Wednesday, 27 May 2015

Will The Alumium-Ion Battery Be Widely Applicated At Electronic Device?

Researchers at Stanford announced what many saw as a breakthrough in battery technology at April 6. It appears that there are several advantages of the aluminum-ion (Al-ion) battery over lithium-ion (Li-ion) batteries, the current standard for laptops, smartphones and other rechargeable devices:

1.Safety. Li-ion battery is a explosive materials that may burst into flames, which has led to a number of recalls since their introduction in early 90s. The video Stanford released shows researchers drilling a hole through their prototype without eliciting so much as a snarl.

2.Flexible. As Scientific American explains that the battery’s aluminum metal anode (negative side) is divided from its graphite foam cathode (positive side) by a liquid electrolyte separator, which, in consumer terms, translates into a pouch as bendable—even foldable—as an underfilled ketchup packet.
3.Can be fully charged incredibly fast. Researchers managed to charge a smartphone in a minute using their prototype while Li-ion batteries require hours to fully charged.
4.Much more charging cycles, completing over 7500 charge cycles without losing capacity, compared to the typical Li-ion battery’s 1000 cycles. Previous cracks at developing an Al-ion battery usually only managed about 100 cycles.

5,Lithium is much expensive than Aluminum.
According to the advantages said above, you might be saying, eureka, they’ve done it. Unfortunately, it may be too early to declare a breakthrough yet.

Disadvantages

The Al-ion battery’s energy density is a quarter of the typical Li-ion battery’s, according to Scientific American reports. Additionally, as Stanford chemistry professor Hongjie Dai admits, his team’s prototype “produces about half the voltage of a typical lithium battery.” He remains optimistic, however: “improving the cathode material could eventually increase the voltage and energy density.”

The same issue would likely make the Al-ion battery a no-go for smartphones and other portable devices, despite the fact that that application has generated much of the media buzz so far.

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