Volume 133, Issue 11 pp. 5858-5863
Zuschrift

Rechargeable Aqueous Aluminum Organic Batteries

Jiangchun Chen

Jiangchun Chen

School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191 China

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Qiaonan Zhu

Qiaonan Zhu

School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191 China

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Dr. Li Jiang

Dr. Li Jiang

College of Optical and Electronic Technology, Jiliang University, Hangzhou, 310018 China

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Rongyang Liu

Rongyang Liu

College of Optical and Electronic Technology, Jiliang University, Hangzhou, 310018 China

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Yan Yang

Yan Yang

School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191 China

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Mengyao Tang

Mengyao Tang

School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191 China

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Jiawei Wang

Jiawei Wang

School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191 China

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Prof. Hua Wang

Corresponding Author

Prof. Hua Wang

School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191 China

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Prof. Lin Guo

Corresponding Author

Prof. Lin Guo

School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191 China

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First published: 13 December 2020
Citations: 25

Abstract

Aqueous aluminum-ion batteries (AABs) are regarded as promising next-generation energy storage devices, and the current reported cathodes for AABs mainly focused on inorganic materials which usually implement a typical Al3+ ions (de)insertion mechanism. However, the strong electrostatic forces between Al3+ and the host materials usually lead to sluggish kinetics, poor reversibility and inferior cycling stability. Herein, we employ an organic compound with redox-active moieties, phenazine (PZ), as the cathode material in AABs. Different from conventional inorganic materials confined by limited lattice spacing and rigid structure, the flexible organic molecules allow a large-size Al-complex co-intercalation through reversible redox active centers (-C=N-) of PZ. This co-intercalation behavior can effectively reduce desolvation penalty, and substantially lower the Coulombic repulsion during the ion (de)insertion process. Consequently, this organic cathode exhibits a high capacity and excellent cyclability, which exceeds those of most reported electrode materials for AABs. This work highlights the anion co-intercalation chemistry of redox-active organic materials, which is expected to boost the development of high-performance multivalent-ion battery systems.

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