At present, most of the so-called graphene batteries on the market are made by adding some graphene to the battery such as lithium battery, and more as a conductive agent to improve the fast charge performance of the battery. The default name in the battery industry is "Graphite-based batteries", not "graphene batteries."
Although there is no clear definition of graphene batteries in the academic world, with reference to the definition of “lithium batteryâ€, graphene batteries must use graphene as the main electrode material. Now all kinds of materials used in lithium batteries are tens of thousands of tens of thousands of tons. Think about the price of graphene comparable to gold. Who really used electrode materials?
Secondly, although graphene has helped the battery capacity increase, it is not as big as imagined. The battery with graphene as the negative electrode has theoretically the capacity of twice as much as the graphite negative electrode. The significance of the steamed bread is far greater than the actual utility. In fact, At present, major battery manufacturers have begun to use silicon negative electrodes (such as Panasonic's 4AH18650).
A researcher at Tsinghua Energy Internet also said that the high specific surface area and other properties of graphene itself are incompatible with the current lithium-ion battery industry technology system, and the hope of complete replacement is very slim.
Application of graphene in automotive batteriesChina also has unique advantages in graphene research. From the production point of view, graphite, which is a raw material for the production of alkenes, is abundant in energy storage in China and has low prices. In addition, Chinese scientists have successfully produced the first 15-inch single-layer graphene in China by chemical vapor deposition, and successfully applied the graphene transparent electrode to the resistive touch screen to prepare a 7-inch graphene touch screen with certain technology. basis.
The success of the experimental phase of the new graphene battery will undoubtedly become a new development point of the battery industry. After the successful development of graphene energy storage equipment, if it can be mass-produced, it will bring new changes to the battery industry and even the electric vehicle industry.
Graphene is a kind of lithium ion battery anode material with promising applications. It has been applied to the research of automotive batteries. A Spanish company, Graphenano, which produces graphene on an industrial scale, cooperated with the University of Corvado in Spain to study the first graphene polymer material. The battery, which has three times the storage capacity of the best products in the market, can use the battery to provide electric power for up to 1000 kilometers, and its charging time is less than 8 minutes. The cost of a graphene polymer battery will be 77% lower than that of a lithium battery and half the weight of a conventional battery.
In the first half of 2015, Shandong Yuhuang New Energy Technology Co., Ltd. built the first new battery production line. The biggest feature of this fast-filled lithium-electric battery is the addition of graphene to minimize the internal resistance of the battery. It effectively solves the technical bottleneck that hinders the rapid charging of lithium battery products, and greatly extends battery life. It has been put into production, and it is mainly engaged in the logistics and sightseeing car market. It is a “super†battery with graphene. It can be charged to the maximum capacity in 30 minutes. The cruising range of new energy vehicles is up to 400 kilometers, and the battery weight is greatly reduced.
What are the manufacturers of graphene battery cars?At the 2017 Neiva Auto Show, a concept car called the Right Road H600 attracted a lot of attention. It adopts all-aluminum chassis with front and rear weight ratio of 52:48, maximum power of 816 horsepower, 2.9 seconds of breaking 100, speed of 250km/h, and official data lasting 1000km. The power system using the "micro turbine generator range extender + super battery" is expected to be mass-produced and put on the market by 2020.
"The right way" is where the brand comes out, listening to the name is to teach people to behave! In fact, Zhengdao Group is a company engaged in research and development, production and other related businesses of batteries, motors, electronic control and other three-electric systems for new energy vehicles. It is headquartered in Hong Kong and has several subsidiaries around the world.
The horsepower is big, the speed is fast, and the speed is high. It is not unusual to see more of them. But what is the "super battery"? Just because of the "super battery" battery life is so cattle? It is necessary to know that Tesla, which is currently recognized as the number one battery life, is less than 500 kilometers!
In fact, the H600's super battery is a "graphene battery". The three words "graphene" have often been used by the financial industry in recent years, but they have disappeared after a while, and in various scientific and technological articles, people The views on graphene batteries are also mixed.
Can the dream of charging a thousand minutes of battery life be realized?
The answer to this question is yes, as we said before, the graphene battery is the most efficient battery in the future, while significantly reducing the charging time.
The graphene polycarbon battery can be charged with a large current of 10C, and the single block is fully charged for only 6 minutes, and hundreds of pieces are charged in series, and up to 95% in 10 minutes. Its power density is high, it can reach 200W/KG~1000W/KG, which is equivalent to more than 3 times of current lithium battery, which means that the cruising range can reach about 3 times of the current battery pack.
And from the current research results of the new graphene battery, after the battery is fully charged, it is short-circuited with a nail gun, and there is no reaction at all. Even if it is burned on fire, it will not explode. This plays an important role in ensuring the safety of the car.
Finally, let's talk back to the Zhengdao Auto. In addition to this year's latest concept car at the two international auto shows, and revealed some of the graphene battery technology, it is rumored that it has solved most of the graphite in the US dedicated graphene battery research center. The problem of mass production of olefin batteries.
In the end, whether the right car is really holding such a revolutionary technology, I don’t know it yet, but I can know that since the right car can talk, naturally there is a certain degree of enthusiasm. As it gets closer and closer in 2019, the answer is also Getting closer and closer to us.
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