Advantages and disadvantages of graphene batteries
Graphene was not discovered until 10 years ago because it has extremely low resistance and ultra-fast electron migration speed, so the charging rate will be very high. It is the material of choice for manufacturing future batteries, but there are only a few experiments in research. The room products have not reached the mass production stage, and the specific stage of mass production is about 5-10 years.
In view of the outstanding performance of graphene, recent news about graphene applications has always attracted attention.
The most popular of these is the graphene battery. But it is hard to get recognition from the industry. Liu Guanwei believes that graphene can be used as a conductive agent to promote the rapid charge and discharge of lithium batteries. In theory, the rate performance can be improved. However, if the dispersion process is not in place and the mixing is uneven, everything is in the air: "The cost of graphene is too high. The incompatibility of process characteristics in lithium batteries makes the technology of 'graphene battery' close to non-existence, and its Shantou significance is far greater than practical value."
advantage:
1: low cost, 77% lower than lithium battery cost
2, high energy density, battery life can reach 1000km, you can completely abandon the gasoline car
3: high stability, long battery life
Disadvantages:
All of the above are media and expert propaganda, whether it is true or not, who knows! When the road test in 2015 is out, you can find out.
The lithium compound (lithium iron phosphate, lithium cobaltate, etc.) is the positive electrode of a large-capacity battery, and the two are not mutually exclusive. The capacity of the battery is large, and the amount of charge is limited for a limited time and limited current. Even if the cruising range can really reach more than 1000 kilometers, and it is filled with so much electricity in a short time, its reliability and safety become the most important content.
If the graphene battery is really cheap, high density, and long life, it is really a revolutionary technology.
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