Central Media Guanyu 丨 Pursue me in the ultimate "lithium"

The new energy vehicle industry is a new industry supported by my country, and lithium batteries are the key components of new energy vehicles. In recent years, the rapid growth of the new energy vehicle industry in my country has a lot to do with my country's manufacturing capabilities on lithium batteries. The manufacture of lithium batteries requires four key materials: positive electrode, negative electrode, electrolyte, and diaphragm. Now these four key materials have all been localized, which has flattened the development of the entire lithium battery industry in my country. Among them, it is inseparable from the collaboration of upstream and downstream industrial chains, and it is inseparable from the role of the invisible champion. Today we come to know the two invisible champion companies in the lithium battery industry.

In 2021, the output of power lithium batteries in my country reached 219.7GWh, an increase of 163.4%year -on -year. Eight of the top ten global power batteries were Chinese companies. According to statistics from the International Energy Agency (IEA), China's lithium battery production accounts for more than three -quarters of the global market.

The electrolytic solution is an important part of the lithium ion battery. The blood of the lithium battery is very important to the performance of the battery. Lithium hexifluoro is the most important core component in the electrolyte. About 50%. In 2021, the total output of lithium global hexofluorophosphate was 68,000 tons, of which nearly one -third of which came from China Polyfluoro multi -new material Co., Ltd.. Since 2014, polyfluorofo multi -year production has ranked first in the world for 8 consecutive years. Essence

Speaking of today's corporate status, Li Shijiang, chairman of Duofluoro Materials Co., Ltd., was full of anger, and more than ten years ago, he dared not think about it. At that time, the core raw material of China's lithium battery electrolyte, the lithium hexafluorophosphate, all rely on imports. In 2006, Li Shijiang went to a foreign company to produce lithium hexofluorophosphate.

Li Shijiang, chairman of Duofluoro Duoxin Materials Co., Ltd., said: "Good talk, just do not let the production line. He said that lithium hexarin is the result of long -term technology accumulation. You really can't do this."

Lithium hexal fluoropensive is the "Pearl in the Crown" in the field of fluorine chemicals. It cost more than 1 million yuan per ton in that year. So Li Shijiang was determined to develop lithium hexofluorophosphate. At that time, the company did not even have the most basic equipment required for experiments. They could only start from scratch according to the existing chemical principles.

Yan Chunsheng, chief engineer of Duofluoro Duoxin Materials Co., Ltd. said: "They are highly toxic, high -risk, and high -corrosion raw materials. There is no cooling device in summer. How to get it from the experimental bottle from the production line, I opened it for the first time, but I shook my hand, and I was scared. "

In the process of technological tackling, the R & D team has encountered several explosions. Although it has not caused casualties, it also allows everyone to tremble every step, such as thin ice.

After two years of hard work, in 2008, polyflorism finally developed lithium hexfluorophosphate. Although only two grams were only two grams, it made the enterprise rejoicing up and down. After continuous research iterative iteration, in 2011, the output of polyfluorofluorophone lithium phosphate reached 1,000 tons, becoming the first domestic self -developed and industrialized lithium hexafluorophosphate supplier.

Because of the technical breakthroughs and the support of the national new energy industry, more than the second prize of the National Science and Technology Progress of Scientific and Technological Progress in 2017, and trained a number of skill -oriented talents. They continue to summarize their experiences in practice and improve production standards. Feng Xiaogang is the director of a multi -fluoride branch. The factory mainly produces electronic -grade hydrofluoric acid. This is a high -purity electronic chemical. It is a key material for etching and cleaning semiconductor chips. The requirements are extremely high, so each operation of the production process and the purity of the production environment has the most stringent standards. Even the working status of employees must be kept stable.

Skills talents in various links are condensed together to create first -class products together. To continuously improve and be invincible in global competition, we must not only cultivate and rely on internal talents, but also use the "brain" of external wisdom.

On August 6, Li Shijiang led the senior management team of polyfluoro to communicate with the professors of the Department of Chemical Engineering of Tsinghua University. The two -day meeting mainly focused on key technical research and industrial development planning. With the help of "external brain" to practice internal skills and strengthening industry -university -research cooperation, Dorflo has not been interrupted over the years.

Not long ago, polyfluoro announced that the PPT -grade electronic -grade hydrofluoric acid they produced was officially entered the US and South Korean markets, and officially entered TSMC's qualified supplier system. This means that their products have been recognized by the strongest player in the world semiconductor industry.

To produce PPT -level electronic -grade hydrofluoric acid, it is necessary to reach one -trillionth of cleanliness. This is the world's highest level for semiconductor electronic hydrofluoric acid. Multiofluoro is to overcome this "card neck" technology. 12 years.

In addition to the electrolyte, there is also a key component with technical barriers -diaphragm. The diaphragm is a film with a microporous structure. It directly affects the battery capacity, cycle and safety characteristics. Essence The world's first company that proposed the concept of power lithium battery diaphragm is Xingyuan Material Technology Co., Ltd. from China. In 2021, my country's diaphragm enterprises have occupied more than 70%of the world's markets, and the leading enterprise manufactured by the diaphragm has ranked among the top. Since 2020, the market share of the lithium battery septum market has entered the top three worldwide. Xingyuan material was formerly a company that sells lithium battery diaphragm. More than 20 years ago, the technology and production of lithium battery diaphragm were monopolized by foreign companies. Not only were the price expensive, the supply was small, and the amount of money was qualified to spend money. In 2003, they did not want to be stuck around their necks and decided to develop themselves.

Chen Xiufeng, chairman of Xingyuan Material Technology Co., Ltd. said: "Before we did, China had no industry and no corresponding talents. Don't look at it as a simple layer of film, but its scientific name is molecular sieve, Kong Kong’s The size should be uniform, the distribution of the holes should be uniform, and it must also ensure its strength. These are very precise and difficult to control. At that time, we cooperated with Sichuan University. Study this diaphragm, so we are together with Professor Xiang Ming to form our R & D team. "

It took 3 years, and the R & D team finally created the first stable lithium battery diaphragm. However, in this field that was monopolized by foreign companies at that time, as a newcomer of a fledgling, it was not easy to get the recognition of the industry.

Liao Zhenbo, the manager of Xingyuan Material Technology Co., Ltd., said: "At that time, we sent the sample to the largest lithium battery company in China. Did he say that this product was produced? Are these parameter technical indicators real and reliable? We please please please ask? He went to our R & D factory to visit to see how we made the product and how our development process was carried out. After two months of trial, this company found that the reliability and performance indicators of our products were no less than that Imported products, so we opened this customer. "

With the excellent performance of the product, Xingyuan's material has obtained more and more industry recognition, but in order to stand firmly and expand the market, we must continue to develop and build their own unique skills, and continue to surpass some key indicators. Right now, the "ultra -high -breaking film temperature" that is in terms of Xingyuan material is a very critical technology that improves this performance and can reduce the occurrence of battery short circuit and combustion, which is of great significance to the safety performance of lithium batteries.

At present, the breaking film temperature of the septum product on the market is generally about 130 ° C to 150 ° C, and the research and testing of Xingyuan materials has been increased to 200 ° C or even higher. Safety performance. Continuously surpass and break through themselves. With this strength, Xingyuan material has continued to increase investment in the scale of research and development and production. From 10 years ago, the first export of domestic septum membranes was achieved, and it has grown into the largest export company in the field of lithium battery diaphragm in China.

Innovation is the logical starting point of enterprise development. These two invisible champion companies are fighting with a stream of hard work, one after another to overcome the "card neck" technology, and realize the leap from follow -up to running and leading. not open. The reason why China's lithium battery industry can develop happily, and even docking in international first -class car companies to achieve discourse breakouts in the international market is because of the support of a group of invisible champions. Relatively stable supply chain system. Whether for the industrial ecological prosperity, or to hold key core technologies in our hands and ensure the security of the supply chain, we need to have more such invisible champions.

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