2024-01-13 13:11:00
Development of lithium metal anode all-solid-state battery
Maintains 80% performance even after charging and discharging 6000 times
A new all-solid-state battery technology has been developed that can be fully charged in 10 minutes and maintain 80% capacity even after charging and discharging 6,000 times.
A research team at Harvard University’s School of Engineering and Applied Sciences (SEAS) developed an all-solid-state battery the size of a postage stamp using a lithium metal anode and published the research results in the international academic journal ‘Nature Materials’ on the 8th.
“Lithium metal anode batteries have 10 times the capacity of commercially available graphite anodes and can significantly increase the driving range of electric vehicles, so they are considered the ‘holy grail of batteries,’” said Xin Li, associate professor of materials science at Harvard SEAS. “The results of this study are significant in that they represent an important step forward for industrialization and commercial applications.”
Until now, lithium metal anode batteries have much better capacity, but have had the problem of being too unstable for practical use. Due to the plating process, there was a risk of short circuit or fire during the charging process. The research team overcame the problem by using micron-sized silicon particles in the battery anode.
“We implemented lithium metal to surround the silicon particles, like a hard chocolate shell surrounding a hazelnut,” said Xin Li, associate professor of materials science at Harvard SEAS.
As a result of demonstrating a postage stamp-sized battery made in this way, it was fully charged in 10 minutes and maintained 80% of its capacity even after 6,000 charging and discharging times. This is superior performance to all-solid-state batteries that have been introduced so far. Additionally, the researchers explain that it is 10 to 20 times larger than the coin-sized cells made in most university labs.
For commercialization, the research team received support from Harvard University and transferred the technology to Adden Energy, co-founded by Professor Shin Lee and three Harvard University graduates. The company has expanded its technology to create a smartphone-sized pouch cell battery.
Aden Energy, which received a seed investment of $5.15 million, plans to commercialize this technology and enter the market before 2030. Reporter Lee Jun-ki [email protected]
[ 저작권자 ⓒ디지털타임스, 무단 전재 및 재배포 금지 ]
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