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Pushing Up Lithium Storage through Nanostructured Polyazaacene Analogues as Anode
Author(s) -
Wu Jiansheng,
Rui Xianhong,
Long Guankui,
Chen Wangqiao,
Yan Qingyu,
Zhang Qichun
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201503072
Subject(s) - anode , materials science , conjugated system , lithium (medication) , heteroatom , quinoxaline , polymer , chemical engineering , nanotechnology , electrode , polymer chemistry , organic chemistry , composite material , chemistry , ring (chemistry) , medicine , engineering , endocrinology
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‐(2 H )‐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.