Sodium storage in triazine-based molecular organic electrodes: The importance of hydroxyl substituents

Yilin Shan; Yanyan He; Yanqing Gu; Yangyunli Sun; Na Yang; Hao Jiang; Fei Wang; Chunzhong Li; De en Jiang; Honglai Liu; Xiang Zhu; Sheng Dai

doi:10.1016/j.cej.2021.133055

Sodium storage in triazine-based molecular organic electrodes: The importance of hydroxyl substituents

Yilin Shan, Yanyan He, Yanqing Gu, Yangyunli Sun, Na Yang, Hao Jiang, Fei Wang, Chunzhong Li, De en Jiang, Honglai Liu, Xiang Zhu, Sheng Dai

Chemical Sciences Division

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Rational design and synthesis of novel organic electrodes have captured growing attention for the development of sustainable sodium ion batteries (SIBs), but the battery performance has been significantly limited by poor reversible specific capacity and cycling ability. Here, we report a simple structural modulation approach for creating a new type of triazine compounds as anode materials displaying superior SIB performance. We find that trihydroxyphenyl functionalities conjugated with the triazine ring enhance electrochemical affinities for Na-ion trapping, thereby promoting reversible Na-ion insertion/deinsertion. The resultant trihydroxyl-modulated triazine-based anode exhibits an exceptional battery capacity, reaching as high as 650 mAh g⁻¹ at a current density of 0.1 A g⁻¹ and ranks at the top among all reported molecular SIB electrodes. The simple modulation approach not only enables us to achieve exceptional sodium storage but simultaneously provides a means to extends our understanding of structure–property relationship and facilitate new possibilities for organic SIBs.

Original language	English
Article number	133055
Journal	Chemical Engineering Journal
Volume	430
DOIs	https://doi.org/10.1016/j.cej.2021.133055
State	Published - Feb 15 2022

Funding

X.Z. thanks the financial supports from National Program for Young Talents of China, Foundation research project of Jiangsu Province ( Y91266JZQ1 ), National Natural Science Foundation of China ( E00966GZQ2 and E00966GMS1 ). The research was also supported financially by the National Natural Science Foundation of China ( 51621002 , 91834301 ), and the National Program for Support of Top-Notch Young Professionals. Y.S. and D.J. (DFT modeling) were supported by the Fluid Interface Reactions, Structures, and Transport (FIRST) Center, an Energy Frontier Research Center funded by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences. S.D. (discussion of the results) was supported by U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division.

Keywords

Hydroxyl substitution
Molecular electrodes
Sodium-ion batteries
Structural modulation
Triazine compounds

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title = "Sodium storage in triazine-based molecular organic electrodes: The importance of hydroxyl substituents",

abstract = "Rational design and synthesis of novel organic electrodes have captured growing attention for the development of sustainable sodium ion batteries (SIBs), but the battery performance has been significantly limited by poor reversible specific capacity and cycling ability. Here, we report a simple structural modulation approach for creating a new type of triazine compounds as anode materials displaying superior SIB performance. We find that trihydroxyphenyl functionalities conjugated with the triazine ring enhance electrochemical affinities for Na-ion trapping, thereby promoting reversible Na-ion insertion/deinsertion. The resultant trihydroxyl-modulated triazine-based anode exhibits an exceptional battery capacity, reaching as high as 650 mAh g−1 at a current density of 0.1 A g−1 and ranks at the top among all reported molecular SIB electrodes. The simple modulation approach not only enables us to achieve exceptional sodium storage but simultaneously provides a means to extends our understanding of structure–property relationship and facilitate new possibilities for organic SIBs.",

keywords = "Hydroxyl substitution, Molecular electrodes, Sodium-ion batteries, Structural modulation, Triazine compounds",

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AU - Shan, Yilin

AU - He, Yanyan

AU - Gu, Yanqing

AU - Sun, Yangyunli

AU - Yang, Na

AU - Jiang, Hao

AU - Wang, Fei

AU - Li, Chunzhong

AU - Jiang, De en

AU - Liu, Honglai

AU - Zhu, Xiang

AU - Dai, Sheng

PY - 2022/2/15

Y1 - 2022/2/15

N2 - Rational design and synthesis of novel organic electrodes have captured growing attention for the development of sustainable sodium ion batteries (SIBs), but the battery performance has been significantly limited by poor reversible specific capacity and cycling ability. Here, we report a simple structural modulation approach for creating a new type of triazine compounds as anode materials displaying superior SIB performance. We find that trihydroxyphenyl functionalities conjugated with the triazine ring enhance electrochemical affinities for Na-ion trapping, thereby promoting reversible Na-ion insertion/deinsertion. The resultant trihydroxyl-modulated triazine-based anode exhibits an exceptional battery capacity, reaching as high as 650 mAh g−1 at a current density of 0.1 A g−1 and ranks at the top among all reported molecular SIB electrodes. The simple modulation approach not only enables us to achieve exceptional sodium storage but simultaneously provides a means to extends our understanding of structure–property relationship and facilitate new possibilities for organic SIBs.

AB - Rational design and synthesis of novel organic electrodes have captured growing attention for the development of sustainable sodium ion batteries (SIBs), but the battery performance has been significantly limited by poor reversible specific capacity and cycling ability. Here, we report a simple structural modulation approach for creating a new type of triazine compounds as anode materials displaying superior SIB performance. We find that trihydroxyphenyl functionalities conjugated with the triazine ring enhance electrochemical affinities for Na-ion trapping, thereby promoting reversible Na-ion insertion/deinsertion. The resultant trihydroxyl-modulated triazine-based anode exhibits an exceptional battery capacity, reaching as high as 650 mAh g−1 at a current density of 0.1 A g−1 and ranks at the top among all reported molecular SIB electrodes. The simple modulation approach not only enables us to achieve exceptional sodium storage but simultaneously provides a means to extends our understanding of structure–property relationship and facilitate new possibilities for organic SIBs.

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Sodium storage in triazine-based molecular organic electrodes: The importance of hydroxyl substituents

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