[Import] Stanford University's new notebook can last up to 40 hours

CNET Technology Information Network January 16 International report Stanford University researchers have a major discovery, laptop battery charging once can run for a day or longer.

Researchers have discovered a way to increase the battery of lithium-ion battery storage by 10 times, possibly extending the battery life of a laptop from the current 4 hours to 40 hours.

The new battery was developed by Yi Cui, a TA, and colleagues from the Department of material science and engineering at Stanford University. Cui said that this is not a small fight, but a revolutionary improvement.

Cui indicates that the increase in battery capacity is due to a new type of anode that utilizes silicon nano wires. The traditional lithium-ion battery uses graphite as the anode, which limits the number of lithium ions that can be attached to the anode, and thus limits the battery life.

Cui said in his paper that the silicon anode has the highest theoretically charged capacity, but the size of the silicon increases when it is charged, but it decreases when used, which damages the silicon anode, affects battery performance. This problem has not been solved in the past 30 years.

Cui and its colleagues studied this problem and solved it by making an anode using a silicon nano wire. In the anode made by Cui, lithium ions are stored in the "Forest" of micro-silicon nano wires, and the diameter of each silicon nano wire is only 1‰ of the thickness of the paper. When storing lithium ions, the size of the silicon nanoparticles is increased to 4 times that of the original one. However, unlike the old silicon anode, it will not be damaged.

Cui said there are still some difficulties to overcome to commercialize the technology. He said that we are conducting research to expand the scale of our technology and evaluate costs.

Cui has applied for a patent for this technology and is considering establishing a company or reaching an agreement with the battery manufacturer. He expects that products using this technology will be available for sale in the next few years.

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