This battery can last for 100 years

Tesla has been operating its Canadian battery research lab since 2016ie has since been funded by a recognized expert in the field, Jeff Dahn university research team. THE Dalhousie University its scientists are mostly working on how to make lithium-ion batteries more durable and cheaper while also increasing their energy density.

The Electrek stabbed a recent study published by the team which states that an electrolyte cocktail that can guarantee axi function for up to 100 years has been successfully tested.

When your battery survives

The research its goal The results of which are: Journal of the Eletrochemical Society published in the scientific journal was to create a nickel-based, high-energy-density cell that is even more durable than LFPs.. The latter, lithium-iron-phosphate chemistry, is known to have a modest capacity of nickel or cobalt and three to four times the lifespan of conventional NMC cells. At present, the world’s electric car industry is moving smaller battery-powered, cheaper models with LFP axles, while longer-range or higher-performance versions are equipped with conventional or nickel-rich NMC or NCA cells. Roughly half of Tesla’s sales last year were made with iron phosphate chemistry.

Researchers are now NMC532 new lithium ion cell made which uses a new LiFSI composition instead of the traditional LiPF6, ie lithium hexafluorophosphate electrolyte, which significantly extends life by up to 40, 55, or 70 degrees Celsius. This is important because if you remove (accelerate) or charge (lightning) the battery to high power, it will become warm, which is not normally good for life.

According to the study, it was also observed that if the cells were not allowed to heat above 25 C and the voltage was maximized at 3.8 volts, the lifespan would increase to an extremely long time of around 100 years.

Among the cathode components of the new cells named NMC532 – as the abbreviation indicates – nickel, manganese and cobalt are also found in a ratio of 5-3-2. Those interested in the subject may immediately notice the relatively high cobalt ratio, as the latest generation axles are now labeled 8-1-1 as they try to reduce the amount of ingredient in problem extraction. However, there may be special uses, such as life-saving devices implanted in the human body, where perpetual life would play an important role, as its replacement may involve surgery. Another interesting use could be in the field of industrial energy storage, as the high number of cycles can drastically reduce the unit cost of investment.

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The graphs show the effect of LiFSI-based electrolyte on the number of cycles for conventional NMC and LFP cells at different temperatures, 20, 40, and 55 degrees Celsius, respectively. The top row shows the change in capacitance and the bottom row shows the change in voltage as a function of the number of cycles. Source: Dalhousie University / Tesla

In addition, based on current results LiFSI-based electrolyte has a beneficial effect on low-cobalt or cobalt-free chemistry. According to the attached graphs, at higher temperatures, for example, even the otherwise quite durable LFP cells will double their useful life.

Of course, this is a scientific publication, not news about the start of series production, but we hope that the technology will sooner or later appear in commercially available axles as well.

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