00:00Researchers in South Korea are developing a new way to make electric vehicle batteries more durable.
00:05The team from CAST focused on anode-free batteries,
00:08which eliminate materials such as graphite to save weight and space.
00:12But these batteries face a major challenge during repeated charging.
00:16Lithium can build up unevenly on copper foil, forming sharp structures called dendrites.
00:22These growths can reduce battery performance and shorten its lifespan.
00:25To tackle the problem, researchers borrowed nanoscale manufacturing techniques from the semiconductor industry.
00:32They coated the copper foil with roughly 10 nanometers of MXene.
00:36The material helps form a stable protective layer, rich in lithium fluoride.
00:41Researchers also created microscopic tubes across the copper surface.
00:45Each tube measures about 300 nanometers wide and 150 nanometers high.
00:51Together, the structures increased the available surface area to roughly four times that of flat copper.
00:57This gives lithium more room to spread evenly, instead of forming concentrated spikes.
01:02The researchers say the approach adds little weight or bulk.
01:05The technology could support smaller, lighter, and longer-lasting high-energy batteries.
01:10CAST researchers hope the advance can help accelerate the commercialization of anode-free EV batteries.
01:16Disclosure.
01:17This video contains stock footage and content created or enhanced using AI-assisted tools.
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