High-performance Lithium Secondary Batteries Using Cathode Active Materials of Triquinoxalinylenes Exhibiting Six Electron Migration

A coin cell battery is fabricated using triquinoxalinylene as a cathode active material and a lithium metal anode. The first discharge curve shows a remarkably large capacity (420 A h kg(-1)), which corresponds to a six electron migration in the first charge. However, repeating the charge-discharge until the 15th cycle gradually decreases the capacity, but after that the capacity remains constant with a value of 220A h kg(-1). This large value remains even after 100 cycles. Additionally, the use of a tribromo-substituted derivative gives a large discharge capacity (approximate to 250 A h kg(-1)) due to a comparatively stable six electron migration from the first charge-discharge cycle.