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The automotive industry is about to undergo major changes, fuel vehicles will gradually withdraw from the historical stage, new energy vehicles will become the main force, new energy vehicles among the electric vehicles are all over the world car companies are trying to break through the commanding heights. However, the battery research and development of electric vehicles has always been a bottleneck restricting the blowout development of electric vehicles.
At present, the number of electric vehicles in China's automobile market is about to exceed 5 million. Now China's basic first-tier city buses are using electricity as the basic power, all use lithium titanate batteries, this battery has the advantages of high safety performance, fast charging speed and long battery life, but the battery capacity is too small, the mileage is too short, and the capacity of this battery is only about half of that of lithium battery. Therefore, lithium titanate batteries can only be used in special vehicles such as buses, and it is very difficult to popularize them to private cars with not too many mileage.
Sodium-ion batteries, which have light weight and low cost, cannot compete with lithium batteries in terms of battery density. Sodium-ion batteries are generally equipped in low-speed vehicles, and cannot be used in high-speed vehicles at all. Chen Liquan, the founder of China's lithium battery industry and an 80-year-old academician of the Chinese Academy of Engineering, led the team to develop a new battery material, nano-silicon anode material, which will greatly improve the performance of lithium batteries, directly double the mileage of the car, and will detonate the blowout growth in the field of new energy vehicles and electric vehicles.
Silicon is a very common chemical raw material, the main component of the sand is silica, but to refine silicon into anode materials, it can be completed in the laboratory, and to make tons of silicon anode materials, it requires a lot of testing and R&D investment. Silicon anode material is the best way to improve the capacity of lithium battery battery, and the solid-state battery formed on the basis of this technology is the best solution to solve the safety problem and recycling problem of lithium battery. Professor Li Hong led the team in Liyang, Jiangsu Province, and after more than 20 years of technical research, it has been able to achieve an annual production capacity of 2,000 tons of silicon anode materials for lithium-ion batteries.
Li Hong's team applied solid-state lithium-ion batteries to drone tests, and the result was a 20% increase in the drone's range. Lithium-ion all-solid-state batteries have become an inevitable choice for the development of new energy vehicles.
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When it comes to new energy vehicles, I think everyone understands, new energy vehicles are also the direction of future development, because China has been advocating environmental protection, and the first job of environmental protection is to make cars achieve zero emissions, because China's car ownership is particularly large, the exhaust emissions of a car do not matter, the exhaust emissions of hundreds of millions of cars in the country at the same time cause great harm to the environment, and new energy vehicles can solve this problem, because new energy vehicles use electric energy as power. Therefore, new energy vehicles are truly zero emission, then we all know that new energy vehicles need to be installed with lithium batteries for charging, and with the current technology, lithium batteries are not very good in terms of life and power storage, and the mileage of new energy vehicles is also the biggest problem, many people do not like to buy new energy vehicles because of battery life, but this situation will change from now on, because according to CCTV financial reports, Chen Liquan, an academician of the Chinese Academy of Engineering, led the team to develop a new type of nano silicon lithium batteryThe advent of this new type of lithium battery means that we have taken another big step forward on the road to popularizing new energy vehicles.
The storage capacity of the new nano silicon lithium battery is 5 times that of the previous traditional graphite lithium battery, which means that the battery life problem will be solved after the use of this new lithium battery in new energy vehicles in the futureAfter being fully charged, the distance that can be driven will be 5 times that of the past, and we all know that the average mileage of new energy vehicles is about 200 kilometers, and if you turn on the air conditioner, it may only be more than 100 kilometersAfter using this new nano-silicon lithium battery, the cruising range of new energy vehicles will be as high as thousands of kilometers, which is more than the cruising range of fuel vehicles, so that people can accept new energy vehicles.
And the charging speed of the new nano silicon lithium battery is also very fast, as mentioned in the news, the new nano silicon lithium battery is charged for 3 minutes, and the power is charged from 33% to more than 60%, which also solves the problem that people have too long waiting time for chargingMoreover, the safety of the new nano-silicon lithium battery is also higher, and the new nano-silicon lithium battery does not burn or smoke in the experiment, regardless of dropping, acupuncture or cutting.
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It means that another story is told.
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The new nano battery has come out, which means that my previous battery may have to be replaced, and the new battery will be more durable and environmentally friendly than the old battery.
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Recently, the Yinlong New Energy Energy Storage System Research Institute in Zhuhai, Guangdong Province, and China's top lithium battery R&D team have successfully developed a new nano-silicon lithium battery. Chen Liquan, the 80-year-old first person in China's lithium battery, led his team to develop a new type of battery material. Chen Liquan said that the success of the research and development of new nano-silicon lithium batteries has also broken the problem of energy consumption loss of charging vehicles in low-temperature environments.
After many tests, the new nano-silicon lithium battery can still be used normally in an environment of minus 50 degrees: "For the future development direction of power batteries and energy storage batteries, we still need to consider the safety and cost of batteries." Because of these two reasons, it is still the core of technical research such as power batteries and energy storage batteries."
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Curtain track is a curtain accessory used to hang curtains so that the curtains can be opened and closed, and the curtain fabric can be beautiful. There are many varieties, divided into two series of open rail and dark rail, open rail has wooden rods, aluminum alloy rods, steel pipe rods, iron rods, plastic steel rods and so on, the common form is art rods. The dark track has:
Nano tracks, aluminum alloy tracks, and silent tracks, the texture of plastic steel, iron, copper, wood, aluminum alloy and other materials, general curtain stores have, ** depends on what material you choose.
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The nanometer is a unit of length, in the International System of Units, which is the micron (1 nanometer and 10 meters of minus 9 meters and 4 times the size of an atom and the length of a bacterium).
Nowadays, the microscopic scale of many materials is measured in nanometers (most semiconductive process standards are expressed in nanometers), and nanoscale is a particle between 1 nm and 100 nm).
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Nanometer is a nanometer, which is a unit of measurement for length, and the SI symbol is nm. The unit of length, like the centimeter, decimeter, and meter, is the unit of measurement of length. It is equivalent to 4 times the size of an atom and is smaller than the length of a single bacterium.
A single bacterial microorganism is not visible to the naked eye (the picture below shows the cells under a microscope), and the diameter of the microscope is about 5 microns, or 5,000 nanometers.
At present, the microscopic scale of many materials is mostly measured in nanometers, for example, most semiconductor process standards are expressed in nanometers. As of February 2017, the latest ** processor, also known as (CPU, Central Processing Unit), is manufactured at 14nm.
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A nanometer is a unit of measurement for length. Also called nanometers, the SI symbol is nanometer = 10 -9 meters, and the unit of length is the same as the centimeter, decimeter and meter, which is the unit of measurement of length. It is equivalent to 4 times the size of an atom and much smaller than the length of a single bacterium.
The international common name is nanometer, abbreviated as nm.
Nanometers, like centimeters, decimeters, and meters, are units of measurement of length, one nanometer is equal to one billionth of a meter, and placing a nanometer object on a ping-pong ball is like a ping-pong ball on the earth.
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A nanometer is a unit of length. 1 nanometer is equal to one million millimeters.
Nanometer (nm), is the nanometer translation name, is the unit of measurement of length, the SI symbol is nanometer = 10 -9 meters, the unit of length is the same as centimeters, decimeters and meters, is the unit of measurement of length. It is equivalent to 4 times the size of an atom and much smaller than the length of a single bacterium. The international common name is nanometer, abbreviated as nm.
In the 80s of the 20th century, nanotechnology was introduced. It is a science that studies the interactions, composition, properties, and manufacturing methods of matter at the nanoscale, from atoms and molecules to the submicron scale. The nanoscale covers everything from proteins and DNA to organelles, providing life scientists with a steady stream of inspiration and a wide range of creative possibilities.
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A unit of length, 1 nanometer is equal to one million millimeters. When a substance is as small as the nanoscale, it may exhibit characteristics that surpass or even differ from large-scale matter in electronics, optics, mechanics, etc.
As one of the three emerging technologies of the 21st century, nanotechnology is developing rapidly and has brought many transformative impacts to human society and daily life.
At the nanoscale, objects that are originally dull in color will appear colorful at the nanoscale, thin sheets as light as cicada's wings will become tough as steel, excellent conductors will become insulators, and ordinary materials will generate electricity and glow.
Nanotechnology, also known as nanotechnology, is a technique that studies the properties and applications of materials with structural dimensions in the nanometer to 100 nanometer range. At present, the research and application of nanotechnology is mainly in materials and preparation, microelectronics and computer technology, medicine and health, aerospace and aviation, environment and energy, biotechnology and agricultural products.
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A nanometer is one billionth of a meter. Nanotechnology is a new technology that studies the laws and characteristics of the motion of electrons, atoms, and molecules at the nanometer scale. In the process of studying the composition of matter, scientists have found that a few or dozens of countable atoms or molecules isolated at the nanoscale significantly exhibit many new properties, and the technology of using these properties to manufacture devices with specific functions is called nanotechnology.
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A nanometer is just a unit of length, 1 micron is one thousandth of a millimeter, and 1 nanometer is equal to one thousandth of a micron, which is equivalent to one hundred-thousandth of a human hair, without any technical properties.
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Nano is one.
units of length, symbolized by nm
1nm = Nanoscience technology is the science and technology within the nanoscale, the object of study is a small pile of molecules or a single atom, molecule.
Nanotechnology has applications in electronics and communications, medicine, and manufacturing.
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An overview of nanomaterials technology.
Nanoscale structural materials, referred to as nanomaterials, refer to their grain sizes between 1 nanometer and 100 nanometers. Because its size is close to the wavelength of light, and it has the special effect of a large surface, the properties it exhibits, such as melting point, magnetism, optical, thermal, electrical conductivity, etc., are often different from the properties exhibited by the substance in its overall state.
The broad scope of nanotechnology can include nanomaterial technology and nanofabrication technology, nanometer measurement technology, nano application technology, etc. Among them, nanomaterial technology focuses on material production (ultrafine powder, coating, etc.), performance testing technology (chemical composition, microstructure, surface morphology, physical, chemical, electrical, magnetic, thermal and optical properties, etc.). Nanofabrication technology includes precision machining technology (energy beam processing, etc.) and scanning probe technology.
When the size of powder particles drops from 10 microns to 10 nanometers, the particle size changes to 1000 times, but when converted into volume, it will be 109 times larger, so there will be obvious differences in the behavior of the two.
The reason why nanoparticles differ from bulk matter is that their surface area is relatively large, that is, the surface of ultrafine particles is covered with a step-like structure, which represents unstable atoms with high surface energy. These atoms are highly susceptible to adsorption bonds with foreign atoms, and at the same time, they provide a large surface of active atoms due to the reduction in particle size.
As far as the melting point is concerned, the nano powder has a high surface energy due to the small number of atoms in each particle and the unstable state of the surface atoms, so that the amplitude of the surface lattice vibration is larger, so it has a higher surface energy, resulting in the unique thermal properties of ultrafine particles, that is, the melting point decreases, and the nano powder will be easier to sinter at a lower temperature than the traditional powder, and become a good sintering promotion material.
When the size of the particle is so small that it is impossible to distinguish its magnetic region, it forms a magnetic substance with a single magnetic region. Therefore, magnetic materials become excellent magnetic materials when made into ultrafine particles or thin films.
The particle size of the nanoparticles (10 nm to 100 nm) is smaller than the length of the light wave, so they will have complex interactions with the incident light. Under the appropriate evaporative deposition conditions, ultrafine particles of ferrous metals that easily absorb light, called metallic black, can be obtained, which is in strong contrast with the highly reflective glossy surface of the metal when it is formed in vacuum coating. Due to their large light absorption rate, nanomaterials can be applied to infrared sensor materials.
Nanotechnology is still in the embryonic stage in all countries in the world, and a few countries such as the United States, Japan, and Germany have begun to take shape, but they are still being studied, and the emergence of new theories and technologies is still in the ascendant. China has made efforts to catch up with the level of advanced countries, and the research team is also growing day by day. (China Building Materials News Wang Yifo).
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