1. What is the difference between lithium-ion accumulators and other chemical sources of electric energy?
The current carrier in a lithium-ion accumulator (LIA) is positive lithium ion, which is capable of penetrating (intercalating) a crystalline grid of other substances (for instance, graphite, oxides and metal salts) and forming a chemical bond: it can penetrate graphite and form LiC6, oxides (LiMO2) and metal salts (LiMRON).
2. Is the application of lithium-ion accumulators a reliable and tested solution? I’ve heard they explode.
Lithium-ion accumulators are known since 1990. In lithium-ion accumulators of the first generation anode received from lithium metal was used, and at it in the course of repeated charge-discharge cycles spatial formations (dendrites) arose, it caused bridging of electrodes and, consequently, ignition or explosion. This problem was solved thanks to the replacement of anode by graphite. Similar processes were also developed in cathodes of lithium-ion accumulators based on cobaltous oxide in the event of violating conditions of use (overcharging). Accumulators based on lithium-ferrum-phosphate are completely free of these disadvantages.
3. Where are lithium-ion accumulators currently used?
Lithium-ion accumulators have a wide range of application, from laptops to energy storage units for power stations.
4. What is the structure of a lithium-ion accumulator?
The lithium-ion accumulator includes electrodes (cathode material on aluminium foil, anode material on copper foil), divided by porous retainers treated with electrolyte. A package of electrodes is placed in a sealed case, and cathodes and anodes are connected to terminals/current collectors. The case is equipped with a safety valve to relieve internal pressure in emergency situations and in the event of violating conditions of use.
5. What types of lithium-ion accumulators are most popular and what is the difference between them?
Lithium-ion accumulators mainly vary in type of cathode material that is used. Until quite recently, lithium-cobalt accumulators were very widespread. They have now been superseded by lithium-ferrum-phosphate accumulators which are safe, cheap and non-toxic.
6. What is the price of lithium-ion accumulators that you produce?
The prices can be found on the Products page. We are not engaged in retail sales. The minimum batch size which we will agree to negotiate is 3 mln A*h.
If you are interested in purchasing a smaller quantity of accumulators, then go please to the page “Our partners”, where you will find a list of companies we work with. Liotech cooperates with engineering companies which use our lithium-ion accumulators in their solutions. Our accumulators are supplied with a Battery Management System (BMS), which enables us to provide a guarantee for our products.
7. Is it possible to charge electric transport equipped with lithium-ion accumulators from a 220V network?
Yes, it is. For this purpose, vehicle-borne charging devices, located on board of electric vehicles, are used. If you want to charge your vehicle faster, you will need more powerful stationary devices.
8. Is it difficult to recycle LIB and is it harmful for the environment?
Liotech uses and constantly develops technologies of recycling of lithium-ion accumulators that it produces. Currently, more than 80% of materials in an exhausted accumulator can be recycled. The recycling process includes several stages:
Opening of an accumulator in a dry room and contents (core) extraction
Washing out of electrolyte that includes lithium salts
Detachment of the cathode and anode plates
Dissolution of adhesion (binding agent) and removal from plates of up to 70% of cathode and anode materials
Recycling (remelting) of copper and aluminium plates
Crushing and recycling of case plastics (later on it serves as an additive to improve the quality of road pavements)