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Electroactive polylactic acid nanofiber multilayer membranes as "Green" flexible electrode for supercapacitor
Yashi Chen1, Danlian Huang2, Lei Liu3
1Center for Computational Chemistry, Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing, College of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430200, China; College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China.
Discarded polylactic acid (PLA) masks are repurposed into advanced nanofiber membranes for flexible supercapacitors. This innovative recycling approach enhances energy storage while demonstrating environmental safety for plant growth.
Area of Science:
- Materials Science
- Electrochemistry
- Environmental Science
Background:
- Increased mask usage post-COVID-19 presents significant disposal challenges.
- Lack of effective recycling mechanisms for discarded masks, particularly polylactic acid (PLA).
- Environmental pollution concerns arising from widespread mask waste.
Purpose of the Study:
- To develop a sustainable method for recycling discarded polylactic acid (PLA) masks.
- To synthesize novel nanofiber multilayer membranes for flexible supercapacitors.
- To evaluate the electrochemical performance and environmental impact of the recycled material.
Main Methods:
- Layer-by-layer self-assembly technique used to synthesize PLA/PDA/GO/PPy nanofiber multilayer membranes.
- Fabrication of flexible supercapacitors utilizing the synthesized membranes as electrodes.
- Electrochemical performance testing (capacitance, energy density) and assessment of material's effect on ryegrass and canola growth in soil.
Main Results:
- Optimized PLA/PDA/GO/PPy membranes achieved a high capacitance of 1331 mF cm⁻².
- Symmetric aqueous supercapacitors demonstrated superior energy density compared to existing literature.
- The recycled material showed no adverse effects on the growth of ryegrass and canola, indicating environmental friendliness.
Conclusions:
- Repurposing discarded PLA masks into PLA/PDA/GO/PPy membranes is a viable strategy for sustainable energy storage.
- The developed membranes offer remarkable electrochemical properties suitable for high-performance flexible supercapacitors.
- The material exhibits excellent environmental compatibility, making it a promising candidate for eco-friendly applications.
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