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Non-Flammable fluorinated gel polymer electrolyte for safe lithium metal batteries in harsh environments.
J Colloid Interface Sci
December 2024
Jiangsu Key Laboratory of Materials and Technologies for Energy Storage, College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China.
Compared to liquid electrolytes, gel polymer electrolytes (GPEs) offer enhanced safety and represent an up-and-coming option for high-energy-density lithium metal batteries (LMBs). However, several challenges hindered the practical application of GPEs for LMBs, such as low ionic conductivity at room temperature, decomposition at high voltage, and poor interfacial compatibility with lithium anode. In this study, a non-flammable fluorinated GPE was synthesized using 2,2,2-trifluoroethyl acrylate (TFEA) and ethoxylated trimethylolpropane triacrylate (ETPTA) as precursor materials, with succinonitrile (SN) incorporated as a plasticizer and a dual-salt system of lithium bis(trifluoro-methane) sulfonimide and lithium difluoroxalate borate.
View Article and Find Full Text PDFA low-temperature-tolerant and non-flammable cellulose/HEC/PVA eutectogel for flexible asymmetric supercapacitors.
Int J Biol Macromol
December 2024
School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430073, PR China. Electronic address:
Asymmetric supercapacitors (ASCs), which combine the advantages of electric double-layer capacitors and pseudocapacitors, have attracted more and more research interest. However, the performance of water-based ASCs often faces the challenge of electrolyte freezing at low temperatures. To resolve the problem, a ternary deep eutectic solvent (DES) with an eutectic point of less than -100 °C was first prepared.
View Article and Find Full Text PDFCocklebur-Inspired Robust Non-flammable Polymer Thermo Conductor for CPU Cooling.
Small
December 2024
School of Materials Science and Engineering, Tongji University, Shanghai, 201804, P. R. China.
Article Synopsis
- Polymers used for CPU heat dissipation need to balance high thermal conductivity with mechanical strength, but existing high-conductivity polymers face issues like high costs and flammability.
- Researchers developed cast polyurethane composites mimicking the structure of cocklebur, using copper compounds and alumina microspheres to improve properties and prevent flammability.
- The resulting composites show strong performance with a tensile strength of 15.9 MPa and thermal conductivity of 2.51 W m⁻¹ K⁻¹, positioning them as viable and sustainable solutions for cooling in advanced electronics and new energy uses.
Natural Low-Melting Mixture Solvents for Green Recovery of Spent All-Solid-State Sodium-Ion Batteries with Superior Efficiency over Lithium-Ion Batteries.
ChemSusChem
December 2024
Department of Chemistry and Material Science, Langfang Normal University, Langfang, 065000, Hebei, China.
Article Synopsis
- * A new green recovery strategy is proposed using natural low-melting mixture solvents (LoMMSs) that are safe, cost-effective, biodegradable, and highly efficient for extracting metals from ASIBs.
- * This method achieves nearly 100% extraction of sodium with high selectivity and allows for cost-effective metal precipitation using water, making it more energy-efficient than traditional lithium-ion battery recycling.
An improved N-N dimethylacetamide-based non-flammable molecular crowding electrolyte using NaOTf for cobalt-based prussian blue//hard carbon aqueous solution battery.
J Colloid Interface Sci
January 2025
National Engineering Research Center for Marine Aquaculture, Institute of Innovation & Application, Zhejiang Ocean University, Zhoushan, Zhejiang 316022, China. Electronic address:
Aqueous sodium-ion batteries (ASIBs) are promising for large-scale electrical energy storage (LSEES) applications due to their cost and safety advantages. However, the low voltage stabilization window of water (∼1.23 V) and the lack of cathode with high specific capacity and long cycle life have limited their development.
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