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Positive plate of LiNixCoyMn(1-x-y)O2 acid-free lead-lithium secondary battery and preparation method thereof

A secondary battery, acid-free lead lithium technology, applied in secondary batteries, battery electrodes, electrode carriers/current collectors, etc., can solve problems such as equipment corrosion and environmental pollution, avoid equipment corrosion, and reduce unsafe factors, the effect of increasing the dosage

Inactive Publication Date: 2015-06-17
TIANNENG GRP JIANGSU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As a highly toxic heavy metal, lead can cause serious environmental pollution, and sulfuric acid in the electrolyte can also cause environmental pollution, and it can also cause corrosion of equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 10 g LiNi 1 / 3 co 1 / 3 mn 1 / 3 o 2 (x=1 / 3, y=1 / 3) is the positive active material of the battery, mixed with the binder PTFE and the conductive agent acetylene black at a mass ratio of 8:1:1, ground in an agate mortar for 10 minutes, and added an appropriate amount of Anhydrous ethanol, and paste, make it evenly mixed, and evenly spread it on the current collector aluminum sheet, the amount of paste is 5~10 mg·cm -2 , put the coated positive plate at 100 o Keep it in a vacuum drying oven at C for 24 h, apply a pressure of 10 Mpa, and flatten it to obtain LiNi 1 / 3 co 1 / 3 mn 1 / 3 o 2 Anode plate for acid-free lead lithium secondary battery.

[0018] With the positive plate as the positive electrode, the negative plate of the original lead-acid battery as the negative electrode, and the glass fiber as the separator, 0.5 mol L -1 Neutral Li 2 SO 4 Prepare the battery as the electrolyte, and the discharge specific energy is not less than 80 kWh kg at 1 C rate -1...

Embodiment 2

[0020] Take 10 g LiNi 0.8 co 0.1 mn 0.1 o 2 (x=0.8, y=0.1) is the battery active material, mixed with binder PTFE and conductive agent acetylene black at a mass ratio of 8:1:1, ground in an agate mortar for 10 min, added an appropriate amount of absolute ethanol, and paste, make it evenly mixed, and evenly spread it on the current collector copper sheet, the amount of paste is 5~10 mg·cm -2 , put the coated positive plate at 100 o Keep it in a vacuum oven at C for 24 h, dry it, apply a pressure of 10 Mpa, and flatten it to obtain LiNi 0.8 co 0.1 mn 0.1 o 2 Anode plate for acid-free lead lithium secondary battery.

[0021] With the positive plate as the positive electrode, the negative plate of the original lead-acid battery as the negative electrode, and the glass fiber as the separator, 0.5 mol L -1 Neutral Li 2 SO 4 Prepare the battery as the electrolyte, and the discharge specific energy is not less than 100 kWh kg at 1 C rate -1 , which is 2.5 times the dischar...

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Abstract

The invention discloses a positive plate of an LiNixCoyMn(1-x-y)O2 acid-free lead-lithium secondary battery and a preparation method thereof. The positive plate is prepared through the following steps: adopting an aluminum sheet or a copper sheet as a current collector; adopting LiNixCoyMn(1-x-y)O2 as the active material of the battery positive pole, wherein x is greater than or equal to 0 and less than or equal to 1, y is greater than or equal to 0 and less than or equal to 1, and x plus y is less than or equal to 1; adopting PTFE as a binding agent; adopting acetylene black as a conductive agent to prepare the positive plate equipped with an ordinary lead-acid battery negative plate; adopting glass fiber as a partition, and adopting a neutral Li2SO4 as an electrolyte solution to assemble the acid-free lead-lithium secondary battery. Compared with the lead-acid battery, the use amount of lead is reduced by 75%, the aqueous electrolyte solution is more environment-friendly, safer and cheaper, can more remarkably improve the charge-discharge performance of the battery, and prolongs the service life of the battery.

Description

technical field [0001] The invention relates to the field of secondary batteries, in particular to LiNi x co y mn 1-x-y o 2 A positive plate of an acid-free lead lithium secondary battery and a preparation method thereof. Background technique [0002] Lead-acid batteries have a long history of development. Despite the continuous development of various new battery technologies today, lead-acid batteries still occupy the first place in the secondary battery market due to their excellent cost performance, stable electrochemical performance, mature production technology and high recycling of waste products. . [0003] The lead-acid battery plate is made of a grid-shaped grid after plastering, pressing, and curing. The composition of the positive grid is generally Pb-Ca-Sn-Al alloy. The raw materials of the positive electrode and the paste are generally PbO, H 2 SO 4 , graphite powder, conductive carbon black and other additives. The composition of negative electrode gri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/131H01M4/136H01M4/525H01M4/62H01M4/58H01M4/66H01M10/0563H01M4/1391H01M4/1397
CPCY02E60/10
Inventor 巩春侠方明学陈群张慧
Owner TIANNENG GRP JIANGSU TECH
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