Graphene Lithium Battery Technology Achieves Another Breakthrough

There are media reports that a graphene lithium battery product called "Kene King" was released in Beijing. The report said that "the product's landing has opened up the age of graphene in the energy field, and proved that the carbon source sink graphene The success of the two core skills of preparation and graphene-coated lithium battery positive and negative materials has completely opened up the application space of graphene in consumer electronics lithium batteries, power lithium batteries and lithium batteries in the field of energy storage."

Graphene lithium battery is a new concept that has been repeatedly hyped by the media. It has set off one after another in the stock market, which has affected the nerves of many people and the interests of many companies. Relevant scientific and technological elites all over the world are discussing and exploring the application of graphene, and scientific and technological achievements and patented skills are constantly presented, especially in the use of lithium batteries. There are more virtual but less real. So far, no product has been sold in the market. . At least so far, the breakthrough of the above-mentioned graphene technology products allows us to see with our own eyes a real product in which graphene is applied to lithium batteries. It is hoped that the graphene lithium battery we see is not a sample to prove scientific research results, but a high-tech product that can be launched soon to shock the world.

From the picture of the released product, it can be seen that the new product is a power product with a volume equivalent to a general lithium battery power bank (4800mAh). There are many portable power bank products in the market with a capacity of 4800 mAh. Bao should be the smaller one. How can a power product see the prospects of its application in electric cars? If the product is the same as the general lithium battery power product, using two 18650 batteries with a capacity of 2400mAh (for the time being only this can be guessed), then its mass production should be very simple to complete, and the product will not be used on electric cars after being assembled. What a big problem.

As we know, for a 2400mAh 18650 battery, its volume capacity density can reach more than 500 watt-hours per liter, and the component capacity density can reach more than 180 watt-hours per kilogram, which is similar to Panasonic used in Tesla’s high-end electric car products. Compared with the 18650 battery with a capacity of 3100mAh, the capacity is slightly lower, but the other three policies far exceed it. Compared with the lithium iron phosphate battery used in BYD electric cars, the unit component energy density is higher. Of course, the single battery is grouped. I don’t know if I can reach the present. Whether the cost of this other power supply product can do the same as the existing power bank, it is not clear at the time of listing, and the price is also unknown. If it is not the standard packaging mode of two 18650 batteries, how to apply them to electric cars, the battery policy is not clear, and it is impossible to talk about it now. In short, mass production and listing of the battery is the key. Good things can stand the test of the market and become the gospel of enterprises and consumers.

According to reports, compared with ordinary batteries, the lithium-ion battery products can not only complete the rapid charge and discharge within 15 minutes under the condition of 5C, but also the graphene lithium battery can be operated at -30~80℃, and the cycle life is up to About 3500 times. Through the on-site test of the press conference, the charging time of "King" is 15 minutes, which is 1/24 of the general charging products. The three policies of King En's products were indeed important policies that electric cars needed to deal with urgently at the time. The only one to be tested at the press conference was fast charging. The high and low temperature environment charge and discharge capacity and the cycle life of 3,500 times were not available at the scene. Demonstrated, the fast charging effect is indeed convincing. You must know that the 2A chargers used on our mobile phone's mobile power supply are very hot when charging. This 4800 mAh lithium battery power supply product uses 5C for charging. When it reaches more than 20 amperes, at least I haven't seen how hot it is. Strictly speaking, 15 minutes of charging only achieves 4C conditions, 5C should be 12 minutes. 10C should reach 6 minutes. For electric cars, it is misleading to pursue a 6-minute full charge. Why do you have to compare the refueling time with gasoline cars. If it's time to recharge after parking, do you think it is necessary to compare the refueling time with gasoline cars? Of course, for taxis and buses, the charging time should be as short as possible. Customers will wait for you to charge for half an hour. No one is willing to wait. This is an exception.

　　Compared with the fast charging of lithium batteries for electric cars, people have a higher expectation that graphene can increase the capacity density of lithium batteries. In 2015, a report on the successful development of a graphene super battery in Spain claimed that a full charge in 8 minutes can allow an electric car to travel 1,000 kilometers with an energy density of up to five to six hundred watt-hours per kilogram. So far, the true face of the product has not been seen. Not to mention 8 minutes, it is better to run 1000 kilometers with full power for more time! The Chinese are more pragmatic. In our country’s 13th Five-Year Plan, the energy density of lithium batteries is expected to be greater than 300 watt-hours per kilogram by 2020, and the battery cost is expected to be less than 0.6 yuan per watt-hour. Judging from the published data of well-known domestic lithium battery companies, such a policy can be accomplished. Now you can see electric cars that can travel 400 kilometers on a single charge, and by then, you can see electric cars that can travel 800 kilometers on a single charge.

　　 The long cycle life of the graphene lithium battery also brings expectations to the energy storage application of electric cars. If it is fully charged in 30 minutes, its cycle life will be more than 3,500 times. I really hope that it can be used on electric cars as soon as possible, so that electric cars with energy storage functions can run all over the motherland, so that the cost of using electric cars is getting lower and lower, making electric cars more widespread, and making parking charging more convenient anytime, anywhere. Convenient, making mobile power stations and energy storage functions become standard equipment for electric cars, making charging and storing electric cars and power grids autonomous, intelligent, and unmanned methods to handle harmoniously independently. This is precisely from the graphene lithium battery In terms of the product's ultra-high cycle life function, we most expect to see the application prospects.