Nickel Hydride No. 5 battery

In addition to graphene, what other Nickel Hydride No. 5 battery technologies are there?

Graphene is the thinnest and hardest nanomaterial known in the world. It has extremely low resistivity and extremely fast electron migration speed. It is known as the new generation of "king of materials" in the 21st century. Graphene battery is a new type of battery developed by using the characteristics of lithium ions moving rapidly and in large quantities between the graphene surface and the electrode.

The energy density of the common ternary lithium battery is 180-200mAh/g, while the energy density of graphene polymer battery can exceed 600mAh/g. In other words, if the battery on the Tesla P85 is replaced with a graphene battery of the same weight, its cruising range will reach about 1500km, which is three times the original.

In addition to high energy density, the charging speed of graphene batteries is also much faster than that of lithium batteries, which can effectively solve the problem of long charging time. Its life is also very long, which can reach twice that of lithium batteries.

The performance of graphene batteries is superior, but the cost is not high. On the contrary, it is 77% lower than that of lithium batteries. The use of graphene batteries will effectively reduce the cost of electric vehicles and thus enhance market competitiveness.

However, as we all know, due to technical reasons, graphene batteries cannot be commercialized for the time being (so far, no graphene-based lithium batteries have been developed). However, this situation may be improved within a few years, because there are already several new types of batteries under development, which may emerge at any time and change the world. Then the editor will take you to know several other more powerful batteries besides graphene.

Lithium-sulfur battery

Lithium-sulfur battery is a type of lithium battery that uses sulfur as the positive electrode material of the battery. The theoretical energy density of lithium-sulfur battery is as high as 1675mAh/g, which is much higher than that of graphene battery.

Some domestic manufacturers have added graphene materials to lithium-sulfur batteries to improve their performance.

The problem currently faced by lithium-sulfur batteries is that sulfur will dissolve into the electrolyte solution to form sulfide, and the cathode made of sulfur will be exhausted after only a few weeks, resulting in battery failure. However, at present, some domestic manufacturers have solved this problem by adding graphene materials to lithium-sulfur batteries to fix the sulfur cathode, and lithium-sulfur batteries are one step closer to practical application.

In addition to graphene, what other great battery technologies are there?

Isotope nuclear batteries

Isotope nuclear batteries are actually unrelated to nuclear reactions (nuclear fusion, nuclear fission). They use the decay of radioactive isotopes to generate energy. Its biggest feature is its long life, which can reach more than ten years or even hundreds of years. During this period, isotope nuclear batteries can continuously release electrical energy without charging.

Isotope nuclear batteries were first used on spacecraft and later entered the civilian field to provide power for pacemakers and artificial hearts. Domestic isotope nuclear batteries are also used on my country's Yutu lunar rover.

In addition to graphene, what other great battery technologies are there?

To apply isotope nuclear batteries to electric vehicles, two problems need to be overcome: low output power and high cost. Take the SNAP-27A nuclear battery on the Apollo spacecraft as an example. Its output power is only 63.5W, and the power output in a day is less than 2kWh, which is basically a drop in the bucket for electric vehicles. As for the cost, it is said that my country once purchased an isotope nuclear battery with an output power of 500mW from Russia, and the price was as high as 30 million yuan.

Once the isotope nuclear battery makes a breakthrough, cars in the future will not need to be refueled or charged.

Obviously, nuclear batteries are still a bit sci-fi for electric vehicles (not only sci-fi, but the name sounds high-end). However, once the problems of output power and cost are solved, electric vehicles can be driven on the road without charging for life, and gas stations and charging stations will become history. Isotope nuclear batteries are truly a technology of the future. Perhaps in 50 years, they will replace all other batteries and become an indispensable part of our lives.

Editor's comment: Batteries are the core components of electric vehicles, which directly determine the most critical range for electric vehicles. As new energy gradually heats up, investment in the battery industry is also increasing. In the next few years, battery technology will usher in rapid development, and electric vehicles will also benefit greatly from it.

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