Nitrogen-Containing Polycyclic Quinones as Cathode Materials for Lithium-ion Batteries with Increased Voltage

作者：Shimizu Akihiro; Tsujii Yutaka; Kuramoto Hiroki; Nokami Toshiki; Inatomi Yuu; Hojo Nobuhiko; Yoshida Jun ichi^*

来源：Energy Technology, 2014, 2(2): 155-158.

DOI：10.1002/ente.201300148

• electrochemistry
• electronegativity
• lithium-ion batteries
• nitrogen
• quinones

Although organic cathode materials have received significant research interest as cathode materials of lithium-ion batteries because of sustainability and flexibility, they suffer from lower voltages compared to inorganic materials. To increase the voltage of batteries using organic cathode materials without decreasing the capacity, we studied the effect of the replacement of the CH moieties beta to the carbonyl group of quinones with nitrogen atoms. The coordination of N to Li in the reduced forms and the greater electronegativity of N compared to C make reduction energetically more favorable. The lithium batteries based on the nitrogen analogues of quinones as cathode materials exhibited voltages higher than 3.0 V (the first stage).

• 出版日期2014-2