Performance Improvement of Magnesium Sulfur Batteries with Modified Non‐Nucleophilic Electrolytes |
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Authors: | Zhirong Zhao‐Karger Xiangyu Zhao Di Wang Thomas Diemant R. Jürgen Behm Maximilian Fichtner |
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Affiliation: | 1. Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT);2. College of Materials Science and Engineering, Nanjing Tech University, Nanjing, China;3. Institute of Surface Chemistry and Catalysis, Ulm University, Ulm, Germany;4. Helmholtz Institute Ulm for Electrochemical Energy Storage (HIU), Ulm, Germany |
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Abstract: | The combination of a magnesium anode with a sulfur cathode is one of the most promising electrochemical couples because of its advantages of good safety, low cost, and a high theoretical energy density. However, magnesium sulfur batteries are still in a very early stage of research and development, and the discovery of suitable electrolytes is the key challenge for further improvement. Here, a new preparation method for non‐nucleophilic electrolyte solutions using a two‐step reaction in one‐pot is presented, which provides a feasible way to optimize the physiochemical properties of the electrolyte for the application in magnesium sulfur batteries. The first use of modified electrolytes in glymes and binary solvents of glyme and ionic liquid shows beneficial effects on the performance of magnesium sulfur batteries. New insights into the reaction mechanism of electrochemical conversion between magnesium and sulfur are also investigated. |
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Keywords: | magnesium batteries magnesium sulfur batteries non‐nucleophilic electrolytes reaction mechanisms |
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