Novel Conjugated Ladder-Structured Oligomer Anode with High Lithium Storage and Long Cycling Capability.
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).
School of Materials Science and Engineering, Nanyang Technological University , Singapore, 639798, Singapore.
Jian
J
Xie
School of Materials Science and Engineering, Nanyang Technological University , Singapore, 639798, Singapore.
Xianhong
X
Rui
School of Materials Science and Engineering, Nanyang Technological University , Singapore, 639798, Singapore.
Peiyang
P
Gu
Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) , 30 South Puzhu Road, Nanjing 211816, China.
Jiansheng
J
Wu
School of Materials Science and Engineering, Nanyang Technological University , Singapore, 639798, Singapore.
Zhichuan J
ZJ
Xu
School of Materials Science and Engineering, Nanyang Technological University , Singapore, 639798, Singapore.
Qingyu
Q
Yan
School of Materials Science and Engineering, Nanyang Technological University , Singapore, 639798, Singapore.|Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore.
Qichun
Q
Zhang
anode; high performance; ladder-like oligomer; lithium ion; long cycling; organic electrode; rechargeable battery