文摘
Herein we report the development of nanostructured poly(1,4-dihydro-11H-pyrazino[2′,3′:3,4]cyclopenta[1,2-b]quinoxalin-11-one) (PPCQ), a novel conjugated ladderlike oligomer with the presence of a rich amount of heteroatoms, as the anode material. Beyond its remarkable lithium storage of 972 mAh g–1 after 120 cycles, the superior cycle life and stable capacity performance of 489 mAh g–1 revealed by ultralong testing of 1000 cycles (with an average Coulombic efficiency 99.8%) at a high current density of 2.5 A g–1 indicate its excellent electrochemical stability to be promisingly applied for high-performance lithium-ion batteries (LIBs).