Carbonyl-rich Poly(pyrene-4,5,9,10-tetraone Sulfide) as Anode Materials for High-Performance Li and Na-Ion Batteries |
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Authors: | Kang Li Shufei Xu Donglai Han Zhenjun Si Heng-guo Wang |
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Institution: | 1. School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022 P. R. China;2. Comprehensive Technical Service Center of Penglai Customs, Yantai, 26560 P. R. China |
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Abstract: | Organic carbonyl electrode materials are widely employed for alkali metal-ion secondary batteries in terms of their sustainability, structure designability and abundant resources. As a typical redox-active organic electrode materials, pyrene-4, 5, 9, 10-tetraone (PT) shows high theoretical capacity due to the rich carbonyl active sites. But its electrochemical behavior in secondary batteries still needs further exploration. Herein, PT-based linear polymers (PPTS) is synthesized with thioether bond as bridging group and then employed as an anode material for lithium-ion batteries (LIBs) and sodium-ion batteries (SIBs). As expected, PPTS shows improved conductivity and insolubility in the non-aqueous electrolyte. When used as an anode material for LIBs, PPTS delivers a high reversible specific capacity of 697.1 mAh g?1 at 0.1 A g?1 and good rate performance (335.4 mAh g?1 at 1 A g?1). Moreover, a reversible specific capacity of 205.2 mAh g?1 at 0.05 A g?1 could be obtained as an anode material for SIBs. |
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Keywords: | Multi carbonyl compound Organic electrode materials Linear polymer Lithium-ion batteries Sodium-ion batteries |
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