If 10 years ago, we talk about the mobile power, can whenever and wherever possible for your mobile phone charging, it may be considered idiotic, because the mobile phone batteries hold 3, 4 days or a week, there is no problem. Now it's different, smart machines everywhere, big screen! High performance! The power consumption of mobile phones has increased greatly, so the mobile power market has its strong market, but with more and more mobile power supply! The disposal of the abandoned mobile power has become a big problem! Today we're going to talk about the little thing about wasted mobile power.
Before talking about how to deal with discarded mobile batteries, I'd like to talk about last week's news about batteries.
The news is about a new type of lithium battery developed by the University of California at Irvine. The study, led by Mya Le Thai, a school doctoral student, was coated with manganese dioxide on a nanowire and wrapped in a gel similar to that of organic glass. Nanowires are thousands of times thinner than hair, and have excellent electrical conductivity, as well as storage and transmission of large amounts of electrons. But because of its too fragile, repeated use, easy to fragmentation. But because of its too fragile, repeated use, easy to fragmentation. After the treatment of Mya, Le and Thai, nanowires become more reliable and can be expected to be put into practical use. (actually, do you understand the principle of Xiao Bian's theory?)
In simple terms, if the battery will really apply to our actual mobile phone now, it can be said that this battery is the legendary never aging battery, because at present, this experiment has been repeated 200 thousand times the battery charge and discharge test, also did not show signs of power down or broken.
But the news came back to the news, and there were a lot of news about the new battery material before, but there's no real breakthrough in the widely used battery yet. For now, the batteries we use will shrink as time goes on, and life will continue to decrease. That's common sense that we know.
The next step is to talk about our current mainstream mobile power battery materials, in the present situation, the mobile power battery core material is mainly divided into three kinds, respectively: cobalt acid lithium batteries, nickel cobalt manganese iron phosphate batteries, lithium batteries. The three kinds of material core can be collectively referred to as lithium batteries, the following on the first small science, what is the core of these ghosts?!
Cobalt acid lithium batteries: a larger version of commonly known as No. 5 batteries, 18650 batteries
The characteristics of cobalt acid lithium batteries in the battery stable structure, high specific capacity, comprehensive performance is outstanding, standard voltage is 3.7V. But its security is poor, the number of cycles of the core is low, only about 300 times. Widely used in notebook computer battery (the lighter will be used, polymer batteries) have some mobile power using cobalt acid lithium batteries, such as: a mobile power meter is by using this material (10000mAh for example).
18650 electric core
Nickel cobalt manganese core: current mainstream polymer core
The nickel cobalt manganese core is what we often call the polymer core, and its polymer lithium ion is substituted for the colloidal polymer. This polymer is “ &rdquo or “ solid state; colloidal ”, its life has improved over 18650 batteries, reached more than 500 times, higher safety factor, but also the most a kind of battery material widely, now the mainstream of the new mobile power supply manufacturers will adopt the electric core material. But the battery can pollute the environment as well. (for example, a mobile power source of a certain group)
Polymer core
Iron phosphate lithium iron core: “ ” electric core material of the recently emerging
The iron phosphate lithium batteries battery is a new battery in recent years, can be said to be the best for safety performance of products. The charging cycle number has reached about 2000 times, and high safety, and no pollution, but the batteries for mobile power supply, there are two fatal flaws, it is big volume, but the price is high, the two factors for the time being, the batteries used in the range of few battery mobile power now, this battery is mainly used in electric vehicles, small storage tools batteries, lawn lamp, electric tools and other larger.
Iron phosphate lithium batteries
In order to facilitate the net friend's watch, the following table directly put these three kinds of electric core make a contrast, let the net friend at a glance their advantages and disadvantages.
Comparison of three common electric cores for mobile power supply
Cobalt acid lithium batteries
Nickel cobalt manganese core
Iron phosphate lithium batteries
Voltage platform (V)
Three point six
Three point five
Three point two
Gram capacity (mAh/g)
135~140
100~115
130~140
Specific surface area (m^2/g)
0.4~0.6
0.2~0.4
12~20
Vibration density (g/cm^3)
2.8~3.0
2.0~2.3
1.0~1.4
Battery cycle times
> =300 times
> =500 times
> =2000 times
Charging speed
slow
Fast
Very fast
Self discharge
higher
Low
low
memory effect
nothing
nothing
nothing
transition metal
poor
poor
Very rich
Manufacturing cost
Low
high
Very high
environmental protection
Cobaltiferous
Nickel and cobalt
Non-toxic
Security
difference
good
excellent
Now applicable areas
Small cell
Small cell / small energy storage
Ultra large capacity power
Can be seen from the chart, from the perspective of environmental protection, most of our current use of lithium batteries are of great pollution, although the lithium iron phosphate battery has no pollution, but for mobile power, this material is not yet universal, so a waste of mobile power, processing method of small I just talk about both cobalt acid lithium batteries and nickel cobalt manganese batteries.
For the disposal of waste mobile power, we should first know the main components of the inner electrical core. If the electrical core of the mobile power supply is not handled properly, the pollution to the environment will be enormous. Cobalt acid lithium batteries (popularly known as the 18650 batteries), its main composition is generally composed of positive and negative materials. Lithium ion batteries are mainly made of layered lithium cobalt oxide as cathode material. Nickel cobalt manganese core (commonly known as polymer core), it is made of nickel salt, cobalt salt, manganese salt as raw material.
To give a small example, a small button battery, is below these, you don't see it so small, it is enough to 600 cubic meters of water pollution, one battery can make a square meters of land lost use value, so as can be imagined, scrap mobile power electricity core if handled improperly, the harm is great.
Mobile power mainly has three parts, respectively, shell, circuit board and batteries, while the shell is usually plastic or metal will be recycled resources, useful resources can be recycled electric circuit is the core, is the most important, if at the end of recovery and effective treatment, will seriously pollute the environment.
Where are the used mobile batteries?
In addition to some unexpected situations, such as explosion, dissolved what, mobile power will have their last life, when the mobile power cannot provide strong electricity when charging for other products, the mobile power has lost its own role, but many users will not know how to dispose of the waste of the mobile power, simply throw into the trash, I feel it.
Do you know the logo? There will be some on the mobile power
In China, recycling waste on mobile power is not what formal channels can go away in the current situation, the only feeling now for us a more feasible way is to recycle old mobile power box into the trash or directly to waste recycling processing. However, the number of waste collection stations to recover the charge requires a certain amount of recycling can be given, because the recycle bin is also profitable ah! Too little, no value at all.
There is also a number of more famous businesses will introduce some short-term “ the old to new ” activities to make the user's discarded mobile power to add money for new (this activity is usually 3This will be the most effective and most beneficial approach for us, but not always,.15. Do you think I'll sell ads for the next little series? Think too much, I refuse!)
Before, a brand launched the "old to new" activity is a good way to deal with waste mobile power supply
In fact, the electric core recovery of mobile power is extremely important, as mentioned above, the pollution of the environment the chemicals are harmful, but its internal resources still has a huge space for recycling. But why wouldn't anyone be willing to recycle the waste power cores? In fact, ZF is because there is no corresponding policy in this area, and the scrap dealer think it a waste of time for these things, income is not high, only lead to waste now mobile power difficult situation.
These reasons have led to the end of the mobile power supply, the most direct place in our family: — — garbage can.
Written in the end:
The disposal of waste mobile power is indeed a serious environmental problem now. As a consumable, the charging treasure will also be more and more popular with its increasing popularity. In this regard, I feel that for this aspect of treatment, we should start from three aspects.
One aspect of our consumer itself should have the awareness of environmental protection, garbage properly, the battery waste classification processing, this I think is to the efforts of several generations can change.
On the other hand, it is ZF to have the corresponding recovery policy, given certain subsidies for waste recycling business waste recycling mobile power, encourage scientific research institutions conducive to recycling method of waste batteries.
On the last hand, it is mentioned earlier that through the innovation of battery material, instead of the existing battery core which is harmful to the environment, the pollution of the waste electrical core from the environment will be fundamentally solved.
