Preparation and electrochemical characterization of the porous sulfur cathode using a gelatin binder |
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Affiliation: | 1. Department of Material Science and Engineering, Beijing University of Chemical Technology, 15 BeiSanhuan East Road, Beijing 100029, China;2. Military Power Sources Research and Development Center, Chemical Defense Institute, 35 Huayuan North Road, Beijing 100083, China |
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Abstract: | A novel porous sulfur cathode in which a gelatin was used as the binder was prepared by using a freeze–drying method at −58 °C. The porous structure provides channels for electrolyte infiltration and then facilitates ion diffusion. This porous sulfur cathode has a high initial capacity of 1235 mAh g−1 and a high reversible capacity of 626 mAh g−1 after 50 cycles, both of which are higher than that of the normal cathodes with compact structures. |
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