As an important parameter in LIBs that is greatly influenced by the solubility, the long-term cyclability was first investigated. Figure presents the cycling performance with a high coulombic efficiency of 1, 2, CP1 and CP2 at a current density of 0.5 A g -1 . During the first 30 cycles, all electrodes showed a steady decay in capacity, and the capacity values in a certain cycle follow the trend of 1 ˂ CP1 ˂ 2 ˂ CP2. The capacity loss in the first few dozen cycles is mainly ascribed to the electrolyte decomposition and the formation of solid electrolyte interphase (SEI) film, which is often observed for organic battery electrodes. The electrodes based on compounds 1, 2, CP1 and CP2 deliver reasonable capacities of 196, 293, 291 and 390 mAh g -1 after 30 cycles. (Figure ). In subsequent cycles, the capacity of 2 stabilized at 260 mAh g -1 , while 1 further underwent gradual capacity decay to 100 mAh g -1 after 240 cycles.