December 27 (UPI) — Electric car maker Tesla recently unveiled a patent aimed at extending the life of lithium-ion batteries using a variety of electrolyte additives,media reported. If the technology is put into use, the battery life is expected to be extended to 1.6 million kilometers.
Pictured: Tesla’s electric car and battery manufacturing facility in California
Tesla filed a patent in August 2018 entitled dioxinand and pyrethlicosinas as electrolyte additives for lithium-ion batteries. The patent focuses on improving the company’s rechargeable battery system by adjusting the chemical composition of the battery.
The patent states that when added electrolyte additives, such as lithium salts, are combined with non-aqueous solutions, they can significantly improve the life and performance of the battery system. Non-aqueous solutions no longer use water as a solvent, but use another liquid.
“Electrolyte additives have been shown to be effective in extending the life and performance of lithium-ion batteries,” Tesla said in a statement. To further promote the adoption of electric vehicles and grid energy storage applications, lithium-ion battery chemicals that can be used at high temperatures and high battery voltages for longer periods of time, without significantly increasing costs, need to be developed. In the process of battery storage and operation, the introduction of a small amount of electrolyte additives is a practical method to form a protective solid electrolyte interface layer (SEI) to limit electrolyte decomposition. In recent years, extensive research has helped to develop such additives, such as ethylene carbonate (VC), factite carbonate (FEC), propylene-l-3-sulfur (PES), ethylene sulfate (DTD) and lithium difluorophosphate (LFO). “
Tesla has realized that rising temperatures are not good for the battery system to last. In a previous patent, Tesla outlined a cooling system that could help store energy for longer. While heat dissipation is a key issue to overcome in the use of lithium-ion batteries, especially when Tesla owners are driving in performance mode, engineers realize that electrolyte additives may be a way to improve performance and longevity without significantly increasing costs.
In part, Tesla’s leading position in the electric car industry is largely due to its batteries and, more specifically, its battery chemistry. It is these factors that enable Tesla to maximize its in-car battery pack, which is a key reason why the Model S can travel 600kilometers fully and the Porsche Taycan can only travel 320km. The patent confirms that Tesla remains committed to improving its batteries to keep the company ahead of the electric vehicle segment.
At Autopilot Investor Day in April 2019, Tesla CEO Elon Musk promised owners that the company would soon provide its vehicles with batteries that last more than 1.6 million kilometers. While Musk’s promises may seem unrealistic, critics are quick to realize that Tesla may be closer to that goal than many believe. In September, researchers led by Jeff Dahn, a scientist at Dalhousie University, said they had developed a new lithium-ion battery that could travel 1.6 million kilometers or be used in energy storage systems for 20 years.
Thanks to the progress made in these engineering technologies, Tesla’s battery technology is also improving. In the case of cars, having a car that can run for 20 or 30 years without yearly maintenance would be very pioneering. Convenience, high performance and long life are three of Tesla’s goals, and thanks to electrolyte additives, a patent for an advanced and more affordable battery system could allay many car owners’ concerns. (Small)