Due to its high energy density, safety and low cost compared to other battery systems, the secondary magnesium battery is an interesting candidate for future generations of electricity storage devices. The main challenges facing the development of the magnesium accumulator are the development of suitable electrolytes and cathode composite, which would enable the highest possible efficiency of the operation of magnesium in the sulfur accumulator. In my diploma thesis I studied the effect of boron nitride (BN), which was added to the sulfur electrode on the improvement of magnesium battery performance. The effect of BN additive on the composite sulfur cathode was tested to determine if the additive could affect the stability of operation. The measurement results show that the addition of BN to the sulfur composite electrode partially improves the specific discharge capacity and stability of the Mg-S battery operation and improves the reversibility of the sulfur electrode operation and reduces overvoltage.
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