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A Dual‐Ion Organic Symmetric Battery Constructed from Phenazine‐Based Artificial Bipolar Molecules
Author(s) -
Dai Gaole,
He Yan,
Niu Zhihui,
He Ping,
Zhang Changkun,
Zhao Yu,
Zhang Xiaohong,
Zhou Haoshen
Publication year - 2019
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.201901040
Subject(s) - phenazine , ion , alkali metal , salt (chemistry) , environmentally friendly , battery (electricity) , molecule , fabrication , dual (grammatical number) , diode , materials science , chemistry , combinatorial chemistry , optoelectronics , organic chemistry , physics , medicine , art , ecology , power (physics) , alternative medicine , literature , pathology , quantum mechanics , biology
Symmetric batteries received an increasing research interest in the past few years because of their simplified fabrication process and reduced manufacturing cost. In this study, we propose the first dual‐ion organic symmetric cell based on a molecular anion of 4,4′‐(phenazine‐5,10‐diyl)dibenzoate. The alkali salt of 4,4′‐(phenazine‐5,10‐diyl)dibenzoate allows a facile transport of cations and large anions, and remains stable in both oxidized and reduced states. The large potential difference between phenazine and benzoate results in a high cell voltage of 2.5 V and an energy density of 127 Wh kg −1 at a current rate of 1 C. The introduction of bipolar organic materials may further consolidate the development of symmetric batteries that are fabricated from abundant elements and environmentally friendly materials.