After having largely contributed to the democratization of the electric car, Tesla is about to revolutionize the auto industry again. the Tesla Advanced Battery Researcha battery research center created in 2016 in collaboration with Dalhousie University (Nova Scotia, Canada), has made a discovery that could well disrupt the electric vehicle market.
Among the researchers at this center is Jeff Dahn, a scientist known worldwide for his research on lithium-ion batteries. Most of his research focuses on the amount of electricity that can be stored in a battery and their longevity.
Batteries that last 100 years
After several years of work, Jeff Dahn and his students have finally found a way to meet the challenges of tomorrow. They found a way to make batteries last over 100 years. In the Journal of the Electromechanical Societya specialized scientific journal, Jeff Dahn and his colleagues have published an article in which they explain their discovery.
To obtain this longevity record, they replaced the materials usually used in LFP (Lithium-Iron-Phosphate) batteries. Thus, to accompany lithium, they integrated nickel, manganese, cobalt and graphiteat low voltage.
At temperatures of 40, 55 and 70°C, these batteries can hold more energy than in an LFP accumulator. The number of life cycles is also higher.
The batteries of the future?
While there is still a long way to go before we (perhaps) find these batteries in electric vehicles, these discoveries are more than encouraging.
Indeed, the longevity of these batteries and their efficiency could solve most of the current technical limitations. This would already have a significant impact on the environment. Firstly because the batteries would be renewed much less often. Then because we would reduce our electricity needs, the energy density being much better.
In addition, these batteries require less cobalt, this rare metal extracted at 70% in the Republic of Congo in a tense context punctuated by conflicts (sometimes armed) and the exploitation of local populations (including children). Enough to make electric cars even greener than they already are.