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Copper-based layered oxide material and preparation method and application thereof

An oxide and base-layer technology, applied in chemical instruments and methods, nickel compounds, manganese compounds, etc., to achieve the effect of being suitable for large-scale production and market application, with a wide range of parameters and reducing restrictions

Pending Publication Date: 2022-04-19
GUANGZHOU GREAT POWER ENERGY & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few related studies on the positive electrode of sodium-ion batteries.

Method used

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  • Copper-based layered oxide material and preparation method and application thereof
  • Copper-based layered oxide material and preparation method and application thereof
  • Copper-based layered oxide material and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Copper-based layered oxide material and preparation method thereof

[0035] The molecular formula of the copper-based layered oxide material is Na 1.03 Cu 0.10 Ni 0.22 Fe 0.32 mn 0.35 o 2 .

[0036] The preparation method of the copper-based layered oxide material comprises the following steps:

[0037] S01, take sodium carbonate, copper oxide, nickel hydroxide, iron oxide and trimanganese tetraoxide, add 1.5 times (v / w) of NMP, and mix;

[0038] S02, ball milling; 1500rpm ball milling for 24h, wherein the diameter of the balls is 5mm, and the mass ratio of balls to raw materials is 3:1;

[0039] S03, dried at 200°C for 1h, heated to 1100°C at a rate of 220°C / h, calcined for 16h, and ball milled at 1500rpm for 16h, wherein the diameter of the balls was 5mm, and the mass ratio of balls to raw materials was 3:1.

[0040] Among the raw materials sodium carbonate, copper oxide, nickel hydroxide, iron oxide and trimanganese tetroxide, the total metal impurity content...

Embodiment 2

[0042] Copper-based layered oxide material and preparation method thereof

[0043] The molecular formula of the copper-based layered oxide material is Na 1.03 Cu 0.10 Ni 0.22 Fe 0.32 mn 0.35 o 2 .

[0044] The preparation method of the copper-based layered oxide material comprises the following steps:

[0045] S01, take sodium carbonate, copper oxide, nickel hydroxide, iron oxide and trimanganese tetraoxide, add 1 times (v / w) NMP, and mix;

[0046] S02, ball milling; 1000rpm ball milling for 20h, wherein the diameter of the balls is 3mm, and the mass ratio of balls to raw materials is 1:1;

[0047] S03, dried at 180°C for 0.5h, heated up to 1000°C at a rate of 150°C / h, calcined for 12h, and ball milled at 1000rpm for 12h, wherein the diameter of the balls was 3mm, and the mass ratio of balls to raw materials was 1:1.

[0048] Among the raw materials sodium carbonate, copper oxide, nickel hydroxide, iron oxide and trimanganese tetroxide, the total metal impurity content i...

Embodiment 3

[0050] Copper-based layered oxide material and preparation method thereof

[0051] The molecular formula of the copper-based layered oxide material is Na 1.03 Cu 0.10 Ni 0.22 Fe 0.32 mn 0.35 o 2 .

[0052] The preparation method of the copper-based layered oxide material comprises the following steps:

[0053] S01, take sodium carbonate, copper oxide, nickel hydroxide, iron oxide and trimanganese tetraoxide, add 2 times (v / w) NMP, and mix;

[0054] S02, ball milling; 2000rpm ball milling for 30h, wherein the diameter of the balls is 5mm, and the mass ratio of balls to raw materials is 5:1;

[0055] S03, dried at 220°C for 2h, heated to 1200°C at a rate of 250°C / h, calcined for 18h, and ball milled at 2000rpm for 24h, wherein the diameter of the balls was 5mm, and the mass ratio of balls to raw materials was 5:1.

[0056] Among the raw materials sodium carbonate, copper oxide, nickel hydroxide, iron oxide and trimanganese tetroxide, the total metal impurity content is 1...

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Abstract

The invention discloses a copper-based layered oxide material, the molecular formula of which is Na1 + xCuyMhMnkO1 + i, M is one or more of transition metal elements and rare earth metal elements, 0.01 < = x < = 0.05, 0.05 < = y < = 0.15, 0.22 < = h < = 0.74, 0.3 < = k < = 0.4, and 0.90 < = i < = 1.30. In the preparation process of the copper-based layered oxide material with the specific molecular formula, the requirements for the total metal impurity content, the chloride ion content and the sulfate radical content in the raw materials are low, the stability is high, the requirements for preparation step conditions are wide, and the copper-based layered oxide material is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of sodium ion batteries, and in particular relates to a copper-based layered oxide material and a preparation method and application thereof. Background technique [0002] Electrochemical energy storage materials include lithium-ion batteries, sodium-ion batteries, lithium-sulfur batteries, and supercapacitors. Current lithium-ion batteries are limited by lithium resources. Global lithium resource reserves are limited, and 70% of lithium resources are distributed in South America. At present, China's lithium import volume ranks first in the world. Compared with lithium, sodium element is abundant and widely distributed on the earth. Cathode material is one of the key factors restricting the performance of sodium-ion batteries. At present, the research on cathode materials for lithium-ion batteries mainly focuses on improving the specific discharge capacity, rate performance and cycle performance of the m...

Claims

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Application Information

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IPC IPC(8): C01G53/00C01G49/00C01G45/12H01M10/054H01M4/525H01M4/505H01M4/485
CPCC01G53/44C01G53/006C01G49/009C01G45/1221H01M10/054H01M4/525H01M4/505H01M4/485H01M2004/028Y02E60/10
Inventor 胡铭昌谭玉明陈锦军陈永坤尹江英薛建军
Owner GUANGZHOU GREAT POWER ENERGY & TECH CO LTD