JPS58184273A - Lead-acid battery - Google Patents

Abstract

PURPOSE:To provide lead-acid battery having good high rate discharge performance and long life by adding ion exchange resin having 0.1-1mum particle size to an electrolyte. CONSTITUTION:When ion exchange resin having 0.1-1mum particle size is contained in an electrolyte, polarization during discharge is prevented and life of a battery is increased. A battery using a mixture equally containing strongly basic anion exchange resin (stylene family) and stongly acidic cation exchange resin having 0.1-1mum particle size increased 20hR capacity cycle life by 15- 20% and high rate discharge capacity at low temperature by 30%. Use of either one of anion exchange resin and cation exchange resin also gives same effect.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in lead-acid batteries;
The object of the present invention is to obtain a battery that has a high rate of discharge performance and an excellent long life performance.

When power is saved in a lead-acid battery, the active material fEI dioxide (PbOz) is reduced on the positive plate and becomes divalent lead ions (PbOz).
Pb is combined with sulfate ions (804 ions) in the electrolyte and deposits on the surface of the electrode plate as die.
It becomes an ion and combines with the ions in the electrolyte to form sulfur and precipitate on the surface of the dragon plate. When the discharge field is large, [
In both cases of the E negative active plate, MU and ions in the electrolyte near the surface of the active material rapidly decrease and diffusion is delayed, and -10,000Pb ions rapidly increase, resulting in supersaturation.

As a result, the concentration increase increases, the battery voltage decreases, and it becomes impossible to discharge. When high-concentration sulfuric acid is electrolytically spread over H+, a large number of 804 ions will be present, the concentration property will decrease, and the high rate of released valleys will increase. promotes this and reduces life performance.

The present invention aims to improve these shortcomings, and its gist is to include an ion exchange resin with a particle size in the range of 0.1 to 1 μm in an electrolytic solution to contribute to battery reactions and prevent division of action during discharge. It is something to do. The cation exchange resin (fun) exchanges the Fb ions generated during discharge with C ions to prevent the separation, and the anion exchange resin (type 804) has a rate of 8 to 1 in the vicinity of the beat rate.

It is thought that when ions are exhausted, 804 ions are released to prevent positive and negative polarization.

From the results of the experiments mentioned below, it has become clear that ion exchange resins with a particle size in the range of 0.1-1 μm are particularly good.

In this practical example, a strongly basic anion exchange resin (1 styrene and a strongly acidic cation exchange resin were mixed in equal parts (-r) was used, and the following 8 types of test samples with different particle sizes were selected. A: Particle size 0.1-1 μm mixed (emulsion type, solid content 20%) B: Particle size 1-40 μm mixed (solid content 50%) C: Particle size 0.1-40 μm
A mixture of In (half and half mixture of Mu and B, solid content 50%).

Add this sample to 1g of electrolyte to make the solid content 30g.
Add so that the sulfuric acid concentration is 5 mol/e<ratio@1.
#Ii was made so that 27).

Next, put this test electrolyte into a 50mm battery assembled in the usual way, and charge it in the usual way.
Tested according to the S standard. For comparison, 5 mol/l sulfuric acid without added ion exchange resin was tested.

The moonlight performance J5 and life performance were as shown in Table 1.

As shown in Table 1, the batteries (A, B, O) containing ion-exchange resin and using the FC battery (A, B, O) have better initial cut and life performance compared to the TC battery (ρ) using the conventional electrolyte. Excellent performance. In particular, using the product of the present invention containing an ion-exchange resin with a particle size in the range of 0.1 to 1 μm...[2T battery (5)]
) was 2QhR@ quantity, and in the life cycle, it was 15 to 20% towards E, whereas in low temperature high rate discharge performance, it was over 80% towards t. Because the effect on low-temperature, high-rate discharge performance was large, the 804 ion index h* near the melting plate was reduced to I¥4.
If the diffusion of SO in the bulk bulk has caught up, it is said that this effect is significantly exhibited.In addition, the ion-exchange resin in the electrolyte is circulating around the positive and negative sides. Although it is not clear whether they act in the proportions of σ and C, it seems likely that the same effect can be obtained even if each of the anion exchange resin and cation exchange resin is used alone.It is also effective in terms of life performance This January 4, it is thought that the performance of cutting is maintained because of the acid resistance of the linseed oil (styrene type).

In this example, the amount of ion exchange resin added was 301 as solid content per 1 e of electrolyte, and the results of the experiment were as follows.

1O-1110f is 11I.

According to the present invention, as described below, the initial performance.

A co-lead battery with excellent luxury IfI performance was obtained, and the commercial 1d of the present invention! i 4 t, is large.

Claims (1)

[Claims] 1. A lead-acid battery characterized in that an ion exchange resin having a particle size in the range of 0.1 to 1 μm is added to an electrolytic solution.