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- W2997663451 abstract "Abstract Conjugated carbonyl compounds have received much attention as cathode materials for developing green lithium‐ion batteries (LIBs). However, their high dissolution and poor electronic conductivity in organic electrolyte restrict their further application. Herein, a self‐polymerized nitro‐substituted conjugated carbonyl compound (2,7‐dinitropyrene‐4,5,9,10‐tetraone, PT‐2 NO 2 ) is applied as a high‐performance cathode material for LIBs. PT‐2 NO 2 exhibits a high reversible capacity of 153.9 mAh g −1 at 50 mA g −1 after 120 cycles, which is higher than that of other substituted compounds. Detailed characterization and theoretical calculations have testified that PT‐2 NO 2 is transformed into an azo polymer through an irreversible reductive coupling reaction in the first discharge process, and then carbonyl and azo groups reversibly react with Li ions in subsequent cycles. In addition, this azo polymer is also synthesized and applied as the electrode material, which shows similar electrochemical performance to PT‐2 NO 2 but with higher initial coulombic efficiency. Thus, this work provides a simple but effectively way to construct organic cathode materials with multiple redox sites for green and high‐performance LIBs." @default.
- W2997663451 created "2020-01-10" @default.
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- W2997663451 date "2020-01-30" @default.
- W2997663451 modified "2023-09-30" @default.
- W2997663451 title "A Self‐Polymerized Nitro‐Substituted Conjugated Carbonyl Compound as High‐Performance Cathode for Lithium‐Organic Batteries" @default.
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- W2997663451 doi "https://doi.org/10.1002/cssc.201903112" @default.
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