As early as more than a decade ago, most of the world's high-end materials used in the manufacture of high-end and low-end lithium batteries-the separator-were mostly occupied by companies in the United States and Japan. Therefore, the monopolized battery separator market, the international price each year, has gradually exceeded the mark. According to statistics, The huge profits made traditional giant companies manufacture Technology is strictly closed. Research and development in the field of lithium batteries has always been the focus of scientists in various countries. This year's Nobel Prize in Chemistry was embraced by scientists from the United States and Japan.
US and Japanese companies account for nearly 90% of the global battery separator market 10 Years Ago
The separator is the core material that affects the overall performance of the lithium-ion battery, and also the key to the lithium-ion battery's ability to effectively avoid short circuits. Previously, the production process of diaphragms was basically controlled by American and Japanese companies. In 2008, the United States and Japan already occupied 90% of the global diaphragm market. If Chinese companies want to import from the United States and Japan, they not only need to undergo strict scrutiny, but at the same time, delivery time and after-sales are not the best guarantee. It can be said that the United States and Japan had absolute right to speak on lithium battery separators at that time. Previously, China had made breakthroughs in the development of positive and negative electrode materials and electrolytes in the production of lithium batteries, but has not made much progress in the localization of separators.
The microporous separator used in lithium batteries is mainly made of polyethylene or polypropylene with a cost of 21,000 tons. Its role is to separate the positive and negative poles of the battery, which has a decisive effect on battery capacity and other properties. The market price of microporous membranes is generally 3 million a ton, and the operable profit among them has attracted many companies to chase. Under the circumstances of zero foundation and foreign technology monopoly, the star source founded by Chen Xiufeng chose a new path to start from the polymer field. With the help of the research team of Sichuan University, in 2008, the first volume of China`s diaphragm was led by Chen Xiufeng. Born next. Backward waves of the Yangtze River pushed forward, and China's Enjie Co., Ltd. also achieved some results in the research of wet separators for high-end batteries.
China's current share of international lithium battery separators has risen over 40%
At present, there is still a certain gap in the quality of Chinese-made separators compared to the United States and Japan. However, Chinese-made separators have the advantage of good quality and low prices. Now domestic wet-fabric separators require only one piece per square meter and the import price is only five pieces. A level is also 50 times straight down. So when Xingyuan first put domestically produced diaphragms into the market, AVIC Lithium and BYD chose to place orders. At the same time, with the annual breakthrough of 468 million flat wet-process separators of EJ, China has now occupied about 33% of the market share in the international lithium battery separator market. Unsatisfied with this, EJ has set the goal of achieving world-class diaphragm quality by 2020. And now the booming development of China-made diaphragms will inevitably give China more space for bargaining imports of high-quality diaphragms.
Two Chinese Manufacturers are pioneers in the production of lithium battery separators
Lithium batteries have been around since the 1970s. Two American scientists, Wittingham and Gudinaugh, played a huge role in the early research of lithium batteries. Japanese scientist Akira Yoshino made it possible for lithium batteries to go from pure lithium to safety The more lithium-ion era. The first commercialized lithium-ion battery was Sony Corporation of Japan. Now China Diaphragm has achieved full domestic production, and this is the credit of two private enterprises, XY and EJ. Among them, XY has the assistance of the university's scientific research team, and EJ's mass production of wet process diaphragms also has the credit for the polymer polyethylene materials developed by Yangzi Petrochemical. In short, the breakthrough of China's lithium battery materials is the common contribution of countless companies and scientific researchers.