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Positive electrode material and preparation method thereof, battery containing the positive electrode material

A technology of positive electrode materials and positive active materials, applied in the field of battery positive electrode materials and its preparation, to achieve high capacity effects

Active Publication Date: 2021-05-14
POSITEC POWER TOOLS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] So far, there has been no documented or reported method of grinding positive electrode materials such as lithium manganese oxides using grinding balls of different diameters.

Method used

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  • Positive electrode material and preparation method thereof, battery containing the positive electrode material
  • Positive electrode material and preparation method thereof, battery containing the positive electrode material
  • Positive electrode material and preparation method thereof, battery containing the positive electrode material

Examples

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preparation example Construction

[0049] The present invention also provides a positive electrode material obtained by the preparation method of the present invention. The method for preparing the positive electrode material and the additives used therein are not subject to any limitation, and conventional methods for preparing the positive electrode material and conventional positive electrode additives such as positive electrode conductors and positive electrode binders are applicable to the present invention.

[0050] On the other hand, the present invention also provides a battery comprising a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode contains the positive electrode material of the present invention. The negative electrode and electrolyte used in the battery of the present invention are not particularly limited, and may be negative electrode materials and electrolytes commonly used in the battery field. Batteries may be free of separators. Of course, in or...

Embodiment 1

[0055] In the absence of solvent, using three ZrO spheres with a large diameter of 10 mm, a medium diameter of 5 mm and a small diameter of 3 mm 2 The balls are respectively on the LiMn as the positive electrode active material 2 o 4 Ball milling was carried out, the ball milling time was 4 hours, and the rotational speed of the ball mill was 150 rpm, to obtain positive electrode material A.

Embodiment 2

[0057] Ball milling was carried out according to the steps of Example 1, except that the ball milling time was 6 hours, and positive electrode material B was obtained.

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Abstract

The invention provides a positive electrode material, a preparation method thereof, and a battery containing the positive electrode material. When the positive electrode material prepared by the method of the present invention is used as the positive electrode material in a battery, especially in a rechargeable aqueous hybrid battery (ReHAB), the performance of the battery can be greatly improved.

Description

technical field [0001] The invention relates to a positive electrode material for batteries and a preparation method thereof, in particular to a lithium manganese oxide positive electrode material and a preparation method thereof. Background technique [0002] Cathode materials, especially spinel-type lithium manganese oxides with a three-dimensional tunnel structure for lithium ion migration, have been widely used due to their high operating voltage, low production cost, low toxicity, and excellent voltage distribution. As a potential high-power cathode material for aqueous batteries. In addition to being widely used in lithium-ion batteries, in recent years, lithium manganese oxides have been used in new secondary aqueous Zn / LiMn 2 o 4 The battery system, also known as a rechargeable aqueous hybrid battery (ReHAB). The energy density of ReHAB is about 50-80Wh·kg -1 , is the energy density of commercial lead-acid batteries (about 30-70Wh kg -1 ) twice. [0003] It is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B02C17/20B02C17/10H01M4/505H01M4/525H01M4/58H01M10/36
CPCB02C17/10B02C17/20H01M4/505H01M4/525H01M4/5825H01M10/36H01M2004/021H01M2004/028Y02E60/10
Inventor 支键黄团陈璞
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD