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Battery technology requires constant innovation

One is that CATL released its third-generation CTP (Cell To Pack) technology, claiming that a new product called “Kirin Battery” will be mass-produced in 2023. It is reported that this battery has “a new high level of system integration in the world”, and some people think it is “the ultimate solution for new energy vehicles”.

The other is that the Japanese company Eamex claims to have developed a high-capacity capacitor, which can greatly shorten the charging time if used in pure electric vehicles, “charging can be completed in as little as 1 minute.”

The most eye-catching point of CTP technology is its high energy efficiency ratio. According to the official data of CATL, unlike previous car technologies that all use battery packs, this battery adopts chassis packaging, integrated frame, and other technologies to maximize the use of space and increase battery density, thereby “generating extraordinary energy efficiency.” Compare”. Reflected in the data, this battery has a volume utilization rate of 72%, an energy density of 255Wh/kg, and a battery life of 1,000 kilometers. It can also support a quick hot start in 5 minutes and a fast charge of 80% in 10 minutes.

For this new technology of the CATL era, many people expressed their appreciation and support. For example, Li Xiang, the founder of Ideal Auto, expressed his expectation for the emergence of new batteries and posted a comment “See you next year” on Weibo. However, some people poured cold water on it, thinking that the CTP technology of the CATL era is not innovative. Tesla, BYD, and other car companies have already carried out advanced research and development and practice in this area. Moreover, like the pioneers, the CTP technology of the CATL era also faces some flaws that cannot be fundamentally solved. For example, although the integrated design of the battery, chassis, and frame can improve space utilization, the cost of doing so is that the battery cannot be replaced, and it also means high maintenance costs. Some people even pointed out that this so-called new technology only innovated the physical level of the battery pack. By putting the battery into the frame to increase the number of batteries to achieve longer battery life, the battery is still the original liquid battery and has not touched a semi-solid or solid state. chemical level of the battery.

In the eyes of some in the industry, there is little hope of achieving a change in battery chemistry in the next few years. It has been 31 years since the first commercialization of lithium-ion batteries in 1991. During this period, technological developments in various industries have advanced by leaps and bounds, but technological breakthroughs in batteries have been few and far between. The reason for this is that in principle, whether it is a lithium battery or a nickel-metal hydride battery, chemical reactions are used to realize the mutual conversion between electrical energy and chemical energy. Under the premise of a certain battery volume, there is a limit to the energy conversion in the chemical reaction process, and the current human battery technology is approaching the energy storage limit of the battery. The improvement of battery technology over the years is a fuss about electrode materials. For example, the graphene battery that is often heard today is still a lithium battery in essence. The use of graphene materials can indeed improve the charging speed and charge-discharge efficiency, but The improvement effect of battery energy density is limited.

Affected by the “limit theory”, battery research has begun to turn to solid-state batteries in recent years. Solid-state lithium battery technology uses glassy compounds made of lithium and sodium (mainly organic materials and inorganic ceramic materials) as conductive substances to replace the electrolyte of previous lithium batteries and greatly increase the energy density of lithium batteries. The industry generally believes that all-solid-state battery technology is the only way for batteries to be miniaturized and thinned. However, although many scientific research institutions and enterprises have made efforts in the field of solid-state batteries, the results have been achieved, and mature technologies that can be commercialized have not yet appeared.

In this context, Eamex’s announcement of the development of high-capacity capacitors will make people’s eyes shine-this may be a new direction. According to the company, the working principle of the capacitor is different from that of traditional batteries based on chemical reactions. It stores electricity by absorbing electrons on the surface of the electrodes. It has the advantages of fast charging and discharging and is not easy to deteriorate. The capacitor developed this time replaces the positive electrode of the lithium-ion battery with polyaniline, a polymer compound with special conductivity. The trial product can be charged in 1 to 3 minutes and can be repeatedly charged and discharged more than 30,000 times. In addition, because the materials do not use rare metals nickel and cobalt, circuits for controlling safety can also be easily realized, and its manufacturing cost is reduced by half.

Of course, some people have questioned this high-capacity capacitor: fast charging speed and many times of charging and discharging are indeed its advantages, but based on Coulomb’s law, capacitors have a natural shortcoming – low energy storage density, even with extremely high-intensity capacitors materials, it is also difficult to increase the energy storage density of capacitors. Simply put, the larger the capacitor capacity, the larger the volume. In this way, this road seems to be back to the “dead end” of lithium batteries.

Some people say that material science is a kind of “God’s science”, which is unpredictable. If you want to achieve a breakthrough in battery technology, you can only continue to find new materials and conduct experiments. Don’t expect a big breakthrough in a short period, and don’t easily believe those so-called “breakthroughs”. But this is not to make people pessimistic but to teach people to calm down and do things. As long as we do research and development step by step in a down-to-earth manner, we can always find a direction and make progress.

In recent years, with the increasing awareness of environmental protection of human beings, more and more people pay attention to the protection of the environment. After working in the new energy industry, I can understand why the country wants to move factories to Vietnam, Laos, India, and other places.

1. To develop in harmony with the environment, the country must pay attention to the environment, such as talking about measures to neutralize the carbon peak.

2. People’s awareness of environmental protection has been continuously strengthened.

3. For the long-term coexistence of the earth with us.

4. Realizing sustainable development is the eternal theme of human beings.

Factory relocation workers will face employment problems, but if they do not relocate, it will aggravate environmental pollution. It is precise because of this that we should continue to reform and innovate, shift from Made in China to Created in China, develop new industries, and produce irreplaceable products. Batteries are in line with the theme of the development of the times.

In 2023, Foxconn factories withdrawn from the Chinese stage, and they have been transferred to Vietnam, Laos, India, and other countries. The development of these countries is still relatively backward. In this way, their employment pressure can be greatly reduced, and at the same time, it can promote the development and upgrading of industries. It was the earliest industry in Britain, and the first batch of countries that developed by production were also countries that were moving toward capitalism. Followed by the United States, they are also vigorously producing, and later became rich and became a capitalist country. Then came the Four Asian Tigers, which also took the path traveled by the previous two countries, and also moved towards prosperity. The next step is China’s production, and some people want to realize wealth and freedom by doing business on their own. China’s manufacturing has continued for a long time, but now the country is implementing a factory relocation order, and products that do not meet national standards cannot be manufactured. The production of low-value products is prohibited, and the Environmental Protection Bureau is particularly strict. Why? Isn’t it well-developed?

Reason: The production pollutes the environment too much, and it requires manual labor, which does not require brains and has no technical content.

Developing is the path every country must take. How can we get rich?

1. Comply with the country’s development strategy, don’t make in China, but create in China. Only the things created are more valuable, and anyone can replace the step-by-step products.

2. The country must continuously encourage innovation. In the long run, factory relocation is forcing every Chinese person to find a way to innovate. To engage in research and development, we must exert our talents unlimitedly to achieve sustainable development with the environment. Among them, there will be many workers who are unemployed and don’t know what to do, but it depends on what people think and how they do it.

3. New energy products will quickly become popular, which is a great opportunity for personal and national development. Batteries, household energy storage, and industrial energy storage have become popular in European and American countries, and have already occupied the dominant market.

Therefore, we must continue to innovate products with the help of national policies and forces, realize harmonious development with the environment, and continue to work hard to change Made in China into Created in China. Only in this way can we benefit our future generations.

If you want to know more about power batteries, home energy storage systems, and industrial energy storage systems, please feel free to contact me. It is a great honor to help you.



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