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Afterwards, John Goodinav synthesized a compound called lithium cobalt oxide. Lithium cobalt oxide is a layered compound that can be used as a lithium source for lithium-ion batteries. Its structure is still stable, which is Goodinav's contribution. After reading Gudinav's article in 1978, Yoshino Masahiro came up with a way to make a battery using it. Its negative electrode does not use metallic lithium, but uses carbon fiber as the negative electrode to make this type of battery, which later became known as a lithium-ion battery.
In fact, lithium-ion batteries have changed the world, and the biggest change is that they have brought many convenient places to our daily lives. The Nobel Prize states that from consumer electronics such as smartphones and laptops to large energy storage devices such as electric vehicles and wind and solar energy, lithium-ion batteries have become an indispensable energy source in our daily lives. I have been dealing with lithium-ion batteries for about forty years, and today I would like to communicate with you about lithium-ion batteries and "electric China".
1. How does China's lithium-ion battery industry achieve leadership?
From the global market share ranking of electric vehicle battery companies in 2018, the top 10 is CATL, which ranks first. The second place is Panasonic from Japan, and the third place is BYD, a total of 10. In 2018, six lithium-ion battery companies in China ranked among the top ten in the world market share of power lithium-ion batteries. Ningde Times is 37.23%, firmly ranking first, while Panasonic Corporation of Japan is only 21.54%, ranking second, but less than ten percentage points.
What is the top production of lithium-ion batteries in China? This should start from the beginning.
The research on lithium-ion batteries in China is not late and is almost synchronized with the world. Before Christmas in 1976, the Academy of Sciences dispatched me to West Germany. At that time, Germany was not yet unified, and East and West Germany were separated. I went to the Mapu Solid State Institute in Stuttgart, West Germany for further studies, and I quickly realized that everyone in the institute was studying the properties of lithium nitride crystals. I felt very strange, why are everyone so interested in lithium nitride? At that time, it was only understood that lithium nitride is an ionic conductive material, which is said to be a conductor called a superion and can be used as a battery for automobiles. After hearing this sentence, I immediately thought in my mind whether I wanted to change direction.
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