Construction of CNTs@Fe2O3 Materials and Their Effects on the Performance of Lithium Sulfur Batteries
Lithium sulfur batteries, as a new type of lithium battery, have advantages of high energy density and low cost, but the performance degradation of sulfur positive electrodes during cycling is still a problem to be solved. To this end, an Fe2O3 modified carbon nanotubes (CNTs@Fe2O3) were prepared as a sulfur carrier. The unique hol-low structure of carbon nanotubes can effectively cope with the volume expansion effect, while the Fe2O3 particles grown on the surface of carbon nanotubes can effectively adsorb lithium polysulfide and thus inhibit lithium polysul-fide shuttling, and the long-range conductive structure of the carbon nanotubes can improve the electrical conduc-tivity of the positive electrode after the deposition of insoluble lithium polysulfide.
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