German scientists have figured out how to increase the capacity of lithium-ion batteries by 30%

Lithium ion batteries - this is still no alternative embodiment the accumulation and use of electricity and It is not surprising that many research teams are working to make these devices as much as possible effective.

German scientists from the Karlsruhe Institute of Technology was able to understand the mechanism of degradation of cathodes high-energy lithium-ion batteries, which will significantly increase the capacity and impact of batteries increased capacity.

Why is it important

At first glance, it sounds strange, what's the enigma mechanism of degradation and increase capacity? Yes, the whole point is that without a real understanding of the mechanism of degradation of the cathode is simply impossible to successfully increase the battery capacity with high efficiency.

A mechanism of an enigma, as we are assured, scientists, will increase the capacity and return immediately to 30%, which is not even enough.

The essence of the degradation process

Currently, there are already a lithium-ion batteries with increased efficiency and capacity, and this advantage in container sold by the fact that the cathodes element enriched with an increased amount of manganese and lithium. But such a combination, as shown, are prone to rapid degradation.

In a typical charge-discharge cycle such enriched cathode loses or gains of lithium ions and high energy material begins to disintegrate. Just a few cycles laminate cathode acquires a crystalline structure with undesirable electrochemical properties, which leads to a decrease in capacitance.

As a result of extensive experimentation research team found out that the degradation process takes place not directly and indirectly, that is through the formation of difficult to detect reactions to form a lithium-containing solid salts.

In addition, it was found that pure oxygen is actively involved in these processes.

Additionally scientists identified electrochemical processes, which do not lead to degradation of the cathode destruction. Here on these open processes and the emphasis is in the development and production of lithium-ion batteries of the future with increased capacity and efficiency. The original publication was in the magazine Nature Communications.

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