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Home / Science / The Tesla battery researcher is excited about the new battery technology developed by the army

The Tesla battery researcher is excited about the new battery technology developed by the army



A new Li-ion battery technology developed by the US Army has aroused the interest of Jeff Dahn, Tesla's most important battery research partner.

In the latest issue of Nature, the CCDC Army Research Laboratory (ARL), The Element of the US Army has published a study demonstrating a new battery technology based on new cathode chemistry.

They claim that the chemistry "is completely free of transition metal and provides unprecedented high capacity by reversibly storing Li ions at high potential (~ 4.2V). "

The new technology" opens up the possibility of significantly increasing the energy density of lithium-ion batteries due to the watery nature of the electrolyte while at the same time ensuring safety. [1

9659003] Combined with their earlier development of "Water-in-Salt Electrolytes (WiSE)", they can achieve an impressive energy density of 460 Wh / kg.

Some soldiers have to carry between 15 and 25 pounds of batteries and this technology could significantly lower the weight and make the battery safer.

Dr. Kang Xu, an ARL colleague and senior chemist, said of the development:

"Such a high-energy, safe and potentially flexible new battery will likely provide soldiers with what they need on the battlefield: reliable high-energy source with robust tolerance Abuse. It is expected to significantly improve the mobility and lethality of the soldier while relieving logistical demands.

While it was developed with this goal in mind, according to ARL it could also end up in "civil applications for portable electronics, electric vehicles and large vehicles" -scale grid storage. "

Several battery researchers have commented on the new study, including Professor Jeff Dahn, who is particularly excited about the work:

" The work of the University of Maryland and the Army team is the best creative new battery chemistry I have seen in at least 10 years. The fact that LiCl and LiBr reversibly convert and form halogen-intercalated graphite is truly incredible. The team has shown encouraging reversibility for 150 cycles and has shown that high energy densities should be achievable in 4 volt cells containing no transition metals and nonaqueous solvents. It remains to be seen if a practical long-lived commercial cell can be developed, but I am very excited about this research. "

Dahn is considered a pioneer in Li-ion battery cells. He has been working on Li-ion batteries since they were invented. He is credited with having helped to extend the life cycle of the cells, which contributed to their commercialization. His work now focuses mainly on a possible increase in energy density and lifetime.

In 2016, Dahn transferred his research group from their 20-year research contract with 3M to a new association with Tesla under the newly formed name & # 39; NSERC / Tesla Canada & # 39; Industrial Research ".

Earlier this year, we reported that it had filed a new battery cell patent for Tesla, which provides for faster charging, longer life, and lower costs.

He and his students have developed new chemical processes They're already making their way into Tesla's batteries.

This new battery development, says Dr. Kang, "requires more research to develop a practical large battery."


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