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Chinese Scientists Reveal That Bending Salty Ice Releases Electricity A Thousand Times Stronger And May Turn Ice Into A Clean Energy Source.
For many people, ice is just a problem. It makes roads slippery and sidewalks dangerous. Most try to avoid this frozen water.
But new research shows a totally different side of it. Scientists have discovered that ice can generate electricity when it is bent and receives salt.
The idea seems strange, but it comes from Xi’an Jiaotong University in China.
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The team led by Xin Wen revealed that ice is flexoelectric. This means that it creates electricity when deformed.
Until now, no one had been able to make this effect work strongly enough for practical use.
The Secret Is In The Salt
The big breakthrough happened when researchers mixed common salt in the water before freezing.
They created pieces in various shapes, such as cones, beams, and plates, and tested the energy they could generate.
In the tests, the team placed the samples between two supports and pressed them in the middle. This motion bent the ice and generated electricity.
The numbers were surprising. The salty ice produced up to a thousand times more electric charge than pure ice.
Microscopy and Raman spectroscopy analyses showed the reason. The salt prevents the water from fully freezing and leaves small channels of salty water within the ice.
When the piece bends, this water moves through these channels. Since moving water carries electric charge, it creates a continuous current.
An Enormous And Icy Potential
The discovery opens a huge field of possibilities.
Ice covers about 10% of the planet’s surface. If scientists can harness this effect, the frozen regions of the world could become unexpected sources of clean and renewable energy.
The team itself highlighted this vision. According to them, the high flexoelectricity of salty ice brings the idea of generating energy from ice closer to reality.
They also suggest that this effect could explain electrical activity in ice-covered regions and even in frozen ocean worlds, like Europa and Enceladus.
Hard Limits In The Way
Despite the excitement, the tests also showed problems. Salty ice pieces lose strength after many cycles of use.
The ability to generate energy can drop by up to 80% over time. Furthermore, the process still loses a lot of energy in the form of heat.
Another challenge is in comparison with commercial piezoelectric devices. They are much more efficient. Today, salty ice still cannot compete with them in performance.
A New Look At Ice
Even with these obstacles, the discovery excites researchers. They envision structures made of salty ice generating electricity in cold regions where installing other energy sources is complicated. They also think about testing the phenomenon on frozen moons in the Solar System.
The study is just beginning. Engineers still need to reduce losses and increase durability.
But the research changes the way we see ice: not just as a danger, but as a possible ally in the transition to sustainable energy.
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