Elon Musk knows that the key to success in the electric car market is being at the forefront of technology. For this reason, the founder of Tesla is investing in various investigations.
jeff dahn and his team have just presented to society a document that sheds light on a nickel-based battery that has numerous advantages in relation to what is known up to now.
The Canadian scientist and his team have unveiled their findings in the Journal of Electrochemical Societyin which they affirm, among other things, that the battery in development that they have in hand combines the best qualities of the NCM type cells and LFP typeof which we have told you recently.
«The new cell could last 100 years if the operating temperature is kept controlled at 25 °C»
Jeff Dahn is known for partner with Tesla in 2016 to conduct research in the field of batteries for electric cars. The result of this collaboration is one of his best-known patents, that of the million-mile battery presented in 2020.
At the moment, Dahn and Tesla have a collaboration agreement until 2026 and the next project to be revealed has been the 100-year battery life. This project is part of a study program of high-performance materials for lithium-ion batteriesas well as methods of studying their performance and useful life.
100 year battery life
The published document describes a battery chemistry with the capacity to compete with the longevity of the LFP type, but retaining the energy density of the NCM type. In this way, on the one hand, competitiveness is increased, but also costs and the need for raw materials are reduced.
As the article determines, “with the single crystal Li[Ni 0,5 Mn 0,3 Co 0,2 ]O2 bagged cells with NMC532 graphite cathode (50% nickel, 30% manganese and 20% cobalt) were cycled at charges of 3.65 V and 3.80 V to facilitate comparison with LiFePO4 (LFP) cells.”
The results showed that the cells showed a high energy retention capacity without degrading during a large number of charge and discharge cycles. In addition, the research group points out that the new cell described in the document could last 100 years if the operating temperature is kept controlled at 25 °C».
“Ultra-high-precision coulometry and electrochemical impedance spectroscopy are used to complement the cycling results and investigate reasons for the improved performance of NMC cells,” the paper reiterates.
«These, balanced and charged at 3.8 V, show a better coulombic efficiency, less degradation of energy capacity and higher energy density compared to LFP cells and are expected to have a useful life of close to a century at 25°C.”
Source: Forococheselectricos.com