Stanford University

A Way to Extend Laptop Battery Time to 40 Hours is Discovered

Stanford University, the newly discovered laptop battery life of up to 40 hours
Stanford University researchers has made a major discovery, notebook battery can run once a day or even longer.

     Researchers have found a way to make lithium-ion battery storage capacity 10-fold increase, which may be notebook battery life from the current 4 hours extended to 40 hours.

Cui said that the battery capacity of the increase is due to use of a new type of silicon nanowire anode. Traditional lithium-ion batteries use graphite as the anode, which limits the anode can be attached to the number of lithium ion, but also limiting the battery life.

We can thank Stanford University Assistant Professor Yi Cui and his buddies at the Department of Materials Science and Engineering for this breakthrough. Scientists have known for a long time – the article says 30 years – that silicon anodes would extend the charging capacity theoretically. But when you add lithium, the silicon anodes would change volume by 400 percent, according to the Sci-Tech Today article.

Cui and his amigos figured out the anode could hold 10 times the lithium if they used a sponge-like network of silicon

if commercialized successfully, could mean laptop battery life extended tenfold from what we know now. The breakthrough came about when researchers replaced the battery anode’s typical graphite nanowires with silicon ones. The Stanford team has filed a patent for the technology and estimates the potential two-day batteries could hit the market within several years.

Good fellas at the Stanford Tech are researching and developing a battery that will be able to keep you notebook powered for a whopping 40 hours! This new kind of lithium ion battery will be available in a few years time. Stanford Tech researchers including Professor Yi Cui and his team have brought alive an old but abandoned method for charging the batteries: Silicon anodes. These have a theoretical capacity ten times larger than that of the graphite anodes currently used, but were left for dead, as they expand up to 400 times when charged, smashing themselves in the process. However, if the silicon is made into nanowires the problem diappears.

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