American scientists say they have invented a cheap, durable and flexible aluminum battery for smartphones that can be used in just one minute. The researchers described in detail their findings that the new aluminum-ion batteries may replace lithium-ion batteries and are used in millions of laptops and mobile phones. They added that in addition to charging faster, new aluminum batteries are safer than existing lithium-ion batteries. Researchers have been working hard, but have not been able to develop an aluminum battery, a lightweight and relatively inexpensive metal, with high charging capacity.
The leadership team of chemistry professor Hongjie Dai was discovered by accident to find a good partner for graphite aluminum. In one prototype, aluminum was used to make a negatively charged anode while graphite provided the material as a positively charged cathode. Scientists said that the prototype aluminum battery was charged in one minute. Mr. Dai said: "Lithium-ion batteries can be a fire hazard. Our new battery will not catch fire, even if you drill through it." The new battery is also very durable and flexible. Large aluminum batteries can also be used to store renewable energy grids.
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