Million-Mile Car Battery Unveiled By Ground-Breaking Research

In a ground-breaking paper published in the Journal of The Electrochemical Society (JES), Jeff Dahn announced to the world that Tesla will soon be ready with a battery that will possibly make their robot taxis and long-haul electric trucks viable. Last April, TESLA CEO Elon Musk had made an attention-grabbing promise that in the future his company will have a battery that lasts for a million miles. And now Tesla’s battery research partner, Jeff Dahn research group has delivered.

Dahn said, “Cells of this type should be able to power an electric vehicle for over one million miles and last at least two decades in grid energy storage.”

Doron Aurbach, JES batteries, and energy storage technical editor said “This comprehensive article is expected to be impactful in the field of batteries and energy storage. It is a very systematic study by one of the most renowned and prestigious electrochemistry groups in the world. It was a pleasure for me as a technical editor to handle this paper. It substantiates all the statements about the truly high quality and importance of JES, one of the leading and most prestigious journals in electrochemistry. JES provides an excellent service to the global electrochemistry community—and thousands of ECS members—regardless of ‘impact factors.'”

Dahn’s JES article has already received over 31,563 abstract views, more than 17,000 articles downloads, and numerous quotes in news outlets around the world.

In the paper, the Dalhousie researchers led by lithium-ion expert Jeff Dahn provide full details of the new cell to set a benchmark for further research. They chose a Ni-rich NCM cathode material with a specific capacity which is 20% higher than that of the cathodes used in Li-ion batteries that power present-day mobile electronic devices.

The cathode material used by them is NCM 523 (50 percent Nickel, 20 percent Cobalt, 30 percent Manganese) which is stable and can serve as an excellent reference and starting point for further developments. Other vital components that were considered include graphite anodes and blends of solvents, additives, and salt for the electrolyte solutions.

According to Aurbach, the batteries described in the paper can be used for electric vehicles straightaway.

He added, “However, since the goal of the study was to provide a reliable benchmark and reference for Li-ion battery technology, the specific energy density of the batteries described is not the highest compared to what can be really reached by advanced Li-ion batteries. Based on the study, Li-ion batteries will soon be developed that make driving over 500 kilometers (over 300 miles) from charge to charge possible.”

More pioneering research announcements are expected soon from Tesla and ECS member, Jeff Dahn.

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