Ternary Lithium Battery
There are many kinds of lithium ion battery just like ternary lithium battery, LiFePO4 battery and Titanium lithium battery and etc. At home and abroad, most of small high-power batteries use ternary cathode materials. If you are fans of Tesla, you may know that high-grade Tesla cars use ternary lithium batteries as their power resources.
Are you a little strange about ternary lithium battery? Don’t worry about it. Today we mainly introduce ternary lithium battery and we will solve your all problems about ternary lithium battery.
So what is ternary lithium battery?
Just like naming rules of LiFePO4 battery, ternary lithium batteries use their cathode materials as their names. Because cathode of ternary lithium battery has three kinds of metal materials–Nickel(Ni), Cobalt(Co), Manganese(Mn), and the content ratio of them can be adjusted according to actual needs. For example, according to the ratio of three metal materials like 1:1:1, 5:2:3 and 8:1:1 and etc, there are different compound material. Thus the materials of compounds are fixed, so we call them collectively as ternary lithium batteries.Maybe you want to ask↓↓↓↓↓↓
Why we use Ni, Co and Mn these three kinds of metal in ternary lithium battery ?
Ni–Nickel is chemically active and difficult to oxidize in air at room temperature. Ni ions improve the volumetric energy density of the material
Co–Cobalt does not react with water at room temperature and is stable in humid air. Cobalt is relatively expensive. Co ions stabilize material laminar structure, reduce impedance value and improve conductivity and cycling performance.
Mn–Manganese is stable and is not easily oxidized or reduced. Mn ions decrease material cost and improve material safety and stability.
What are the specifications of Ternary lithium battery?
|Standard discharge C-rate||0.2c|
|Maximum continuous discharge C-rate||1C|
|Overcharge protection voltage||4.325±0.025V per series|
|Over-discharge protection voltage||2.5±0.05V|
|Working temperature range||– 10 ~ 60 ℃|
|Thermal runaway temperature||250-300℃|
What advantages does it have？
High energy density:
We always use energy density to describe how much electricity can be stored per unit volume. The higher the energy density, the more electricity can be released.
Compared with LiFePO4 battery, the energy of ternary lithium battery is higher. The energy density of LiFePO4 battery is at the range of 90-160Wh/kg, while ternary lithium battery can reach 250Wh/kg and normally range from 170-200Wh/kg.
High voltage platform:
The voltage platform of ternary lithium cell is as high as 3.7V. LiFePO4 cell IS 3.2V and Lithium Titanate cell is only 2.3V. Voltage platform is an important index of battery energy star density, which determines the basic performance and cost of battery. Therefore, the selection of battery materials is of great significance. The higher the voltage platform, the greater the specific capacity.
Good low temperature performance:
The lowest temperature limitation is minus 30℃. And it has good discharge performance. Although it is not the best one, it is enough for daily usage.
Because it has high energy density, compared with other kinds of batteries, a small volume can release the same energy. That is why many vehicles equip it.
What disadvantages does it have？
- Low output efficiency
- Fast capacity decay
- Poor safety performance:
Firstly, large-capacity ternary lithium batteries are difficult to pass safety tests such as pinprick and overcharge. Thus when you’re using it, you’d better follow charge instruction and don’t hit it.
Secondly, it has low flash point: when ternary lithium battery is heated or hit, it is easily to burn. Thus when you are using it, please protect it from hitting and heating.
Thirdly, because it will generate poisonous chemical gas when PH is acidic, you must keep your battery away from acid substance. And when gas releasing, wear a gas mask as soon as possible and let professional people to deal with it.
Is Ternary lithium battery safe?
Yes. Ternary lithium batteries must also be matched with a protection plate, which is also very important. It can protect the battery in the process of use. Overcharge, over-discharge, short circuit, over-temperature and over-current can be very effective control. This is a very important measure to improve the safety of ternary lithium battery.
Although it has a risk to explode or burn, ternary lithium battery technology is also in constant iteration. And now there is a significant improvement in safety. Ternary lithium battery has high popularity. Now, ternary lithium battery are gradually take place of other kinds of batteries.As long as you follow using instructions, you will be safe.
How to charge Ternary lithium battery?
- Using the supporting charger. When your battery is full, auxiliary charge for one hour is great. Otherwise, it may not reach the saturation state and affect its performance.
- 1.Charge it until it is 20% energy left. Excessive discharge will damage ternarylithium battery.
- 2.After charging, do not put the battery on the charger for more than 12 hours
- 3.Try to fill the ternary battery at one time.Charging time should not exceed 24 hours
- 4.Separate the battery from the mobile electronic products when it is not uselean
- 5.If you will not use your battery, please charge it in time.
What are the applications of ternary lithium battery?
Electric vehicles, electric system, laptop and etc.
How to store ternary lithium battery?
1.Store it in a dry and cool place.
2.Do not mix the battery with metal objects to decrease the risk of short circuit. Metal is conductive, once metal objects touch cathode and anode, it will damage battery.
3.Do not knock, needle, trample and refit battery.
4.Do not place the battery in high pressure.
Can we recycle ternary lithium battery?
First of all, scrapped ternary batteries contain many toxic and harmful substances (such as LiPF6). If not treated correctly, these substances will cause extremely serious pollution and do harm to the environment and ecosystem.
Secondly, metal materials are limited in earth. Ternary lithium battery contains rare precious metals like Co, Ni, Mn, Li and so on. If we handle them properly, we will protect animals and plants from metal pollution. On the other hand, we can save metal resources.
The recycling process of ternary lithium battery can be divided into four steps:
- Dischargebattery and disassemble them
- Separate materials of cathode
- Leaching positive active substance
- Collectrecycling production
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