ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,555,789, issued on Feb. 17, was assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT Co. LTD. (Osaka, Japan).
"Secondary battery" was invented by Kazuhiro Iida (Nara, Japan) and Masanobu Takeuchi (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "This secondary battery comprises a positive electrode, a negative electrode, and an electrolyte. The electrolyte contains a solvent containing water, and a lithium salt. The negative electrode has a negative electrode active material that contains a carbon material. In the carbon material, the peak intensity ratio (D/G value) of a D band a G band in the Raman spectrum obtained using Raman spectrosco...