文章基本信息

标题：A room-temperature sodium rechargeable battery using an SO2-based nonflammable inorganic liquid catholyte
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作者：Goojin Jeong ; Hansu Kim ; Hyo Sug Lee 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
期号：1
DOI：10.1038/srep12827
语种：English
出版社：Springer Nature
摘要：Sodium rechargeable batteries can be excellent alternatives to replace lithium rechargeable ones because of the high abundance and low cost of sodium; however, there is a need to further improve the battery performance, cost-effectiveness, and safety for practical use. Here we demonstrate a new type of room-temperature and high-energy density sodium rechargeable battery using an SO₂-based inorganic molten complex catholyte, which showed a discharge capacity of 153 mAh g^{− 1} based on the mass of catholyte and carbon electrode with an operating voltage of 3 V, good rate capability and excellent cycle performance over 300 cycles. In particular, non-flammability and intrinsic self-regeneration mechanism of the inorganic liquid electrolyte presented here can accelerate the realization of commercialized Na rechargeable battery system with outstanding reliability. Given that high performance and unique properties of Na–SO₂ rechargeable battery, it can be another promising candidate for next generation energy storage system.