Highly Reversible Lithium Polysulfide Semiliquid Battery with Nitrogen-Rich Carbon Fiber Electrodes

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Journal Article
Energy Technology, 2018, 6 (2), pp. 251 - 256
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© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Freestanding nitrogen-doped carbon fiber (NCF) webs saturated with lithium polysulfide solution were prepared as semiliquid cathodes for lithium–sulfur batteries. The NCF webs not only facilitated the transportation of electrons and ions but also immobilized the polysulfide at the cathode side because of strong affinity between the polysulfide and the N-doped carbon. As a result, these semiliquid cells demonstrated superior electrochemical performance at various current loads. A high reversible capacity of 900 mAh g −1 was achieved after 200 cycles at a current rate of 1 C.
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