Related Experiment Video
Updated: Jun 23, 2026
05:33
Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
22.1K
Cross-linking Effects on Performance Metrics of Phenazine-Based Polymer Cathodes
Cara N Gannett1, Brian M Peterson1, Luxi Shen1
1Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853-1301, USA.
Chemsuschem
|January 25, 2020
Summary
Researchers developed a high-power organic cathode for lithium-ion batteries using N,N'-diphenylphenazine. This material achieves high energy and power density, crucial for next-generation energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Improving power density in lithium-ion batteries requires cathodes supporting high charge-discharge rates.
- Current battery technologies face limitations in balancing energy density with power output.
Purpose of the Study:
- To develop high-power cathode materials for lithium-ion batteries that maintain high energy density.
- To explore the potential of N,N extprime-diphenylphenazine as a charge-storage center for advanced batteries.
Main Methods:
- Electrochemical studies to identify suitable charge-storage centers.
- Incorporation of phenazine redox units into a cross-linked network structure.
- Performance evaluation of the developed cathode material under various charge-discharge rates and cycling conditions.
Main Results:
- N,N extprime-diphenylphenazine demonstrated reversible, fast electron transfer at high potentials.
- The cross-linked phenazine-based material achieved a high capacity of 223 mA h g-1 at a high voltage of 3.45 V vs. Li/Li+.
- Optimized materials delivered 220 mA h g-1 at 120 C with over 1000 cycles, showing minimal degradation.
Conclusions:
- Amorphous organic materials exhibit fast ionic transport and excellent rate capabilities.
- The developed phenazine-based cathode shows significant potential for next-generation energy storage with high energy and power density.
