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A novel composite of sulfur immobilized into porous N-doped carbon microspheres (NCMSs-S) was synthesized. This composite cathode for lithium-sulfur batteries delivers a high specific capacity and superior rate capability and cycle stability, with a reversible capacity of ~605 mA h g(-1) at 2 C and 85% capacity retention after 500 cycles.
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Xu et al. (2014) studied this question.
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