embodiment 3 of the present invention provides a preparation method of a layered oxide material with a mixed phase structure, spray drying method, such as image 3 shown, including:

[0078] Step 310, mix the required stoichiometric sodium carbonate of 100wt%-108wt% sodium carbonate and the required stoichiometric nickel oxide, iron oxide, manganese oxide and M oxide in proportion to form a precursor; or use the corresponding stoichiometric ratio Sodium nitrate, nickel nitrate, iron nitrate, manganese acetate and M nitrate are precursors;

[0079] The M is specifically Li + , Cu 2+ , Mg 2+ , Mn 2+ , Zn 2+ ,Co 2+ , Ca 2+ , Ba 2+ ,Sr 2+ , Mn 3+ , Al 3+ , B 3+ , Cr 3+ ,Co 3 + , V 3+ , Zr 4+ , Ti 4+ , Sn 4+ , V 4+ , Mo 4+ , Mo 5+ , Ru 4+ , Nb 5+ , Si 4+ , Sb 5+ , Nb 5+ , Mo 6+ , Te 6+ one or more of

[0080] Step 320, adding ethanol or water to the precursor and stirring evenly to form a slurry;

[0081] Step 330, spray-drying the slurry to ob...

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 embodiment of the invention relates to a hybrid-phase structure layered oxide material and preparation method and application thereof. The chemical formula of the hybrid-phase structure layered oxide material is Na<x>NiFe<j>Mn<k>M<y>O<2+Beta>, wherein M is an element for doping and substituting a transition metal site, x, y, i, j, k and Beta are respectively mole percents occupied by corresponding elements, (y+i+j+k) is equal to 1, (x+my+2i+3j+4k)=2(2+Beta), x is more than or equal to 0.6 but less than or equal to 0.9, i is more than 0 but less than or equal to 0.3, j is more than 0 butless than or equal to 0.5, k is more than 0 but less than or equal to 0.5, Beta is more than or equal to -0.02 but less than or equal to 0.02, m is valence of M, the structure of a hybrid-phase layered oxide is a hybrid phase of P2 and O3, the space groups are respectively P63 / mmc and R-3m, in oxygen distribution of the hybrid phase, a part of oxygen forms P-type distribution, a part of oxygen forms O-type distribution, and the two structures are compatible in a staggered way in atomic scale.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a layered oxide material with mixed phase structure and its preparation method and application. Background technique [0002] With the development of society, the consumption of fossil energy is increasing and it is close to exhaustion. Large-scale utilization of renewable clean energy such as solar and wind energy is urgent. However, due to the intermittent nature of this kind of energy, it is difficult to connect to the grid, so electrochemical energy storage is particularly important. Lithium-ion batteries have been commercialized with great success due to their high energy density and power density. However, because lithium resources are limited and the extraction cost is high, the cost of lithium-ion batteries increases, which cannot meet the low-cost requirements of large-scale applications; and the element sodium and lithium in the same main group have very similar phy...

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): H01M4/36H01M4/48H01M4/50H01M4/52H01M10/054
CPCH01M4/366H01M4/483H01M4/502H01M4/523H01M10/054Y02E60/10
Inventor 戚兴国刘丽露高飞杨凯胡勇胜陈立泉
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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