What is the sodium ion battery?She finally finds how

The Nobel Prize in 2019 awarded the "Sanjie of Lithium Battery" to affirm that they "created a charging world."

But after lithium batteries, who can become a qualified "successor"?

Many scientists focus on sodium ion batteries.

A "17th Chinese female scientist" award -winning list announced recently, a "sodium ion battery" researcher was on the list.

She is one of the representatives of my country's new high -efficiency energy storage materials and devices -professors and Yu Yan of the University of Science and Technology of China.

Yu Yan

Is lithium batteries not eating incense?

While people enjoy the convenience brought by the lithium battery, they ponder how to eliminate lithium batteries -this behavior of sounding a little "scum" is a helpless move in the final analysis.

The reason why lithium batteries have "rampant" battery industry for many years, and even won the "one brother" position, which is inseparable from its own advantages.

Strong battery life and long service life, the most concerned point that these two consumers are most concerned, almost made it invincible; coupled with the stable chemical properties of lithium battery, even if they are in an abolition state, they are caused by the environment and the environment. The harm is very small ... In the face of these advantages, it is difficult to make people think about it.

So why do we find a substitute for lithium batteries?

This is mainly due to cost considerations.

Many new energy vehicles choose lithium batteries

In fact, the price of lithium carbonate for lithium battery production -lithium carbonate has been rising.

The latest data shows that the quotation of battery -level lithium carbonate on July 18 has reached 470,000 yuan/ton, an increase of more than 50%from 311,500 yuan/ton earlier this year.

Among the vehicles equipped with lithium iron phosphate batteries and the vehicle equipped with ternary batteries, the cost of lithium resources accounted for 8.42%and 7.89%, respectively. According to estimates, the cost of lithium price per ton is 100,000 yuan, and the cost of lithium iron phosphate batteries rose by 3807 yuan; the cost of serving with a ternary battery was 5363 yuan.

In this context, the "sodium ion battery" with similar chemistry, better raw materials, and lower preparation costs naturally become the first choice for "substitutes".

According to relevant data, the cost of the positive electrode material of sodium ion battery is only about 40%of the lithium battery.

As long as the related technologies of sodium ion batteries are overwhelmed, I am afraid that there is no cheap battery?

In this way, take the road to sodium ion battery research

The study of Yu Yan's "sodium ion battery" can be traced back to 2002.

That year, she was admitted to the University of Science and Technology of China to study the "secondary battery" with the instructor.

The so -called "secondary battery" is relative to the disposable battery we used to. It can be charged and can be used repeatedly. It is the most prominent advantage of "secondary battery". The lithium batteries we use now, including sodium ion batteries that are still developing, are actually the "secondary battery" category.

That is, during the relevant research, Yu Yan discovered the potential of sodium ion batteries.

A scene of the University of Science and Technology of China

In addition to the advantages of chemical properties and costs, the most attractive thing about Yu Yan is the huge space involved in the technology involved in sodium ion batteries.

In terms of straightforward point, scientists related to various countries have studied for so many years, and they have not perfectly solved the bottleneck of sodium ion battery battery power storage capacity and shorter cycle life.

For these two very obvious "shortcomings", some people think that the energy density of sodium ion batteries should be further increased, and some people feel that it is not necessary to completely replace the lithium battery for sodium ion batteries. Do partial replacement in the field ...

It is these different views that Yu Yan realized that she could play in this field.

Make up the shortcom

Yu Yan was born in the research direction of "high -performance sodium ion battery electrode materials and devices" after determining the "high -performance sodium ion battery electrode material and device".

Sodium ion batteries are mainly composed of positive poles, negative materials, diaphragms and electrolytes.

"Single alone" cannot be done. Yu Yan feels that if you want to improve the performance of sodium ion batteries as a whole, you must rely on the "combination boxing" -trimination of positive materials, she and the team successfully revealed the electrode material "ions, electronics, electronics , Charging Transmission Collaborative Enhancement "mechanism; Facing the negative electrode materials, they proposed the strategies of multi -phase and multi -scale collaboration to regulate electrode material conductivity, ion transmission efficiency and volume effect.

In the optimization of the performance of sodium ion battery components, Yu Yan also further proposed the "sodium ion battery flexible entire battery" and "" sodium ion battery "and" high number of cycles, and high use efficiency, " Sodium ion battery An timing soft bag battery ". At present, they have exchanged with many companies in the industry to make efforts to promote the industrialization of energy storage batteries.

In July 2021, the domestic manufacturer Ningde era released the first generation of sodium ion batteries developed with a live broadcast of only 10 minutes, and said that it would realize industrialization in 2023. Other domestic battery leading companies, such as Penghui Energy, Rongbai Technology, and Long -term Lithium, have also put on the development of sodium ion batteries on the agenda.

Yu Yan once said: "Scientific and technological innovation is not just a research in the laboratory, but to transform into a real driving force for economic and social development, and to provide the people with a more convenient and better life for the people. This is the mission of scientific researchers."

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