A mixed conductive coating layer composed of lithium ion conductive ceramic powder, carbon and binder was introduced on the surface of a sulfur electrode. This coating layer is designed to suppress the migration of lithium polysulfides from the sulfur electrode, and improve the cycling capacity of a lithium sulfur battery. The protected sulfur cathode with a mixed conductive coating layer delivered an initial specific capacity of 1236 mAh g−1 at 0.5C and maintained a capacity of 842 mAh g−1 after 100 cycles. In particular, a soft package battery with protected cathode exhibits improved cycling capacity and excellent rate performance.
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Acknowledgements
This work is financially supported by the Natural Science Foundation of China No. 51402330, No. 51372262, No. 51472261; the high-resolution earth observation system major special project youth innovation foundation of China.
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Jin, J., Wen, Z., Wang, Q. et al. Protected Sulfur Cathode with Mixed Conductive Coating Layer for Lithium Sulfur Battery. JOM 68, 2601–2606 (2016). https://doi.org/10.1007/s11837-016-2062-3
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DOI: https://doi.org/10.1007/s11837-016-2062-3