November 7, 2025 — Researchers at Texas A&M University have developed the first known metallic gel. Unlike everyday gels, like those used in hand sanitizers, hair products or soft contact lenses, this new material is made entirely of metals and can withstand extreme heat. The discovery could be a game changer for energy storage.
The gel is created by mixing two metal powders. When heated, one metal melts into a liquid, while the other stays solid and forms a microscopic scaffold. The liquid metal remains trapped inside this structure, creating a gel-like material that looks solid but contains liquid within.
Everyday gels are semi-solid materials containing an organic backbone holding liquids in place at room temperature. Unlike them, metallic gels require very high temperatures, which, depending on the metals used, can be around 1,000 degrees Celsius or 1,832 degrees Fahrenheit.
“Metallic gels have never been reported before, probably because no one thought liquid metals could be supported by an internal ultrafine skeleton,” said Dr. Michael J. Demkowicz, a professor in the Department of Materials Science and Engineering, who led the research. “What’s surprising in this case is that when the majority component — copper — was melted into liquid, it didn’t just collapse into a puddle. That’s what pure copper would have done,” he said.
Metallic gels made from highly reactive metals with strong electrical attraction, known as electronegativity, can be used as electrodes in liquid metal batteries (LMBs). In simple terms, these metals are very reactive and easily bond with other materials, which helps the battery work efficiently.
LMBs are special types of batteries that store and release large amounts of electrical energy. Instead of using solid materials like most batteries, they use layers of liquid metal. Because the parts are liquid, they do not wear out as quickly as regular batteries.
So far, LMBs have mainly been used in large stationary systems, such as backup power for building applications that need to keep running during a power outage. They have not been used in moving systems because the liquid inside shifts when the battery moves. This can cause a short circuit, which…