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Amino-Acid-Substituted Perylene Diimide as the Organic Cathode Materials for Lithium-Ion Batteries

One of the most effective cost reduction and green engineering projects is to introduce organic compounds to electrode materials instead of expensive inorganic-based materials. In this work, derivatives of perylene diimide substituted with amino acids (PDI_AAs) showed the characteristics of redox-ac...

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Bibliographic Details
Published in:Materials 2023-01, Vol.16 (2), p.839
Main Authors: Seong, Honggyu, Nam, Wonbin, Kim, Geongil, Moon, Joon Ha, Jin, Youngho, Kwon, Seung-Ryong, Lee, Joon-Hwa, Choi, Jaewon
Format: Article
Language:English
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Summary:One of the most effective cost reduction and green engineering projects is to introduce organic compounds to electrode materials instead of expensive inorganic-based materials. In this work, derivatives of perylene diimide substituted with amino acids (PDI_AAs) showed the characteristics of redox-active organic compounds and were, therefore, used as cathode materials of lithium-ion batteries (LIBs). Among the as-synthesized PDI_AAs, the L-alanine-substituted PDI (PDI_A) showed the most improved cycling performances of 86 mAhg over 150 cycles with retention of 95% at 50 mAg . Furthermore, at a high current density of 500 mAg , PDI_A exhibited a long-term cycling performance of 47 mAhg (retention to 98%) over 5000 cycles. In addition, ex situ attenuated total reflection Fourier-transform infrared spectroscopy (ATR FT-IR) analysis of electrodes at various charging states showed the mechanism of the charge-discharge process of PDI_A.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma16020839