27A battery

　　Are graphene 27A battery really a revolutionary technological breakthrough?

　　Are graphene 27A battery really a revolutionary technological breakthrough? Graphene can be used as a conductive agent to promote fast charging and discharging of 27A battery. It can theoretically improve the rate performance. However, if the dispersion process is not in place and the mixing is uneven, everything will be a castle in the air. The tapped and compacted densities of graphene are very low and the cost is extremely expensive. There is no possibility of directly replacing graphite materials as negative electrodes for 27A battery.

　　Are graphene 27A battery really a revolutionary technological breakthrough?

　　The formation of composite materials between graphene and other new anode materials, such as silicon-based and tin-based materials and transition metal compounds, is currently the most popular research field in "nano lithium batteries".

　　Are graphene 27A battery really a revolutionary technology? It seems that it is too early to say so now. The biggest obstacle to the commercial use of graphene is cost. Graphene is used in lithium batteries to replace the past conductive carbon or graphite electrodes. Compared with the market price of graphene of hundreds of dollars per kilogram, these two are sold by the ton. It’s really a bargain price, and the ones that cost hundreds of dollars are still “inferior products.” The price of truly excellent graphene is as high as several thousand yuan per gram. I would like to ask, based on the current battery, are users willing to trade such a high raw material price difference for the advantages of improved heat resistance and doubled lifespan? I'm afraid not.

　　Therefore, as a supplement to traditional lithium batteries, graphene is indeed much more advanced than current technology. However, due to cost and its own characteristics, it is difficult to replace traditional lithium batteries in various fields from now on. In general, graphene lithium batteries are still a laboratory product. Graphene is just one of them, and there is no urgent demand from the market and users for graphene lithium batteries.

　　Graphene 27A battery are now just an attempt by people to use this material. Perhaps graphene is not revolutionary in improving battery performance, but in other fields, the changes brought by graphene may be earth-shaking, such as flexibility Devices semiconductor displays, energy materials, supercapacitors, high-speed transistors, optoelectronic devices, etc.

　　Graphene is very similar to it in terms of electrochemical properties and has nothing special about it. On the contrary, the production cost is higher, the production process causes more serious environmental pollution, and the actual operation and processing performance are more difficult. Based on my many years of experience in lithium battery R&D and production, the author does not believe that graphene will have much practical application value in the field of 27A battery. The current so-called "graphene battery" is pure speculation.

　　Taking into account the material cost, production process, processability and electrochemical performance, the author believes that the possibility of graphene or graphene composite materials being actually used in lithium battery anodes is very small and the prospects for industrialization are slim. The future application prospects of graphene in 27A battery are slim. Compared with 27A battery, the editor believes that the application prospects of graphene in supercapacitors, especially micro-supercapacitors, seem to be slightly more reliable.

　　Which is better, graphene battery or graphene lithium battery?

　　Graphene batteries are hailed as the "King of New Materials" by researchers and major media. They are new nanomaterials known to mankind that have high strength, good toughness, light weight, high light transmittance and good conductivity. The performance of graphene is much better than that of lithium batteries, especially in terms of battery power characteristics, capacity, and lifespan. However, graphene has not yet reached the practical stage, and there is still a long way to go before mass production.

　　Graphene has greater advantages than traditional batteries. In terms of service life, its service life is twice that of lithium batteries and four times that of hydrogen batteries. In terms of weight, it is about half the weight of a traditional battery. In terms of charging rate. Graphene batteries can be improved dozens or even hundreds of times.

　　The huge shortcomings of lithium batteries in terms of safety, endurance, environmental pollution and charging speed have begun to seriously restrict the development of major high-tech industries. Therefore, many corporate R&D departments have set their sights on more advanced graphene batteries. .

　　Although electrodes using graphene materials have greatly improved battery life and battery charging speed, due to the high specific surface area and other properties of the graphene material itself, it is incompatible with the current technical system of the lithium-ion battery industry, and the energy density has not been achieved. The theoretical doubling is only an increase of 10%.

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