title: Pushing Up Lithium Storage through Nanostructured Polyazaacene Analogues as Anode.
abstract: According to the evidence from both theoretical calculations and experimental findings, conjugated ladder polymers containing large π-conjugated structure, a high number of nitrogen heteroatoms, and a multiring aromatic system, could be an ideal organic anode candidate for lithium-ion batteries (LIBs). In this report, we demonstrated that the nanostructured polyazaacene analogue poly(1,6-dihydropyrazino[2,3g]quinoxaline-2,3,8-triyl-7-(2H)-ylidene-7,8-dimethylidene) (PQL) shows high performance as anode materials in LIBs: high capacity (1750 mAh g(-1), 0.05C), good rate performance (303 mAh g(-1), 5C), and excellent cycle life (1000 cycles), especially at high temperature of 50 °C. Our results suggest nanostructured conjugated ladder polymers could be alternative electrode materials for the practical application of LIBs.
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore).
authors.forename: Jiansheng
authors.initials: J
authors.lastname: Wu
authors.affiliation: School of Energy and Environment, Anhui University of Technology, Anhui 243002 (China).|School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore).
authors.forename: Xianhong
authors.initials: X
authors.lastname: Rui
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore).
authors.forename: Guankui
authors.initials: G
authors.lastname: Long
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore).
authors.forename: Wangqiao
authors.initials: W
authors.lastname: Chen
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore). alexyan@ntu.edu.sg.
authors.forename: Qingyu
authors.initials: Q
authors.lastname: Yan
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798 (Singapore). qczhang@ntu.edu.sg.|Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore). qczhang@ntu.edu.sg.
authors.forename: Qichun
authors.initials: Q
authors.lastname: Zhang
keywords: anode materials; electrochemistry; ladder polymers; lithium batteries; polyazaacene analogues