日本におけるリチウム電池研究の新たな進展 -リチウムイオン電池装置
2022年10月31日
According to the Japanese Economic News on December 27, the development of lithium-ion battery technology, which can travel 500 kilometers from Tokyo to Osaka after a single charge, is becoming increasingly active in Japan. The technology of ponding chemical industry has already got the clue to make a breakthrough, and Asahi Huacheng is approaching. The existing electrode can be used, and it is expected to be practical in the first half of the 1920s. The Ministry of Economy, Trade and Industry of Japan will support the technological development to give full play to the battery performance. In the world, the trend of switching to pure electric vehicles (EV) is accelerating. If the endurance distance of the subject is greatly extended, the era of lithium ion batteries as the leading role may continue.(Lithium - Ion Battery Equipment)
If it can run 500 kilometers under full charge, it will match the performance of gasoline vehicles. The Ministry of Economy, Trade and Industry of Japan and others believed that this was one of the conditions for the popularization of pure electric vehicles and proposed the goal to be achieved by 2030. China, where pure electric vehicles are rapidly popularized, has ended subsidies for models with a range of less than 150 kilometers and increased subsidies for models with a long range.
Lithium ion batteries were commercialized in 1991 and used in notebook computers and video cameras. In 2009, it was used for mass production pure electric vehicles. The driving distance is about 200km when fully charged. It is generally believed that the technology at the beginning of 2010 was difficult to reach 500 km, and it will be replaced by new generation batteries such as all solid state batteries by 2030.
The development of new generation battery is increasingly active in the world, but there are many technical topics. On the other hand, the technological development of lithium-ion batteries has made progress, and the 500km breakthrough is increasingly possible. Researchers and others predicted that "lithium ion batteries can still be used for about 10 years".
Lithium ion batteries generate electricity and charge by moving lithium ions between positive and negative electrodes. To increase the capacity of the battery, it is necessary to increase the ions stored in the electrode or reduce the internal resistance to make it easier for electrons to pass through.
Hydroponding chemistry is a technology developed for positive electrode, and efforts are made on the structure of added carbon materials to make the electron flow easier. Enlarge the passage of electrons in the positive electrode, and the electron flow is more smooth, about 10 times as much as before. In addition to obtaining a large amount of current generated, the electrode is not easy to be damaged and its durability is improved.
The positive electrode will be thickened to obtain more lithium ions. In the experiment, the capacity of the battery is increased by about 30%. The driving range can be improved from the current 400km to more than 500km. It is planned to be sold as a spare part by 2021.
Asahi Kasei increases the capacity by about 20% by mixing silicon oxide into the negative electrode. Adding silicon materials to the negative electrode of carbon materials makes it easier to store lithium ions, which can increase the capacity. However, there is a problem that some ions cannot be released when they are captured. By pre injecting ions into the negative electrode, the captured part will not be active, and the lithium ion will be obtained and released smoothly. Asahi Huacheng strives to be practical in a few years.
In addition, research on the use of electrode materials that did not exist before is also advancing. Professor Naomi Usunai of Yokohama National University cooperated with Panasonic to develop a positive electrode mixed with fluorine. Not only metal, but also oxygen can be used for electron flow in the electrode, with a capacity of 2 times. Sumitomo Chemical promoted the development of aluminum negative electrode and proposed the goal of increasing the capacity to 2.5 times.
From 2019, the Ministry of Economy, Industry and Technology of Japan will develop technologies that make it possible to completely use up lithium ion batteries. In order to prevent fire accidents, the battery is used at a capacity lower than the upper limit. It will support the development of sensors that can accurately detect the residual electricity, and increase the usable amount. Include 250 million yen in the 2019 budget, and strive to achieve practicality by 2023.
If it can run 500 kilometers under full charge, it will match the performance of gasoline vehicles. The Ministry of Economy, Trade and Industry of Japan and others believed that this was one of the conditions for the popularization of pure electric vehicles and proposed the goal to be achieved by 2030. China, where pure electric vehicles are rapidly popularized, has ended subsidies for models with a range of less than 150 kilometers and increased subsidies for models with a long range.
Lithium ion batteries were commercialized in 1991 and used in notebook computers and video cameras. In 2009, it was used for mass production pure electric vehicles. The driving distance is about 200km when fully charged. It is generally believed that the technology at the beginning of 2010 was difficult to reach 500 km, and it will be replaced by new generation batteries such as all solid state batteries by 2030.
The development of new generation battery is increasingly active in the world, but there are many technical topics. On the other hand, the technological development of lithium-ion batteries has made progress, and the 500km breakthrough is increasingly possible. Researchers and others predicted that "lithium ion batteries can still be used for about 10 years".
Lithium ion batteries generate electricity and charge by moving lithium ions between positive and negative electrodes. To increase the capacity of the battery, it is necessary to increase the ions stored in the electrode or reduce the internal resistance to make it easier for electrons to pass through.
Hydroponding chemistry is a technology developed for positive electrode, and efforts are made on the structure of added carbon materials to make the electron flow easier. Enlarge the passage of electrons in the positive electrode, and the electron flow is more smooth, about 10 times as much as before. In addition to obtaining a large amount of current generated, the electrode is not easy to be damaged and its durability is improved.
The positive electrode will be thickened to obtain more lithium ions. In the experiment, the capacity of the battery is increased by about 30%. The driving range can be improved from the current 400km to more than 500km. It is planned to be sold as a spare part by 2021.
Asahi Kasei increases the capacity by about 20% by mixing silicon oxide into the negative electrode. Adding silicon materials to the negative electrode of carbon materials makes it easier to store lithium ions, which can increase the capacity. However, there is a problem that some ions cannot be released when they are captured. By pre injecting ions into the negative electrode, the captured part will not be active, and the lithium ion will be obtained and released smoothly. Asahi Huacheng strives to be practical in a few years.
In addition, research on the use of electrode materials that did not exist before is also advancing. Professor Naomi Usunai of Yokohama National University cooperated with Panasonic to develop a positive electrode mixed with fluorine. Not only metal, but also oxygen can be used for electron flow in the electrode, with a capacity of 2 times. Sumitomo Chemical promoted the development of aluminum negative electrode and proposed the goal of increasing the capacity to 2.5 times.
From 2019, the Ministry of Economy, Industry and Technology of Japan will develop technologies that make it possible to completely use up lithium ion batteries. In order to prevent fire accidents, the battery is used at a capacity lower than the upper limit. It will support the development of sensors that can accurately detect the residual electricity, and increase the usable amount. Include 250 million yen in the 2019 budget, and strive to achieve practicality by 2023.
