Next Article in Journal
Accuracy Analysis of DNN-Based Pose-Categorization Model and Activity-Decision Algorithm
Previous Article in Journal
Hot Blade Shape Reconstruction Considering Variable Stiffness and Unbalanced Load in a Steam Turbine
Open AccessArticle

Solvent-Dictated Sodium Sulfur Redox Reactions: Investigation of Carbonate and Ether Electrolytes

1
Xi’an Institute of Flexible Electronics (IFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi’an 710072, Shaanxi, China
2
Helmholtz Institute Ulm, Helmholtzstraße 11, 89081 Ulm, Germany
3
Karlsruhe Institute of Technology (KIT), D-76021 Karlsruhe, Germany
4
Institute of Surface Chemistry and Catalysis, Ulm University, Albert-Einstein-Allee 47, D-89081 Ulm, Germany
*
Author to whom correspondence should be addressed.
Energies 2020, 13(4), 836; https://doi.org/10.3390/en13040836
Received: 9 January 2020 / Revised: 3 February 2020 / Accepted: 12 February 2020 / Published: 14 February 2020
(This article belongs to the Special Issue Novel Technologies for Metal-Ion and Metal Batteries)
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. View Full-Text
Keywords: sodium-sulfur; redox kinetics; carbonate; ether; electrolyte sodium-sulfur; redox kinetics; carbonate; ether; electrolyte
Show Figures

Graphical abstract

MDPI and ACS Style

Zhang, H.; Diemant, T.; Qin, B.; Li, H.; Behm, R.J.; Passerini, S. Solvent-Dictated Sodium Sulfur Redox Reactions: Investigation of Carbonate and Ether Electrolytes. Energies 2020, 13, 836.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop