Battery anode and primary cell as well as preparation method thereof

A positive electrode and battery technology, which is applied in the field of battery positive electrodes and primary batteries and their preparation, can solve the problems of low energy density and short life of primary batteries, and achieve the effects of long energy density, reduced production cost, and low price

Inactive Publication Date: 2009-01-28
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of low energy density and short life of the existing primary battery, and provide a positive electrode with higher energy density and longer service life and a primary battery containing the positive electrode

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The preparation method of the positive electrode of a primary battery provided by the present invention includes loading the positive electrode material on the current collector, the positive electrode material includes a positive electrode active material, a conductive agent and a binder, wherein the positive electrode active material is ferric oxide and / or Fe3O4.

[0017] The method of loading the positive electrode material on the current collector is well known to those skilled in the art. For example, the method of loading the positive electrode material on the current collector can be coating and / or filling the slurry containing the positive electrode material and solvent on the current collector, followed by drying and calendering, or it can be that the slurry containing the positive electrode The slurry of the material and the solvent is dried and pulverized to obtain a positive electrode material powder, and then the positive electrode material powder is roll...

Embodiment 1

[0026] This example illustrates the positive electrode provided by the present invention and the primary battery containing the positive electrode and their preparation methods.

[0027] (1) Preparation of positive electrode

[0028] 80 parts by weight of positive electrode active ingredient ferric oxide (SIGMA-ALDRICH), 4 parts by weight of binder polytetrafluoroethylene (number average molecular weight is 360,000), 4 parts by weight of conductive agent acetylene black are added to 52 grams of N-formazan In base pyrrolidone (NMP), then stir and mix to obtain positive electrode slurry.

[0029] The positive electrode slurry is dried at 150°C, and the dried material is ground into powder, and then the dried material powder is rolled into a sheet with a diameter of 13 mm with a tableting mold under a pressure of 2-4 MPa. A nickel mesh of 1.0 mm is used to make the positive electrode, and the amount of the positive electrode material is such that the content of the positive elec...

Embodiment 2

[0035] This example illustrates the positive electrode provided by the present invention and the primary battery containing the positive electrode and their preparation methods.

[0036] Prepare the battery according to the method of Example 1, the difference is that the positive electrode active material is 80 parts by weight of ferric oxide (Tianjin Kemiou Chemical Reagent Development Center), and the consumption of the positive electrode material is such that the nickel mesh per unit area, The content of the positive electrode material is 6 grams, which contains 0.1 gram of positive electrode active ingredient ferric oxide. An RC2016 lithium primary button battery A2 was prepared.

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PUM

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Abstract

The invention provides a positive electrode for a primary cell, comprising a collector body and a positive material loaded on the collector body. The positive material comprises a positive active matter, a conductive agent and a bonding agent, wherein the positive active matter is ferric oxide and / or ferroferric oxide. The primary cell prepared by the positive electrode has the advantages of higher mass specific capacity and energy density and longer service life.

Description

technical field [0001] The present invention relates to a positive pole of a battery, a battery using the positive pole and a preparation method thereof, more particularly to a positive pole of a battery, a primary battery using the positive pole and a preparation method thereof. Background technique [0002] With the rapid development of the electronics industry, batteries with small size, light weight, long life and high energy density are required as energy sources for small portable electronic products. Different electronic product applications have different requirements for DC power supplies. The positive electrode of the commonly used primary battery now uses manganese dioxide as the positive electrode active material, and the negative electrode is a lithium sheet. The disadvantages of the existing primary batteries using manganese dioxide as the positive electrode active material are low energy density and short service life. [0003] CN1643715 discloses a positive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/06H01M4/48H01M4/58H01M4/62H01M4/08H01M6/14H01M4/52
Inventor 孙美红荣强何珍朱登
Owner BYD CO LTD
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