Researchers claim that they have managed to increase the capacity of the cathode for solid-state batteries (SSB), according to Nikkei.
An all-solid fluoride-ion battery has been developed by a group including automaker Toyota and Kyoto University.
It uses copper nitride in the cathode. Other materials such as manganese and lanthanum are also used in a perovskite crystal. Fluoride-ions move through NaCl slabs during the charging process.
The researchers claim materials would react to positively charged nitrogen, which would form an anion. Three electrons can be extracted for each nitrogen atom as opposed to one electron for every lithium-ion battery. That would increase the volumetric capacity of the battery, according to the group.
Professor Yoshiharu Uchimoto, one of the lead researchers, told Nikkei that batteries using anions such as nitrogen are rare but are “interesting as a science.” He said they are more durable and can withstand dozens of charge-discharge cycles.
If put into use in a complete cell, they could be more than twice the capacity of current lithium-ion batteries, Uchimoto said.
The researchers plan to test the battery in electric vehicles (EVs) after 2035. A driving range of 600km could be doubled, they reckon.
The academic article was originally published by the American Chemical Society.