Magnesium-sulfur batteries present a new developing technology of energy storage. While working with Mg-S cells we are faced with many challenges at the anode (passive film formation) and cathode (polysulfide shuttle effect, self-discharge) side. In this thesis we examined the influence of various additives into magnesium anode on the operation of the cell. The results show that the addition of salts MgBr2 and MgCl2 improve the system performance in the initial cycles. We also tested how concentration of the electrolyte effect the battery performance. We found that, by increasing the concentration of the electrolyte, stable capacities are greatly improved and at the same time the concentration also affects the shape of the discharge curve and the polysulfide shuttle effect. We also checked how the concentration of sulfur in the carbon-sulfur composite influences the operation of the battery. The test show that the increase in sulfur concentration greatly reduces both initial and established capacity of the system.
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