What pollution will the production and recycling of lithium batteries cause to the environment?

In fact, the pollution depends on how you look at it. Here may be emphasized the difference with the other battery. It mainly refers to lithium ion batteries, because there is less lithium battery production enterprises. The lithium battery in the process of the production line process, will it cause (gas, water and soil) pollution? At the present stage of lithium battery production process, lithium batteries (Li - ion) would be no toxic heavy metals pollution.

First, from the battery itself first

Lithium battery pollution to the environment

, of course, this concept is relative, and lead acid, nickel chrome battery, its pollution is small, and no heavy metal pollution. But for the environment, or positively harmful (chemical what things not poison?).

Electrode materials and electrolyte and solvent pollution:

Need again, these compared with the traditional battery, pollution is very low.

Second, besides the battery production process may produce pollution:

Pole piece made process: in the process of this a few links, with major domestic lithium iron phosphate system, and even the ternary system, there is no more pollution, may of course ternary system and cobalt acid lithium or have a certain amount of pollution, such as cobalt, manganese, NieDou heavy metals, but also is relatively more environmentally friendly. Among them, the most eco-friendly lithium iron phosphate.

Rest, in addition to according to the above material pollution, note liquid solvent is primarily ring/chain carbonate or carboxylic acid ester. Solute mainly six lithium fluoride phosphate, lithium salt additives mainly film-forming additives, flame retardant additives, conductive additives, additives to improve low temperature discharge. The whole process pollution are also good, chemicals, of course, do not pay attention to its control, there is certainly a pollution to the environment. As for the final package and into, that have less pollution.

Three, talk about recycling part

For cobalt acid lithium and ternary system, and of course there are recycling necessary, after all, which contain heavy metals. Lithium iron phosphate, however, in addition to basic harmless internal electrolyte and so on, compared with other battery don't have any lead, mercury, cadmium and other poisonous and harmful metallic elements in the material, so the pollution is relatively small.

However, waste lithium ion battery of substances into the environment and can cause pollution of heavy metal nickel and cobalt (including arsenic), fluorine pollution, organic pollution, dust and acid and alkali pollution. Waste lithium ion battery electrolyte and their transformation products, such as LiPF6 LiAsF6, LiCF3S03, HF, P201, such as solvent and its decomposition and hydrolysis product, such as DME, methanol, formic acid, etc., are toxic and harmful substances, still need to send waste lithium batteries to qualified local unified processing, do not arbitrarily discarded.

Four, see a production of lithium battery workshop staff said:

1, the beginning of mashing workshop, put the anode material in a stir, developed the technology, high-speed, low-speed, what stage play for how long. Beating the workshop can be? A factory have health this year, half a month after the floor sample can't be black, inside the workshop is never smell peculiar smell. But not the most smelly, high ticket in the answer we use lithium iron phosphate is few, unless when the order was received customer's requirements, after all expensive. Most use manganese, but most of the time is mixed with manganese and cobalt, three yuan (they are written on the package the nickel cobalt manganese) in years ago a lot, see order size batteries, about the charging like treasure.

Said these powder? School of arts living, why do I also say it you will be presented with the following those who feel, and why there are all kinds of taste.

PVDF, smells sour, it looks like flour, but by hand after they no flour so slippery, will feel hand tightened in a minute.

The positive powder, I am to have no smell before not in pulper out what flavor, after the baked in the oven is not too heavy.

Various graphite anode materials, it is, that's not taste, but is too dirty. Pencil that lead, play the hand pitch-black shine more, is that, with black powder wash very clean. We anode materials supplier delivery of car, car slippery. Box push will slide to the car bottom.

NMP, should be as the main solvent of batteries pulp, waste liquid tank in our factory there, good bad, there is a recycling waste liquid of the pipe burst and the kind of rubber hose, so temporary change a thin and broke a few days. Now is hard and thick, PVC pipe? Pollution of this kind of thing should be the biggest of all.

Called carbon black conductive powder, suppliers, is kraft paper bags with, very fine particles, the black is pure black and pure black, very dark. Only the black. Write the Corban are there on the bag?(estimates are spelt wrong..)

No..

2, coating workshop clean a lot, because after beating directly into the pot, only use a tube to coating machine, at that time of the slurry from the same black dust into a milk shake, it seems to be more devotion, almost no the particles.

3, dry before coating to the rolling workshop, is a line, all the way from pulp along the conveyor belt in the past to do the reservation, winding directly. In this place. About 10 meters? I acutely, and it is for life. Pungent odor, but not the kind of sharp, pungent, eyes also will be a little uncomfortable. Keep walking among them, the workshop, licking his lips, um, is bitter (can mutate into battery man?)Oh, by the way, here coating worker, unavoidably will contact in pulp, then. Punch out when the machine will be hard, fingerprint identification press the along while all have no reaction, I before in warehouse, because want to carry some powder, discharge of what, also has a clock now. Then the teacher to work brought the fingers wrapped up..

3, go on, then the roller, the article points the workshop, there is a lot better, machines, or floor, and the air conditioning air supply outlet, and, of course, is black. To taste a lot less.

4, producer winding workshop, not clean, machine big voice, smell, don't know why is a slightly sweet taste, I dare not say good smell here, but in front of the workshop, here is really good smell) workbench is very dirty, though, is to roll pressure have a pole piece, but gently touch will hand some glue.

5, top kill workshop, here with aluminum film, taste...Is some high temperature combustion aluminum-plastic film produce similar heating plastic and invisible flame. Clean, really, than in previous process more clean.

6, what is the vacuum, need time to complete, also did not need employees, just to some check and then passed on to the next working procedure.

7, this workshop? Too stimulating!!I said is the taste, and the workshop with something comes into contact with the skin after feeling, is exciting!!!!!!Liquid injection workshop. Acrid smell is the taste, but not a runny nose, some...Smell that let people feeling more clearly ~ operators are separated, on TV and movies: a box, people outside, wear gloves when arm entered, gloves are attached with box. I have time to help the factory to recycle discarded batteries, silly force, the force by hand to pick and then nail root part of the hand palm, pain for several days, slightly broken skin, corrosion of the bai. This should be very pollution. Oh by the way, as the workshop is clean, the floor can see the original color.

I said, the next step is where the did the modification in shape, there are also some hold a pose for a time process, aging or something.

9, on the processing of waste liquid, NMP recycling waste liquid supply chamber of commerce, with half of the purchase price for recycling. Coating on the key parts of the cleaning and turnover of tank cleaning after beating...Sewer rats won't teach the tortoise also do batteries?

Above these, all is to know when I'm in the warehouse, this is our factory, doesn't mean all the batteries are not? A wupan scale. If you go to BYD, it certainly is not the same. So still hope friends don't have never seen a battery production is full with my answer.

Lithium-ion batteries contain toxic substances is less, we discuss his pollution problems are not very meaningful.Basically see the control of production enterprises, the production of chemical pesticide control of good, also is very good, on the contrary, in the production of lithium battery companies without control, that cannot be ignored.

From the various components on the toxic to the pollution problem of lithium-ion batteries. The composition has the following kinds:

1. The fluid is negative set, generally, the anode aluminum foil, the cathode copper foil, is also likely to be some welding nickel belt connect conductive. These basic no toxicity. Now some discarded li-ion battery unit is by recycling the aluminum and steel shell to earn money. Tags: recyclable, no pollution.

2. The cathode is commonly graphite, a few may be lithium titanate or silicon-based materials, solder electrode also has, of course, but it's too fucking high, no one now used. Graphite is divided into natural graphite and artificial graphite, derived from natural graphite mine, and then do some processing, the exploitation of the natural graphite, pollution is serious, the main is the damage to the respiratory tract, everyone can search; Artificial graphite, it is with the high polymer material such as petroleum coke or asphalt high temperature graphitization, basic no pollution. Have some of the graphite flotation in the lithium battery recycling method, but don't know what happened to the applications now, certainly can be recycled. lithium titanate production process is not clear. Silicon-based anode basic pollution-free. According to the amount of the largest graphite for evaluation. Tags: moderate pollution, recycling situation is unknown.

(3) the positive: the anode with lithium iron phosphate, lithium manganese acid, ternary material lithium cobalt, nickel, cobalt acid lithium aluminate. Lithium iron phosphate, commonly used in automobile or battery energy storage battery, non-toxic. Manganese acid lithium, electric bicycle batteries, non-toxic. Ternary materials: nickel, cobalt, manganese acid lithium wide range of USES, electric bicycles, electronic products, model aircraft, such as cobalt toxic elements. Cobalt acid lithium, digital products, mobile phone, pad, etc., moderate toxicity. Lithium nickel and cobalt aluminate: unknown, speculation and nickel cobalt manganese acid lithium.

4, electrolyte as consisting of organic solvent and lithium salt, organic solvent generally have PC, EC, DEC, DMC, DME, the DMC is micro degrees, the other is non-toxic. Lithium is six lithium fluoride phosphate (use most, there are other lithium salt), is under the influence of water generated by hydrolysis of HF, poisonous.

5, shell has a few broad categories: aluminum, steel shell, plastic shell, aluminum composite membrane, including aluminum, steel shell and non-toxic. Plastic shell and aluminum-plastic film is white pollution.

6, diaphragm, usually in polyolefins microporous membrane, PP, PE, white pollution.

7, binder, now generally have styrene butadiene rubber SBR, poly (vinylidene fluoride, PVdF, there are some acrylic adhesive of a class. These just as white pollution.

Other lithium electricity the material is mainly used in the manufacturing process of NMP (WeiDu), is used as the solvent is negative and evaporate, in the process of manufacturing enterprise needs to control its emissions, and recycling.

I think, at present the pollution problems of lithium electricity there are three main categories:

First, the production process of cleaning is negative pollution pulping equipment and coating equipment, the two is the positive anode materials, including materials such as NMP, glue, some companies control is bad (malicious speculation don't want to control) lead to contain toxic waste water leakage.

One point one, the production process of note electrolyte cleaning supplies, may lead to water into the sewage containing electrolytes.

In general, technology research and development personnel are likely to take water directly into the sewer.

Second, NMP recovery is not complete.

Third to circulate on the market of lithium batteries, indeed, few recycling, pollution that is lithium electricity itself is small, we value degree is not enough; The second is, lithium-ion battery recycling low profits. Lead to lithium battery now don't want to lead acid battery recycling application of the mass, and more like nickel metal hydride batteries, such as only a few of some the slogan "don't discarded batteries".

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