Ask questions about the hazards of batteries or the hazards of lead, 50

Don't talk about lead discoloration! In fact, the battery is not as scary as you think.

Question 1 and 3 are actually the same, after the battery is assembled and shipped out of the factory, the shell of the battery is no longer exposed to lead and other heavy metal elements. After the battery is assembled, it will be rinsed and wiped several times, and there will be no lead and other heavy metal elements left, so you can rest assured.

But: Maybe some batteries of poor quality or use will have acid leakage and acid bleeding, that is, the electrolyte you are talking about, the electrolyte is actually not toxic, but it will burn cotton products. As far as the phenomenon is concerned, unguarded contact with the electrolyte** may cause a stinging sensation, and cotton clothing will have small holes.

If you have protection, it's no problem.

You only need to remember one thing, a No. 1 battery rots in the ground, which can make 1 square meter of soil permanently lose its use value; One coin cell battery can contaminate 600 tons of water, which is equivalent to the amount of water a person drinks in a lifetime. In the most threatening to the natural environment of several substances, batteries contain mercury, lead, cadmium and other kinds, if the waste battery is mixed with domestic garbage landfill, or discarded, the leaching mercury and heavy metal substances will penetrate into the soil, pollute groundwater, thereby entering fish, crops, damage the living environment of human beings, and indirectly threaten human health.

Lead-acid batteries are safe.

Lead-acid batteries are generally safe, because most of the batteries on the market are now this kind of batteries, because the high-rate discharge performance of this battery is very good, the voltage is basically stable, and there is no need to bother with maintenance, the overall weight can also be, and the most important point is that it is very cheap, and it is the favorite of electric vehicle manufacturers.

Introduction to battery types

1.Lead-acid batteries

Composed of sulfuric acid electrolyte lead plate, the battery has the characteristics of weight, large size and high safety, and has high slag disturbance and utilization value, and is the mainstream battery that occupies 7% of the current market share of two-wheeled electric vehicles.

Lead-acid batteries generally do not catch fire in the case of slow eggplant, because there is a chemical substance of sulfuric acid in this battery, which is basically very stable, unless the operation is very excessive, such as frequent exposure to the sun to charge, at this time, the temperature of the battery charging itself is too high, coupled with the temperature of external factors, the two temperatures collide, and a fire will also occur.

2.Lithium batteries

The battery is composed of lithium material for positive electrode, graphite for negative electrode, organic electrolyte and specially formed polymer film, and has the characteristics of light weight and high density, which is currently the mainstream battery of electric vehicles, and the mainstream battery that occupies part of the market share of high-end electric vehicles in two-wheeled batteries.

3.Graphene batteries

It is based on lead-acid battery and added with special graphene elements, which has the characteristics of higher density and longer life than ordinary batteries, and is an innovative battery mainly promoted by first-line brands such as Yadea and Emma.

When charging, electrical energy is converted into chemical energy, and when discharging, chemical energy is converted into electrical energy. When the battery is discharged, the metal lead is the negative electrode, which undergoes an oxidation reaction and is oxidized to lead sulfate; Lead dioxide is the positive electrode, which undergoes a reduction reaction and is reduced to lead sulfate. When the battery is charged with direct current, lead and lead dioxide are generated at the two poles, respectively.

After the power supply is removed, it returns to its pre-discharge state and forms a chemical cell.

The advantages are, stable and reliable, large capacity, strong ability to withstand impact loads, because of good toughness, easy access to raw materials, and low cost.

The lead-acid battery electrode is mainly made of lead and its oxide, and the electrolyte is a kind of battery with sulfuric acid solution. In the charged state, the main component of the positive electrode is lead dioxide, and the main component of the negative electrode is lead. In the discharge state, the main components of the positive and negative electrodes are lead sulfate.

The electrode reaction formula of lead-acid battery is:

Charging: 2PBSO4+2H2O PBO2+PB+2H2SO4 (electrolytic cell).

Anode: PBSO4 + 2H2O2E === PBO2 + 4H+ +SO42

Cathode: PBSO4 + 2E === PB + SO42

Discharge: PBO2+PB+2H2SO4 2PBSO4+2H2O (galvanic cell).

Negative: PB + SO42 2E === PBSO4

Positive electrode: PBO2 + 4H+ +SO42 +2E === PBSO4 + 2H2O

Since its invention, lead-acid batteries have always had an absolute advantage in chemical power sources. This is because of its low cost, easy availability of raw materials, full reliability in use, suitable for high-current discharge and a wide range of ambient temperatures.

However, lead is toxic, and leaked lead has a great damaging effect on the environment, so the future large-capacity battery will be developed with lithium or iron-ion batteries.

A large amount of discarded in the environment, the acid and alkali electrolyte solution will affect the pH of the soil and water system, making the soil and water system acidic or alkaline, and mercury, cadmium and other heavy metals are absorbed by the organism, through various ways into the human food chain, in the human body to accumulate, teratogenic or mutation, and even lead to death.

The pollution of lead-acid batteries is mainly the pollution of heavy metal lead and electrolyte solution. Lead can cause neurasthenia of the nervous system, numbness of the hands and feet, digestive indigestion, blood poisoning and kidney damage.

Lead-acid battery Lead-acid battery is currently the world's largest production and most widely used battery. Sales account for more than 30% of global battery sales. The annual output of lead-acid batteries in China is nearly 30 million kWh.

Yes, but not very large, there is hydrogen when charging, and the electrolyte also has an effect.

I'm sorry, I clicked on the wrong point just now.

Hello, there are many reasons for this. First of all, the application of lithium-ion batteries, from ordinary mobile phones, tablet batteries, portable batteries, flashlights, MP4, GPS, and electric vehicles, is now back in the popular lithium-ion battery cars, etc., the application of lithium-ion batteries is indeed more extensive. The quality of the battery is the choice of lithium-ion battery, so the lithium-ion battery goes to a peak.

Of course, the advent of lithium-ion batteries has also taken countless digital products to a new level. Lithium-ion batteries are small in size and tend to grow larger, creating small products that sell well and are more convenient for people to travel. Lithium-ion batteries are also accepted by the public because they do not contain toxic substances.

Lithium-ion batteries do not contain toxic substances such as lead, cadmium, and mercury. This quality is known as a green lithium-ion battery. An important reason why people choose lithium-ion batteries is the high safety of lithium-ion batteries.

At the peak of the market, there were few accidents, but there were still some. The cause of the accident is also due to the fact that the masses do not use it properly, and do not continue to use the wrong situation, thus expanding the danger. When using lithium-ion batteries, we should follow the instructions, especially when using lithium-ion batteries in electric vehicles.

There is a battery leasing concept, a lithium-ion battery life standard. Follow the instructions to add security and reduce risk. There is also an important reason for the emergence and acceptance of lithium-ion batteries by the public, that is, the voltage of lithium-ion batteries is very high when lithium-ion batteries are light.

The average voltage of a small-volume lithium-ion battery can reach more than or so. Correlation with the series voltage of the battery and the nickel separator. In addition, those who use lithium-ion batteries in industry can manufacture the voltage and shape of lithium-ion batteries according to the customer's requirements.

In particular, lithium-ion batteries used in the molding industry can also be produced according to their own needs, and lithium-ion batteries can be produced according to customer requirements and molding voltages.

Yes, battery factories are generally concentrated in heavy metal areas, and if you are not careful, you will be exposed to heavy metal environment, which will cause some diseases. In the formal workshop, the protective measures may be in place, if you work, you must strictly abide by the safety rules and bring protective tools. As for the small workers Sakura Factory, it is recommended not to go to the black factory.

As for the salary, it should be good.

Mercury, commonly known as "mercury", is a liquid substance at room temperature, which can prevent the oxidation of the cathode metal zinc in the battery, which improves the storage life of the battery. Therefore, almost all of the batteries used as cathodes in the past used zinc as a preservative have a certain amount of mercury as a preservative. However, mercury and mercury compounds are neurotoxic, and have adverse effects on the endocrine system, immune system, etc., it will cause slurred speech, unsteady gait, paralysis of limbs, and finally lead to general spasms, mental disorders and death.

Cadmium is not an essential trace element in the human body, and there is no cadmium in the body of newborn babies, but gradually accumulates as they age. Cadmium is nephrotoxic and the kidney damage it causes is irreversible. At the same time, kidney injury may also be followed by osteoporosis, osteomalacia and fractures.

Excessive manganese accumulation in the body can cause neurological dysfunction, which is manifested as comprehensive dysfunction in the early stage, and in severe cases, monotonous speech, rigid expression, emotional indifference, and mental symptoms.

Lead mainly acts on the nervous system, hematopoietic system, digestive system, and liver, kidney and other organs, can inhibit the anabolism of hemoglobin, and can also directly act on mature red blood cells, which is very toxic to infants and young children, it will lead to children's physical development retardation, and children with chronic lead in mental retardation.