Supercharge Your Innovation With Domain-Expert AI Agents!

Layered O3-phase nickel oxide-contained positive electrode material and preparation method and application thereof

A technology of nickel oxide and positive electrode materials, applied in the field of materials, can solve problems such as instability, and achieve the effects of low cost, suitable voltage range, and high capacity

Active Publication Date: 2015-07-22
INST OF PHYSICS - CHINESE ACAD OF SCI
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And another manganese oxide NaMnO 2 Although the capacity is relatively high, it is extremely unstable in the air

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
  • Layered O3-phase nickel oxide-contained positive electrode material and preparation method and application thereof
  • Layered O3-phase nickel oxide-contained positive electrode material and preparation method and application thereof
  • Layered O3-phase nickel oxide-contained positive electrode material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 of the present invention provides a layered O3 phase nickel-containing oxide cathode material, the chemical formula of which is: Na x A a Ni b Ti c O 2-δ ;

[0039] Wherein, Ni and Ti are transition metal elements, A is an element for doping and replacing the transition metal sites; the A is Li + , Mg 2+ , B 3+ , Cu 2+ , Zn 2+ , Co 3+ , Al 3+ , V 3+ , Fe 3+ , Mn 3+ , Mn 4+ One or more of; the valence state of A is m, and the relationship between x, a, b, c, δ and m satisfies x+ma+2b+4c=2(2-δ), And satisfy a+b+c=1; among them, 0.75 <x <1, 0 <a <0.6, 0 <b <0.5, 0 <c <0.6, -0.05 <δ <0.05.

[0040] In Na x A a Ni b Ti c O 2-δ In the structure, Ni, Mn, and A form an octahedral structure with the six nearest neighboring oxygen atoms, and a plurality of the octahedral structures are arranged on the same side to form a transition metal layer; the six oxygen atoms in the two transition metal layers Forms octahedral structure, alkali metal ion Na + It is located between ever...

Embodiment 2

[0046] This embodiment provides a method for preparing a layered O3 phase nickel-containing oxide cathode material, specifically a solid phase method, such as Figure 4 Shown, including:

[0047] Step 401: Mix the required stoichiometric amount of sodium from 102wt% to 105wt% of sodium-containing carbonate and the required stoichiometric amount of doped metal oxide and A oxide according to the stoichiometric ratio of the positive electrode active material, and grind uniformly The precursor powder is obtained;

[0048] Specifically, the A is Li + , Mg 2+ , B 3+ , Cu 2+ , Zn 2+ , Co 3+ , Al 3+ , V 3+ , Fe 3+ , Mn 3+ , Mn 4+ One or more of.

[0049] Step 402: Place the obtained precursor powder in a crucible, heat-treat it in an air atmosphere at 900°C to 1000°C for 5 to 24 hours, and grind to obtain the layered oxide material.

[0050] The preparation method provided in this embodiment can be used to prepare the layered O3 phase nickel-containing oxide cathode material described in the ...

Embodiment 3

[0052] This embodiment provides a method for preparing a layered O3 phase nickel-containing oxide cathode material, specifically a sol-gel method, such as Figure 5 Shown, including:

[0053] Step 501: Dissolve the required stoichiometric amount of sodium acetate of 102% to 105% by weight of sodium ion and the required stoichiometric amount of nickel nitrate (such as nickel nitrate), tetrabutyl titanate and A nitrate. In absolute ethanol or deionized water, and add citric acid to form a precursor gel;

[0054] Specifically, the A is Li + , Mg 2+ , B 3+ , Cu 2+ , Zn 2+ , Co 3+ , Al 3+ , V 3+ , Fe 3+ , Mn 3+ , Mn 4+ One or more of.

[0055] Step 502, placing the precursor gel in a crucible, and pretreating for 2 to 6 hours in an air atmosphere at 250°C to 500°C to obtain a pretreated powder;

[0056] Step 503: Heat the pretreated powder at 800°C to 1000°C for 5 to 20 hours, and grind to obtain the layered oxide material.

[0057] The preparation method provided in this embodiment can be ...

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
Capacitanceaaaaaaaaaa
Capacitanceaaaaaaaaaa
Coulombic efficiencyaaaaaaaaaa
Login to View More

Abstract

The invention discloses a layered O3-phase nickel oxide-contained positive electrode material, and a preparation method and an application of the material. The material is represented as a chemical general formula of Na<x>ANiTi<c>O<2-delta>. Ni, Mn and A together with six nearest oxygen atoms form an octahedral structure and a transition metal layer through edge-shared arrangement; six oxygen atoms in two transition metal layers form an octahedral structure; an alkali metal ion of Na+ is located between every two transition metal layers and occupies a position of the octahedral structure; A is one or more ions selected from Li+, Mg2+, B3+, Cu2+, Zn2+, Co3+, Al3+, V3+, Fe3+, Mn3+, and Mn4+; and the relationship among x, a, b, c, and delta satisfies x+ma+2b+4c=2(2-delta), and a+b+c=1, wherein x is more than 0.75 and less than 1; a is more than 0 and less than 0.6; b is more than 0 and less than 0.5; c is more than 0 and less than 0.6; and delta is more than -0.05 and less than 0.05.

Description

Technical field [0001] The present invention relates to the technical field of materials, in particular to a layered O3 phase nickel-containing oxide cathode material and a preparation method and application thereof. Background technique [0002] At present, renewable clean energy sources such as solar energy and wind energy have been used in large quantities, but if this kind of electrical energy is directly input to the grid, it will have a great impact on the grid. Therefore, energy conversion and storage have become one of the key issues. The ensuing question is how to modulate and store this time-varying electrical energy. Electrochemical energy storage can efficiently convert electrical energy into chemical energy for storage, and then convert it into electrical energy for stable output. Therefore, the development of low-cost, safe, high-capacity, good rate performance, and suitable voltage range of secondary batteries has caused extensive research. Lithium-ion batteries...

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): H01M4/525H01M4/505H01M4/485H01M4/131H01M10/054
CPCH01M4/131H01M4/1391H01M4/505H01M4/525H01M10/054Y02E60/10
Inventor 胡勇胜王跃生徐淑银陈立泉黄学杰
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com