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Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques
Published on: November 11, 2013
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Hypercrosslinked phenothiazine-based polymers as high redox potential organic cathode materials for lithium-ion
Ying Zhang1, Panpan Gao1, Xinya Guo1
1Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power Shanghai 200090 China yanghsh@shiep.edu.cn wangbaofeng@shiep.edu.cn.
RSC Advances
|May 2, 2022
Summary
New hypercrosslinked polymers offer sustainable organic cathode materials for lithium-ion batteries. These materials show high discharge potentials and excellent conductivity, overcoming limitations of traditional organic cathodes.
Area of Science:
- Materials Science
- Electrochemistry
- Polymer Chemistry
Background:
- Organic cathode materials are promising for sustainable rechargeable lithium-ion batteries.
- Key limitations include low redox potentials, poor electrical conductivity, and electrolyte dissolution.
Purpose of the Study:
- To develop novel insoluble organic cathode materials with improved electrochemical performance.
- To address the limitations of existing organic cathode materials for lithium-ion batteries.
Main Methods:
- Synthesis of two hypercrosslinked porous conductive polymers with phenothiazine motifs (HPEPT and HPPT).
- Electrochemical characterization to determine discharge potentials and rate capabilities.
Main Results:
- HPEPT and HPPT achieved high and stable discharge potentials (3.65 V and 3.48 V vs. Li/Li+).
- Materials exhibited good electrical conductivity and outstanding rate capabilities (up to 800 mA g-1).
- High mass loading (up to 70 wt%) was tolerated without significant performance loss.
Conclusions:
- Insoluble hypercrosslinked polymers with phenothiazine motifs are effective organic cathode materials.
- Prudent polymer design can overcome the limitations of traditional organic cathodes for advanced batteries.
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