DOE: DOE: No ‘toxic’ chlorine ion in electron-ion system
The United States Energy Department’s Office of Science and Technology Policy (OSTP) said Wednesday that no “toxic” chlorine ion exists in the electron-ions used in lithium-ion batteries.
The agency also said it had not found any evidence that the ion is “toxicity-producing.”
“There is no evidence to suggest that lithium-iron battery chemistries are harmful,” OSTP Director Dr. Jay Solomon said during a press conference Wednesday at the Oak Ridge National Laboratory in Tennessee.
“The chemistry is safe, the electrolyte is safe.”
The DOE said the ions have been used for years in the production of many products from the solar cell industry to the battery packs used in electric vehicles.
“This information is of particular importance for both the commercial and research communities as it provides new insight into the chemical makeup of ion electrolytes,” Solomon said.
Lithium-iron batteries are currently being developed for a variety of applications, including batteries for the electric vehicle and space travel, the agency said.
The agency did not say when the battery technology could be commercially available.
The new report, which analyzed DOE data from 2010 to 2019, found that the use of lithium-in-ion cells in electric-vehicle batteries increased over the decade, from 8.4 million tons of Li-ion to 9.4 billion tons.
By contrast, the use in the solar industry decreased from 1.9 million tons to 0.9 billion tons, and the use for the space shuttle industry decreased to 1.1 million tons.
The report also found that lithium ions have a mass of 4.4 grams per cubic centimeter (g/cc).
That’s comparable to the weight of an American football, Solomon said, which is about 12 pounds.