When the news came out, the whole network set off a wave of graphene fever. Everyone discussed how strong the battery life of mobile phones with graphene batteries is, and graphene concept stocks are also very popular. The whole electronics industry seems to have been beaten with chicken blood, and everyone is looking forward to the arrival of the graphene era.
However, a few hours later, Huawei officials poured cold water on enthusiastic consumers and investors: "The news released by Huawei in France is wrong, and P40 is not equipped with graphene batteries." Although it is proved to be false news, graphene battery is not a conceptual term, but the direction of most battery energy companies.
Graphene is the material with the highest thermal conductivity at present. If graphene is used to dissipate heat from lithium batteries, the fast charging speed of lithium batteries can be further improved. At the 56th Japan Battery Conference on 20 15, Huawei came up with the technology of using graphene to dissipate heat for lithium batteries, and demonstrated the achievements of fast charging technology that can fill 3000mAh batteries with 48% in 5 minutes.
If the heat dissipation of graphene is combined with the technology of graphene as the positive electrode of the battery, the capacity and charging speed of the lithium battery will be improved at the same time.
In 20 17, Samsung announced the development of a battery using graphene technology. In Samsung's demonstration, the battery capacity of this mobile phone with graphene technology has increased by 45%, and it can be fully charged within 12 minutes. The strong battery performance shows the potential of graphene battery in electronic products.
In any case, graphene is the key to the breakthrough of lithium batteries. But as a new material, graphene is still too young. Whenever human beings discover a new material, they always follow the principle of research-laboratory production-mass production-product process.
Different from other disciplines, materials science has a long experimental period from principle to product. Judging from the current manufacturing and application of graphene, graphene is still in the early stage. Although the global graphene market has reached $273 million in 20 18, and the average annual growth rate has maintained a high growth rate of 40%, most companies that produce graphene have not mastered the mass production technology of graphene, and the price of high-purity graphene materials produced is more than RMB 0.000 per gram/kloc-0.
Such expensive materials can only appear in laboratory research at most. If we want to commercialize them, no matter whether the technology and output are enough, I'm afraid no one is willing to pay for the price alone. Graphene, a technology that is still in the early stage of industrialization, may not appear in electronic products for another three to five years.
Few people will believe those who clamor that graphene will change the world immediately.
In any case, graphene is the key to the breakthrough of lithium batteries. But as a new material, graphene is still too young. Whenever human beings discover a new material, they always follow the principle of research-laboratory production-mass production-product process.
Different from other disciplines, materials science has a long experimental period from principle to product. Judging from the current manufacturing and application of graphene, graphene is still in the early stage. Although the global graphene market has reached $273 million in 20 18, and the average annual growth rate has maintained a high growth rate of 40%, most companies that produce graphene have not mastered the mass production technology of graphene, and the price of high-purity graphene materials produced is more than RMB 0.000 per gram/kloc-0.
Such expensive materials can only appear in laboratory research at most. If we want to commercialize them, no matter whether the technology and output are enough, I'm afraid no one is willing to pay for the price alone. Graphene, a technology that is still in the early stage of industrialization, may not appear in electronic products for another three to five years.
Few people will believe those who clamor that graphene will change the world immediately.
Graphene battery is actually used for battery heat dissipation, how much does it have to do with the battery itself?
Since the development of mobile phones, ordinary lithium batteries have long been unable to meet everyone's needs, and the thin mobile phone body can't accommodate lithium batteries with larger capacity, so now major manufacturers are vigorously developing graphene battery technology.
In today's era, the lithium battery of mobile phones is basically maintained at around 3000 mAh, and it will run out of power after one day of normal use. Even if they are equipped with unlimited charging and ultra-fast charging, the charging rate is far less than that of graphene batteries.
Graphene polymer battery, as a promising alternative material for mobile phone batteries, has the characteristics of strong electrical conductivity, strong thermal conductivity, high hardness and high toughness. Its energy density is more than three times that of lithium batteries on the market, and its service life is about two times that of ordinary lithium batteries.
In other words, if the battery in our mobile phone is a graphene polymer battery, the battery capacity can be increased from 3000 mA to at least 10000 mA within the same body capacity, and the charging speed can also be increased to only a few minutes.
But now graphene batteries only exist in the laboratory, and the production process and internal structure of high-purity graphene batteries are much more difficult than ordinary lithium batteries. Even if it is successfully developed in the laboratory, it still faces huge product line cost, quality control problems in mass production and high raw material cost, so it is difficult to commercialize graphene batteries in a short time.
However, there are already some lithium batteries based on graphene materials. This kind of battery is essentially a lithium battery, but because it is doped with graphene material, it has better heat dissipation, better conductivity and faster charging speed.
It is reported that the graphene battery will meet with you around 202 1. Are you looking forward to it?
In recent years, the development of smart phones is changing with each passing day, and the display screen size, overall size and camera of smart phones have changed greatly. But the battery hasn't changed much. Although the charging speed has increased and the battery capacity has also increased, it has not achieved great changes. As early as the end of 20 17, Samsung obtained a patent for a battery solution based on graphene. According to a report by Sam Mobile, the South Korean giant may soon replace lithium-ion batteries with graphene. Surprisingly, it takes only 5 minutes to plug in a smartphone and you can use it all day. Graphene ball material will increase the battery capacity by 45%. The charging speed will also increase by 5 times. It usually takes more than an hour for a lithium-ion battery to be fully charged, and only 5 minutes for a graphene battery. And although the charging speed is faster, it will not affect the aging speed of the battery.
Graphene is composed of carbon atoms closely combined into a hexagonal or honeycomb structure. The reason why graphene is so unique is that its structure is only one atomic layer thick, which essentially makes graphene sheets two-dimensional. This 2D structure produces very interesting characteristics, including excellent electrical and thermal conductivity, high flexibility, high strength and low weight. We are particularly interested in electrical conductivity and thermal conductivity, which are actually superior to copper (the most conductive metal element).
(1) Supercapacitor can make the battery life longer, the capacity larger, and it can be charged almost immediately.
The ideal use of graphene as a battery is as a "supercapacitor". Supercapacitors can store current like traditional batteries, but they can charge and discharge quickly. Lithium ion can store up to 180Wh per kilogram, while graphene can store up to 1 1,000Wh per kilogram.
(2) Graphene has higher conductivity than lithium ion batteries. This allows faster charging units to provide high current.
(2) Graphene batteries are also lighter and thinner than current lithium-ion batteries.
(3) Graphene is safer. Although lithium-ion batteries have a good safety record, there have also been major incidents involving defective products. Overheating, overcharge and breakdown will lead to the chemical imbalance of lithium-ion batteries out of control, which will lead to fire. Graphene is more stable, flexible and robust, and more resilient to such problems.
(1) Leading company Volbek Science and Technology Company realized how to generate graphene from carbon.
(2) Samsung Electronics has developed the core battery technology using graphene, which makes the lithium-ion battery have a longer service life and a faster charging speed, which is a potential industry milestone in mass production.
(3) Huawei has released a new graphene-reinforced lithium-ion battery, which can maintain its function at higher temperature and provide longer working hours.
(4) Volbek Materials Company of the United States released a strap, which is a portable and flexible power supply, and can be connected to any existing bag strap to realize a mobile charging station. The product weighs 450 grams and provides 7200 mAh, which may be the world's first graphene-enhanced battery.
(5) Tesla is also considering replacing the existing lithium batteries with graphene batteries and equipping them with the latest electric vehicles.
Graphene is considered as one of the most potential materials in the future. The application of graphene battery will help to change the smart phone industry. At present, the production cost is relatively high, and there is still a long way to go before commercialization, but it is very attractive for smart phones, wearable devices and electric vehicles in the future.
This is a new technology of industry transformation and an inevitable way. It is a technical point worthy of attention and has a bright future.
The above is my superficial view, welcome to correct me, thank you!
Taobao has many.
The cost is very high, so it can't be used on mobile phones for the time being. And so on, battery technology has been unable to get a breakthrough, the performance of mobile phones is getting better and better, and the power consumption is getting bigger and bigger, which requires higher battery optimization.