The 'reverse' design of the new lithium-ion battery: a hot charge at 60 degrees Celsius for only 10 minutes is full

We are still in pain waiting for the replacement of lithium-ion battery technology, which exists in the smallest electronic devices to Tesla self-propelled vehicles. Recently, a new study appeared, giving us another possibility, another technology could be the candidate for the promise that has existed for many years. The new research was published by the team of scientists at Pennsylvania State University in the journal Joule in late October.

They developed a new type of li-ion battery, which can be charged at high temperatures (more normal than li-ion batteries) to increase the rate of electrochemical interaction, but still cool enough when discharged. Given the 'actual' unit, the potential of this battery is to add to the electric vehicle 200 miles - about 320 km with 10 minutes of charging.

If this technology is scaled up, the new li-ion battery design will allow electric vehicle users to stop worrying about running out of batteries halfway.

New, rechargeable lithium-ion battery at high temperature to increase the rate of electrochemical interaction.

We know that electric vehicle batteries need to be charged quickly to meet the needs of users; The users here may be regular customers in an urgent situation, an ambulance / police car when taking patients to hospital / chasing an outlaw. However, such a quick charge will require the battery to quickly receive up to 400 kilowatts of power, a speed that no electric vehicle dares to reach because it will severely affect battery life.

While conventional li-ion batteries are charged and discharged at the same temperature, Pennsylvania State University researchers found that if they charge the battery at 60 degrees Celsius for a few minutes, then discharge the battery at The lower the temperature, the battery will no longer be 'damaged'.

' In addition to fast charging, this design allows us to limit the time it takes the battery to heat up, which will extend the battery life ,' said the lead author of the study, Professor Chao-Yang Wang. ' The key is to recognize when the battery heats up quickly, otherwise the battery will overheat for a long time, reducing battery life '.

In order to reduce the time it takes the battery to reach a high temperature, but at the same time increasing the battery temperature to 60 degrees Celsius evenly, Wang and his colleagues covered the li-ion battery with a self-heating structure, preheated in for 30 seconds. To test the whole new battery system, they used a variety of cooling measures to keep the battery at a constant temperature. To confirm that the battery had no problems, they pulled the battery out to check it after the test.

The research team found that if the battery was set to a temperature of 60 degrees Celsius, the entire system could maintain 1,700 quick charge cycles and discharge the battery.

By setting the battery to 60 degrees Celsius, the entire system can maintain 1,700 quick charge cycles and discharge the battery.

' In the past, we still believed that li-ion batteries had to avoid high temperatures for fear of negative reactions ,' Professor Wang said. ' New research shows that high temperatures may be beneficial for batteries, when exposed to batteries for a certain amount of time, the benefits outweigh the disadvantages .'

The scientists also stressed that the technology could be scaled up many more times, because nearly every device used in the test was available; moreover, they also tested the battery on a large scale and showed positive results. The veneer will increase the production cost of the battery by about 0.47% per unit of battery, but because the new design does not require some of the components inherent in modern batteries, the actual cost may be cheap. than.

The team is trying to go one step further, trying to see if it can fully charge in just 5 minutes. We all look forward to the good news from them.