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How Lithium Battery Became a Nobel Prize Achievement

(Summary description)Nobel Prize Achievement in 2019-Lithium Battery

How Lithium Battery Became a Nobel Prize Achievement

(Summary description)Nobel Prize Achievement in 2019-Lithium Battery

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When you use the mobile terminal to browse the latest news of the Nobel Prize, will you think that your mobile terminal power supply - lithium battery, is this year's Nobel Prize!

 

The royal Swedish academy of sciences announced on the afternoon of October 9 that the 2019 Nobel Prize in chemistry will be awarded to professor John gutiernaev, professor Stanley wittingham and Dr. Yoshino for their outstanding contributions in the field of lithium batteries.

 

How can lithium batteries, which are widely used in People's Daily life, become the result of Nobel Prize? It starts with the idea of batteries replacing oil.

 

 

 

 

 

In 1973, the fourth Middle East war caused the first oil crisis, and the United States and other developed countries realized the importance of getting rid of oil dependence and began to invest in battery research. Batteries can not only replace oil as new energy for automobiles, but also become energy storage devices for solar energy, wind energy and other renewable energy. As a result, interest in developing such batteries has never been higher.

 

The first to break through was Stanley whittingham, who drew up the initial design for the lithium-ion battery: titanium sulfide as a positive pole and lithium metal as a negative pole -- a battery that was proved to be able to charge and discharge. The problem of the energy density of battery materials, which has puzzled scientists for more than 100 years, was solved one by one by whittingham.

 

But as time went on, it was found that it was not safe to use lithium as a negative pole. With the increase of the number of use, lithium battery will continuously precipitate dendrites and eventually causes spontaneous combustion of the battery.

 

Is there a solution to solve this problem? At the age of 97, professor gutiernaev is the oldest Nobel laureate in history.

 

In 1980, gudinauf's team found a layered oxide positive material- lithium cobalt oxide battery, which is still used in all kinds of mainstream consumer electronics. Together with the negative pole of lithium aluminum alloy, gudinauf brought us to the era of portable mobile phones and laptops.

 

In 1997, at the age of 75, gutiernaev and his team developed a more stable and safe positive material-lithium iron phosphate. It is the mainstream material of batteries used in electric cars, electric buses, electric ships, large-scale energy storage, communication base stations and data centers.

 

Only wider application can promote the further development of lithium battery. How can experimental battery materials be integrated into usable devices that can actually be used in small objects? Japanese scientist akira yoshino did it.

 

In 1990, after 10 years of research, akio yoshino, then a researcher at a company, succeeded in using carbon instead of lithium alloy as the negative electrode of the battery, and in combination with goodenave's lithium cobaltate positive pole, the battery became safer and greatly reduced the risk of spontaneous combustion.

 

According to yoshino's research, SONY officially launched the world's first commercial lithium battery in 1991. They then replaced the carbon cathode with graphene, further improving the battery's safety, energy density and cycle life.

 

Compared with lead-acid battery and nickel-silicon battery, lithium battery has the advantages of high energy density, long life and no memory effect.

 

Recalling the past years, the electric car was invented long before the internal combustion engine. But as the efficiency of internal-combustion engines improves, batteries are becoming less energy-dense, making electric cars obsolete. Now, electric cars are back in people's sight, and an important premise is that lithium batteries, originally intended to replace oil, have finally taken on an important historical mission.

 

The global lithium battery industry is now worth nearly $50 billion and is growing at more than 10 percent a year. Lithium battery has penetrated into every aspect of human life, and its invention has supported the continuous development of high technology in human society.

 

 

Obviously, lithium battery has become the result of the Nobel Prize, worthy!

 

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