Researchers at a renowned research center have collaborated to develop a novel titanium-air battery and have successfully conducted laboratory testing. This marks the first publication of experimental results for a battery utilizing titanium as the active material. Titanium is garnering attention as a promising energy storage material due to its ability to provide up to four electrons per atom for charge transfer, its lightweight nature, and excellent resistance to corrosion.
Titanium is considered an inert and stable material. Scientists have successfully harnessed the electrochemical potential of an ionic liquid called EMIm(HF)2.3 F to store electrical energy. This ionic liquid, composed of atypical salts with an extremely low melting point, possesses unique electrical and material properties, making it applicable to various applications.
Theoretical energy density of the titanium-air battery is expected to be two to three times higher than that of zinc-air batteries, which are currently used as standard button cells in hearing aids, control modules, and sensors. The theoretical voltage range achievable by the titanium-air battery is similar to that of zinc-air batteries. In experiments, an average battery voltage of up to 1.2 volts and a relatively high discharge current of up to 0.75 milliamperes per square centimeter were measured.
While titanium is considered an expensive material, it is significantly cheaper in terms of material costs compared to lithium but more expensive than aluminum. Titanium ranks as the ninth most abundant element in the Earth's crust, ensuring a relatively abundant resource availability."
