lithium ion battery cells 18650

New aqueous lithium ion battery cells 18650 developed successfully

Making batteries stable while working and not catching fire or exploding is one of the efforts of electronic equipment manufacturers, and a new lithium ion battery cells 18650 technology that has recently come out claims to be able to do this. This aqueous lithium ion battery cells 18650 may not have the same lithium ion battery cells 18650 life as the batteries currently used in mobile phones, but it is important for solving lithium ion battery cells 18650 explosion problems.

Lithium-ion batteries are the most common type of lithium ion battery cells 18650 currently, with an electrical conductor, or electrode, at each end. When electrons move from one electrode to the other end - the electrolyte in the middle helps the electrons move - the lithium ion battery cells 18650 is charged and discharged.

In most cases, the electrolyte is made of flammable organic chemicals. Although fire-resistant aqueous electrolytes do exist, the performance of this lithium ion battery cells 18650 is not particularly strong because water is not very active.

But now, scientists have developed a lithium-ion lithium ion battery cells 18650 using an aqueous electrolyte that does not have the risk of explosion and can also reach a voltage of 4V - which is already the level of ordinary organic electrolytes.

It is reported that this aqueous lithium ion battery cells 18650 was developed by Professor Wang Chunsheng of the University of Maryland and his team. Two years ago, Professor Wang's team developed an aqueous electrolyte that can reach a voltage of 3V. Although this electrolyte is safe, it will cause the electrode to degrade, so it cannot store much energy.

However, this time, the aqueous electrolyte developed by the research team has a function that only organic electrolytes have: a solid coating that can prevent electrode degradation.

In lithium-ion batteries using organic electrolytes, some chemical elements will decompose during the first charge to form a solid protective layer attached to the surface of the electrode, which is called the "solid electrolyte interface" (SEI).

Aqueous electrolytes generally do not have SEI because decomposing water does not produce any chemicals to form a solid layer. But the electrolyte produced by the research team has a very high salt concentration that can form SEI. In this way, the safety of the lithium ion battery cells 18650 is not only more guaranteed, but the electrode is also protected, which can store more energy.

Although this lithium ion battery cells 18650 is better than other aqueous batteries, there is still a big limitation: their lifespan is only about 70 charging cycles, while lithium ion battery cells 18650 manufacturers hope to reach at least 500. "The next step is to extend the charging cycle," said Chongyin Yang, a member of the research team. "We are very eager to commercialize this technology and bring it to market."

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