A Dual‐Ion Organic Symmetric Battery Constructed from Phenazine‐Based Artificial Bipolar Molecules. Issue 29 (29th April 2019)

• Record Type: Journal Article
• Authors: Dai, Gaole; He, Yan; Niu, Zhihui; He, Ping; Zhang, Changkun; Zhao, Yu; Zhang, Xiaohong; Zhou, Haoshen
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 29(2019)
• Page Start: 9902
• Page End: 9906
• Publication Date: 2019-04-29
• Subjects: aromaticity -- bipolar organics -- energy storage -- phenazine -- symmetric batteries; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201901040
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: 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. Abstract : Charged aromatics : The 4, 4′‐(phenazine‐5, 10‐diyl)dibenzoate anion is used to construct a dual‐ion organic symmetric battery. The good performance of this battery shows that the use of this organic molecule allows to overcome the restrictions in voltage and energy density that symmetric batteries based on inorganic materials entail.