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Method for preparing positive plate of lithium-iron button battery

A battery positive electrode and iron buckle technology, applied in the direction of electrode manufacturing, etc., can solve the problems that the battery processing performance needs to be further improved, and achieve the effects of improving the consistency of internal resistance, improving capacity, and improving mixing uniformity

Active Publication Date: 2013-09-04
SHANDONG GOLDENCELL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The lithium-iron button battery is a high-energy and pollution-free primary battery independently developed by Hitech. The lithium-iron button battery has high specific energy, stable voltage, and long storage period. Advantages, but the processing performance of the battery needs to be further improved

Method used

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  • Method for preparing positive plate of lithium-iron button battery

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Embodiment 1

[0019]First, the high-temperature pretreated iron disulfide cathode material was put into a ceramic ball mill for ball milling, the diameter of the ball was 3 cm, the mass ratio of iron disulfide to the ball was 1:5, the rotation speed was 100 r / min, and the ball milling time was 3 h. After passing through a 150-mesh sieve, the sieved iron disulfide and conductive carbon Super-p are added to a ceramic ball mill at a mass ratio of 96:1 for ball milling. The diameter of the ball is 3 cm, and the mass ratio of powder to ball is 1:7. , Speed: 100r / min, ball milling time 1h. Pass through a 150 mesh sieve. Add the mixture of iron disulfide and conductive agent into the mixing bucket of the planetary mixer, add the pre-prepared deionized water boiling at 100°C, and stir rapidly. The mass ratio of deionized water to powder is 1.5:1, and the revolution Speed ​​20±1r / min, rotation 1500±50r / min, stirring time 0.5h, then add PTFE solution (polytetrafluoroethylene) (concentration 60%), th...

Embodiment 2

[0021] First, the high-temperature pretreated iron disulfide cathode material was put into a ceramic ball mill for ball milling, the diameter of the ball was 3 cm, the mass ratio of iron disulfide to the ball was 1:5, the rotation speed was 100 r / min, and the ball milling time was 3 h. After passing through a 150 mesh sieve, the sieved iron disulfide, the conductive agent acetylene black, and the conductive agent conductive graphite KS-6 are added to a ceramic ball mill at a mass ratio of 96:0.5:1 for ball milling. The diameter of the ball is 3 cm. The ball mass ratio is 1:8, the rotational speed: 100r / min, and the ball milling time is 2h. Pass through a 150 mesh sieve. Add the mixture of iron disulfide and conductive agent into the mixing bucket of the planetary mixer, add the pre-prepared deionized water boiling at 100°C, and stir rapidly. The mass ratio of deionized water to powder is 2:1, and the revolution Speed ​​20±1r / min, rotation 1500±50r / min, stirring time 1h, then ...

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Abstract

The invention discloses a method for preparing a positive plate of a lithium-iron button battery. The method is capable of producing a high-energy and pollution-free lithium-iron button battery, and comprises the following steps of: placing an iron disulfide positive pole material which is pre-treated at high temperature into a ceramic ball mill for ball-milling, and sieving through a 150-mesh sieve; adding a sieved mixed material of iron disulfide and a conductive agent into the ceramic ball mill for the ball-milling in a mass ratio of 96:(1-3), and sieving through the 150-mesh sieve; adding the mixed material of the iron disulfide and the conductive agent into a stirring drum of a planetary stirrer, adding pre-prepared deionized water boiling at the temperature of 100 DEG C, adding a polytetrafluoroethylene (PTFE) solution, starting the planetary stirrer, continuously stirring, and separating slurry from the deionized water to form pasty slurry; taking the pasty slurry out from the stirring drum, and laying the pasty slurry in a porcelain dish; placing a positive pole material into the ceramic ball mill, and performing ball-milling through a ceramic milling ball with the diameter of 2 to 5cm; brushing the positive pole material into foamed nickel through a brush; and rolling the positive plate to obtain the positive plate of the lithium-iron button battery.

Description

technical field [0001] The invention relates to a method for preparing a positive electrode sheet, in particular to a method for preparing a positive electrode sheet for a lithium-iron button battery. Background technique [0002] my country is a big country in the manufacture and use of primary button batteries. The annual usage of primary button batteries in my country is nearly tens of billions. At present, the market is mainly alkaline primary batteries, mainly including two series, zinc-manganese batteries and silver-zinc batteries. , These two batteries contain more or less a certain amount of mercury, which is a heavy metal and is highly toxic. Although the country advocates the development of mercury-free alkaline primary batteries, as far as the current technical level is concerned, mercury-free batteries are immature, poor in performance, The cost is high, and some manufacturers can only produce low-mercury batteries. According to the mercury content standard of mer...

Claims

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Application Information

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IPC IPC(8): H01M4/04
CPCY02E60/10
Inventor 张敬捧王勇关成善宗继月
Owner SHANDONG GOLDENCELL ELECTRONICS TECH
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