Volume 41, Issue 14 pp. 1691-1696
Concise Report

A Pyrazine-Based 2D Conductive Metal-Organic Framework for Efficient Lithium Storage

Xiaoxiao Sun

Xiaoxiao Sun

Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300072 China

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Xiaoli Yan

Corresponding Author

Xiaoli Yan

Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300072 China

E-mail: [email protected]; [email protected]; [email protected]Search for more papers by this author
Keming Song

Keming Song

College of Chemistry and Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan, 450001 China

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Ting Zhang

Ting Zhang

Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300072 China

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Zongfan Yang

Zongfan Yang

Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300072 China

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Xi Su

Xi Su

Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300072 China

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Weihua Chen

Corresponding Author

Weihua Chen

College of Chemistry and Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan, 450001 China

E-mail: [email protected]; [email protected]; [email protected]Search for more papers by this author
Long Chen

Corresponding Author

Long Chen

Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Tianjin University, Tianjin, 300072 China

State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012 China

E-mail: [email protected]; [email protected]; [email protected]Search for more papers by this author
First published: 27 February 2023
Citations: 10

Dedicated to the Special Issue of Optoelectronic Functional Materials.

Comprehensive Summary

The merits of intrinsic electrical conductivity, high specific surface area, tunable chemical composition and tailor-made properties enable two-dimensional conductive metal-organic frameworks (2D c-MOFs) as promising next-generation electrode materials in the field of energy storage and conversion. Herein, we have designed and synthesized a novel pyrazine-based 2D c-MOF (TPQG-Cu-MOF) bearing extended π-conjugated structure and abundant redox active sites. Thanks to the excellent redox reversibility of pyrazine units and CuO2 units, as well as the insolubility of the rigid framework skeleton, TPQG-Cu-MOF as the cathode material of lithium-ion battery exhibits a reversible specific capacity (150.2 mAh·g–1 at 20 mAh·g–1), good cycling stability (capacity retention of 82.6% after 500 cycles at 1 A·g–1) and excellent rate performance. Comprehensive ex-situ spectroscopic studies revealed the reversible redox activity of pyrazine units and CuO2 units of TPQG-Cu-MOF during the Li+ insertion/extraction process. The deepening fundamental understanding of the structure-property relationship was proposed, which might pave the way for further development of efficient MOF-based energy storage devices.image

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