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The short-term cycling properties of Na/PVdF/S battery at ambient temperature |
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| Authors: | Jong-Seon Kim Hyo-Jun Ahn Ic-Pyo Kim Ki-Won Kim Jou-Hyeon Ahn Cheol-Wan Park Ho-Suk Ryu |
| Institution: | 1. i-cube Center, Nano & Advanced Materials Engineering, Gyeongsang National University, 900 Gajwadong, Jinju, Gyeongnam, 660-701, Korea 2. Divsion of Chemical & Biological Engineering, Gyeongsang National University, 900 Gajwadong, Jinju, Gyeongnam, 660-701, Korea 3. SODIFF Advanced Materials Company, Yeongju, 750-080, Korea 4. ISEM, University of Wollongong, Wollongong, NSW, 2552, Australia |
| Abstract: | The Na/PVdF/S cells were composed of solid sodium, sulfur, and polyvinylidene fluoride–hexafluoropropene (PVdF) gel polymer electrolyte. The PVdF polymer electrolyte was prepared form tetraglyme plasticizer and NaCF3SO3 salt, and its electrochemical properties were studied using CV and impedance analysis. The interfacial resistance between sodium and polymer electrolyte increase with storage time, which might be associated with passivation layer. Solid-state sodium/sulfur cell using a PVdF gel polymer electrolyte has been tested. The Na/PVdF/S cell with 0.288 mA cm?2 shows a high discharge capacity of 392 mAh g?1 and 36 mAh g?1 after 20 cycles. The cycle performance of Na/GPE/S cell operating at 25 °C is worse than Na/S cell at a high temperature. |
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