【缺电族看过来,一分钟就可以充满的铝电池】

 

【缺电族看过来,一分钟就可以充满的铝电池】斯坦福大学的研究人员开发出铝离子电池。实验中发现,铝离子电池拥有很完美的属性,不会爆炸,充电次数可达7500次,只需要1分钟就可充满,可以弯曲折叠,并且比锂电池更加便宜。但目前铝电池只能产生锂电池一半的电压,正在进一步研究。

来源:http://mashable.com/2015/04/07/aluminum-battery-one-minute/

Researchers build aluminum battery that can be charged in one minute

 

If there's one major issue plaguing smartphones, smartwatches and other gadgets we use every day, it's battery life. Now, a team of researchers at Stanford University has built an aluminum-ion battery prototype which offers several improvements over today's ubiquitous lithium-ion batteries, including super-fast charging times.

Aluminum-battery

The team's aluminum-ion battery sounds like a dream come true for gadget manufacturers — a perfect battery with few flaws.

Until now, aluminum-ion batteries weren't able to produce a high enough voltage, especially after many recharge cycles. But the prototype created by the Stanford researchers consists of an aluminum anode and a cathode made of graphite — a combination of materials that allows for producing sufficient voltage (about two volts), even after thousands of recharge cycles.

The battery can recharge in one minute, it's flexible (meaning it can be bent to fit more snugly into various gadgets), and it's potentially inexpensive, since aluminum is cheaper than lithium. Furthermore, the materials are safer than the ones in lithium-ion batteries, which can catch fire in certain situations. In contrast, the aluminum-ion battery won't catch fire even if you drill a hole through it while it's working.

"Our battery has everything else you'd dream that a battery should have: inexpensive electrodes, good safety, high-speed charging, flexibility and long cycle life,"

"Our battery has everything else you'd dream that a battery should have: inexpensive electrodes, good safety, high-speed charging, flexibility and long cycle life," Hongjie Dai, a chemistry professor at Stanford who's leading the research, told Stanford News. "I see this as a new battery in its early days. It's quite exciting,"

There is one issue that needs to be solved before the battery goes into mass production — while the Stanford team's battery offers voltage higher than any other aluminum-based battery, it's still lower than the voltage of your average smartphone lithium battery, which is typically 3.7V or 4.2V.

Dai believes overcoming this problem is not impossible. "Improving the cathode material could eventually increase the voltage and energy density," he said.

In the video posted on YouTube by the Stanford researchers (below) you can see a prototype of the battery powering an LED light while being bent and drilled through. The battery is also seen powering a smartphone, and another potential application mentioned is storing energy on the electrical grid.


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