What are the advantages and disadvantages of graphene batteries and lithium batteries?

1. The advantages and disadvantages of graphene batteries 1. Graphene batteries are single atomic layer flat films composed of carbon atoms with a thickness of only 0.34 nanometers. It is currently the lightest, thinnest and hardest nanomaterial known in the world, with light transmittance Good, it can be folded; 2. Graphene is the most conductive material in the world. Graphene composite conductive powder is added to the traditional mobile phone lithium battery, which improves the rate charge and discharge performance and cycle life of the battery; 3. Safety and stability , The new type of graphene polycarbon capacitor battery, after the overflow of electricity, use a nail gun to short-circuit it, and there is no reaction; it will not explode when burned on a fire; 4. The process characteristics are not compatible, the specific surface area of u200bu200bgraphene If it is too large, it will cause a lot of process problems in the process of dispersing and homogenizing the existing lithium battery; 5. The graphene battery on the market is not a pure graphene battery, but some graphene is doped on the basis of the lithium battery. Compared with the traditional lithium battery, 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 high. The production process is still not mature enough, and it is currently only in the laboratory stage and cannot reach the point of mass production. Second, the advantages and disadvantages of lithium batteries 1. High energy density, its volume energy density and mass energy density can reach 450W.h/dm3 and 150W.h/kg respectively, and continue to improve; 2. Long service life, 100% DOD charge and discharge can reach more than 900 times; when using shallow depth (30% DOD) charge and discharge, the number of cycles has exceeded 5000 times; 3. There is no memory effect like Ni-Cd and Ni-MH batteries, and the cycle performance is superior; 4. Poor compatibility with general batteries, because lithium batteries can only be replaced when three general batteries (3.6V) are used; 5. The cost is high, mainly because the price of the cathode material LiC002 is high. With the continuous development of technology, LiMn204, LiFeP04, etc. can be used as the positive electrode, which is expected to greatly reduce the cost of lithium batteries. In general, although graphene batteries far outperform traditional lithium batteries in terms of performance, they still cannot replace lithium batteries in the use of electric vehicle batteries. Despite this, the research and development of graphene batteries is still ongoing. The simplification of the process and the optimization of materials are the focus, and it may not be a dream to use it as an electric vehicle battery in the future. It can be seen that graphene batteries have considerable potential and are the best material to replace lithium batteries. Due to the poor safety and fire risk of lithium batteries, graphene batteries have become a highly anticipated hot research direction in recent years. In addition, the new type of nano-tungsten oxide lithium battery with high safety performance may also become one of the most promising batteries in the future. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.