A new generation of battery coating lithium battery industry
Publish：Sino Energy Corporation Time：2017-05-10
A team of researchers at the University of California at Riverside have been studying the lithium battery coating, has made great achievements, they successfully developed a lithium battery coating, thereby improving the service life of the battery. They found that if the battery is called organic composite coating of methyl viologen coverage will miraculously eliminate dendritic growth, and the battery life is increased by three times.
Lithium battery is the standard configuration of notebook computers, smart phones and electric vehicles. The anode of a lithium battery is usually made of graphite or a similar carbon based material. However, due to its weight and energy density, the performance of the battery is limited by carbon based materials. Now, the focus is on the development of lithium metal anodes, because if the development is successful, they will increase the battery capacity of five to ten times. Lithium metal anodes are lighter and cheaper than the current ones.
However, lithium metal as a negative electrode is also a serious drawback: during the charging cycle, lithium will not be able to control the growth of dendritic metal, looks like the microscopic structure of the tree bud. This is a problem, because these dendrites reduce battery performance, and may pierce the internal short circuit and cause a fire or even an explosion.
The development of methyl viologen coating has the potential to revolutionize lithium metal battery life. The coating eliminates the dendrite growth, and the battery life is increased by more than three times. The coating can be dissolved in the electrolyte in the charge state. When the molecules are exposed to the lithium metal, they are reduced to form a stable coating on the metal electrode. Methyl viologen at very low cost, can be mass production.
"This may change in the future," said Wang Chao Riverside UC, assistant professor of chemistry, he is also the author of "low cost, and easy to operate, the lithium battery industry at present, is a very timely assistance to find."
By creating a stable operation of the lithium metal anode, the researchers have developed the next generation of high-capacity batteries, including lithium batteries and lithium air batteries.
