Correlation study of solid phase conversion sulfur electrode:Lithium sulfur batteries have become a new type of energy storage system with high theoretical energy density, extensive source of raw materials and low cost. Despite years of development, various novel structural sulfur composite positive electrode materials, various transition metals related chemical adsorption intermediate or electrochemical catalysts, such as rain, spring bamboo shoots, inhibit the notorous multi-sulfide shuttle, but lithium sulfur The practical progress of the battery is still very slow. A Xinping Professor I once found that only a large battery in the laboratory can only be used to cycle a few weeks or even can't charge and discharge. A Xinping Professor Team believes that from the perspective of thermodynamics, as long as the electrochemical mechanism of polysulfide in the lithium sulfur battery is present, the shuttle effect cannot be fundamentally inhibited. The utility process of lithium sulfur batteries can only be truly promoted by converting lithium sulfur battery electrochemical oxidation mechanisms to solid phase conversion mechanisms.
Fig. 2 is a schematic diagram of the inner SEI layer of sulfur particles in the surface of the sulfur particles in the carbonate-ether culechant electrolyte
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