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The performance of graphite is much better than that of lithium batteries, especially in terms of battery power characteristics, capacitance, and lifespan. However, graphene has not yet reached the practical stage and there is still a long way to go before mass production.
What is the difference between lithium batteries and graphene batteries?
Graphene battery: Graphene battery is a honeycomb shaped flat film formed by sp2 hybridization of carbon atoms. It is a quasi two-dimensional material with only one atomic layer thickness, so it is also called single atomic layer graphite. A new energy battery has been developed by utilizing the rapid and large-scale shuttle motion of lithium ions between the graphene surface and electrodes. Due to its high conductivity, strength, and ultra-thin properties, graphene has outstanding advantages in the field of aerospace applications.
Graphene is hailed as the "king of new materials" by researchers and major media. It is a new type of nanomaterial known to humans to have high strength, good toughness, light weight, high transmittance, and excellent conductivity.
Lithium ion battery: "Lithium ion battery" refers to the energy storage substance in the battery, which undergoes battery reactions (chemical changes) during charging and discharging. It is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. The fifth generation product of rechargeable batteries, lithium metal batteries, was born in 1996. Its safety, specific capacity, self discharge rate, and cost-effectiveness are all superior to lithium-ion batteries.
The performance of graphite based batteries is much better than lithium batteries, especially in terms of power characteristics, capacitance, and lifespan. However, graphene has not yet reached the practical stage and there is still a long way to go before mass production. The huge shortcomings of lithium batteries in terms of safety, endurance, environmental pollution, and charging speed have begun to seriously limit the development of major high-tech industries. Therefore, many R&D departments of enterprises have turned their attention to more advanced graphene batteries and believe that this new type of battery will completely replace lithium batteries that have been in existence for more than 26 years in the future.
Why haven't graphene batteries replaced lithium batteries?
Graphene batteries have the highest strength, best toughness, as well as the characteristics of light weight and excellent conductivity. As early as a few years ago, Huawei announced its fast charging technology, which can charge a 3000mAh graphene battery to nearly half its capacity in just five minutes. It can be seen that graphene batteries are not only suitable for new energy vehicles, but can also be widely used in our mobile phone field. However, this is only in the experimental stage and there is still a long way to go before they can be applied in the market.
Graphene has greater and more advantages compared to traditional batteries. In terms of lifespan, its lifespan is twice that of lithium batteries and four times that of hydrogenated batteries. In terms of weight, it is only about half that of traditional batteries. In terms of charging speed. Graphene batteries can increase performance by tens or even hundreds of times.
In fact, there are graphene battery products on our market, such as in some high-end medical devices. However, these graphene batteries are not the pure graphene batteries we expected. They simply incorporate some graphene related technologies on the basis of lithium batteries. Compared with traditional lithium batteries, the performance improvement it brings is only a little bit. In addition, the cost of graphene is very high, and its manufacturing process is also very advanced. To reach the stage of mass production, there is still a long way to go. With such high costs and the magnitude of performance improvement, some manufacturers are naturally not interested in graphene batteries.
At present, graphene batteries are still immature and have not shown significant advantages over lithium batteries, so the era when lithium batteries need to be replaced may not arrive so early.
Graphene battery is considered to be one of the most promising materials in the future. But for the moment, its foam composition is greater than its practical application value. There are many factors that hinder the popularization of this material. Mass production and cost are the main obstacles to its popularization. If graphene battery wants to completely replace lithium battery in the short term, it may have a long way to go.
Advantages of using graphene batteries for electric vehicles:
1. The single endurance mileage can reach up to 1000 kilometers;
2. A single full charge only takes less than 8 minutes;
3. The service life is four times that of traditional hydrogenated batteries and twice that of lithium batteries;
4. Only half the weight of traditional batteries;
5. The cost of batteries is 77% lower than that of lithium batteries.
From this, it can be seen that graphene batteries have considerable potential and are the best material to replace lithium-ion batteries. Due to the poor safety and fire risk of lithium batteries, graphene batteries have become a highly anticipated research direction in recent years.
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