A Redox-Active 2D Metal-Organic Framework for Efficient Lithium Storage with Extraordinary High Capacity
Journal Article
·
· Angewandte Chemie (International Edition)
- Tianjin Univ., Tianjin (China). Dept. of Chemistry, Inst. of Molecular Plus, Tianjin Key Lab. of Molecular Optoelectronic Science
- Tianjin Univ., Tianjin (China). School of Materials Science and Engineering, Key Lab. of Advanced Ceramics and Machining Technology Tianjin Key Lab. of Composite and Functional Materials
- Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Chemistry
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072 China
Metal–organic framework cathodes usually exhibit low capacity and poor electrochemical performance for Li-ion storage owing to intrinsic low conductivity and inferior redox activity. Now a redox-active 2D copper–benzoquinoid (Cu-THQ) MOF has been synthesized by a simple solvothermal method. The abundant porosity and intrinsic redox character endow the 2D Cu-THQ MOF with promising electrochemical activity. Superior performance is achieved as a Li-ion battery cathode with a high reversible capacity (387 mA h g-1), large specific energy density (775 Wh kg-1), and good cycling stability. The reaction mechanism is unveiled by comprehensive spectroscopic techniques: a three-electron redox reaction per coordination unit and one-electron redox reaction per copper ion mechanism is demonstrated. This elucidatory understanding sheds new light on future rational design of high-performance MOF-based cathode materials for efficient energy storage and conversion.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1597261
- Alternate ID(s):
- OSTI ID: 1689989
- Report Number(s):
- BNL--213603-2020-JAAM
- Journal Information:
- Angewandte Chemie (International Edition), Journal Name: Angewandte Chemie (International Edition) Vol. 59; ISSN 1433-7851
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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