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RSS FeedsEnergies, Vol. 13, Pages 836: Solvent-Dictated Sodium Sulfur Redox Reactions: Investigation of Carbonate and Ether Electrolytes (Energies)

 
 

14 february 2020 16:02:51

 
Energies, Vol. 13, Pages 836: Solvent-Dictated Sodium Sulfur Redox Reactions: Investigation of Carbonate and Ether Electrolytes (Energies)
 




Sulfur-based cathode chemistries are essential for the development of high energy density alkali-ion batteries. Here, we elucidate the redox kinetics of sulfur confined on carbon nanotubes, comparing its performance in ether-based and carbonate-based electrolytes at room temperature. The solvent is found to play a key role for the electrochemical reactivity of the sulfur cathode in sodium–sulfur (Na–S) batteries. Ether-based electrolytes contribute to a more complete reduction of sulfur and enable a higher electrochemical reversibility. On the other hand, an irreversible solution-phase reaction is observed in carbonate solvents. This study clearly reveals the solvent-dependent Na–S reaction pathways in room temperature Na–S batteries and provides an insight into realizing their high energy potential, via electrolyte formulation design.


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20 viewsCategory: Biophysics, Biotechnology, Physics
 
Energies, Vol. 13, Pages 839: Accuracy Analysis of DNN-Based Pose-Categorization Model and Activity-Decision Algorithm (Energies)
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