1.
According to the article, which project is Professor Yi Cui working on?
Digital devices, such as smartphones and tablets, are advancing at a rapid pace, but the lithium-ion (Li-ion) batteries that power the devices have not developed correspondingly. However, an ongoing research by Yi Cui of Stanford University promises to deliver a battery that can hold five times more energy than today’s Li-ion batteries.
A Li-ion battery consists of two electrodes (an anode and a cathode), where the anode is made up of graphite and the cathode is lithium cobalt oxide. However, Yi Cui’s team intends to increase the lithium content substantially by having a lithium anode and a sulfur cathode. That will increase power because lithium-metal anodes have the highest energy-storing capacity of any known material.
Although lithium has a high chemical reactivity and is therefore a great fire hazard, Dr Cui and his team plan to make it safer by covering the lithium anode either in a thin film (5,000 times thinner than a human hair) or by using boron nitride or grapheme.
Dr Cui is confident that his team’s research will ultimately lead to mass production of a powerful and safe lithium battery.
According to the article, which project is Professor Yi Cui working on?
A Li-ion battery consists of two
Yi Cui belongs to which institution?
An ongoing research by Yi Cui of Stanford University promises to deliver a battery that can hold five times more energy than today’s Li-ion batteries.
In the above sentence, what does the word ongoing mean?
Dr Cui is confident that his team’s research will ultimately lead to mass production of a powerful and safe lithium battery.
In this sentence, what is the meaning of confident?
Based on the information in the article, what will be the advantage of the battery being developed by Professor Cui’s team?
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